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Monitoring agricultural fields with satellite images

Satellite data analysis remote sensing earth observation Monitoring agricultural fields
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How we helped:

Machine Learning and Data Fusion for crop-type monitoring. By building a likelihood model based on timing of the main crop harvest, the timing of parcel tillage after the main harvest and the field greenness in the September period to monitor the presence of catch crops.

Project highlights:

Building a national operating system for deriving agricultural parameters based on time series of both SAR and optical satellite data

Development of a user friendly web viewer for visualizing data and results allowing the user to search for specific field parcels and associated attribute information

Analysing time series based on advanced Machine Learning methods and data fusion for crop monitoring and likelihood model for monitoring of harvest and catch crops

In more detail..

The Danish Agricultural Agency is today performing control visits to field parcels across the entire country, to check if farmers report correctly on their crop types and farm management practices related to the CAP.

This line of work constitutes a significant work load and involves many field visits. The Danish Agricultural Agency needed a solution to check if farmers were reporting correctly in accordance with CAP requirements while at the same time reducing the amount of time spent on control visits.

All satellite data and results were presented on a web viewer developed to meet the client’s needs for assessing the satellite-derived information to be used in their CAP monitoring.

In short, we provided the Danish Agricultural Agency with:

  • Crop classification of more than 18 different crop types
  • Catch crop monitoring
  • Detection of timing of harvest and grass tillage
  • Detection of timing of ploughing
  • Maize field monitoring

Danish Agricultural Agency:

The staff of the Danish Agricultural Agency, a total of approximately 1,200, strives countrywide to create the optimal conditions for sustainable growth and green transformation in the fields of Agriculture and Plants and horticulture.

They administer and provide grants for agricultural production, environmental and ecosystem improvements, development programmes, grants for minor projects, and administer subsidies for certain types of export.

Monitoring agricultural fields

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

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Project Archive

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Our project references:

Since 2000, GRAS has successfully completed more than 200 projects in more than 75 countries. Below is a list of selected GRAS activities over the years.

2015

2014

2013

2012

2011

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2009

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2006

2005

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2000

2015

Iceberg detection based on Sentinel-1 data (2015)
With the launch of Sentinel-1 in 2014 new possibilities for mapping small scale objects in the Polar Regions has emerged. DHI GRAS has assisted the Danish Meteorological Institute in developing and implementing new routines to utilize these new SAR based possibilities and improve iceberg detection in the Arctic Region.

2014

Innovation Technologies and Applications for Coastal Archaeological sites – ITACA, (2014-2016)
With a number of European partners DHI GRAS was part of the EU FP7 project ITACA. The project aimed to develop a management system for underwater archaeological sites in coastal regions. The monitoring service used innovative satellite remote sensing techniques combined with novel image processing algorithms. In the project DHI GRAS refined methods for bathymetry retrieval from optical data, assisting in data fusion and shape detection method development and application.

 

Assisting indigenous people in Latin America with Forest Monitoring (2014)
Together with the environmental organisation Forests of the World, DHI GRAS introduced satellite based tools for monitoring of forest areas in the indigenous’ peoples territory of Monte Verde, Bolivia. Based upon the access to open source tools and data as well as a tailor-made workshop on site in Bolivia, DHI GRAS facilitated an effective, systematic and routinely monitoring of deforestation in the territory.

Assisting mining company in NW-Australia – Sediment Mapping (2014)
DHI GRAS assisted a mining company in NW-Australia in quantifying and mapping sedimentation dynamics and sources in order to minimize any risks of the mining activities affecting the surrounding environment. The task involved water quality analysis and tidal effect modelling on flow patterns.

Quantifying urban and coastal changes in Vietnam – demonstrating the value of Earth Observation towards the Asian Development Bank (2014-2015)
In collaboration with our partner GeoVille, DHI GRAS was selected to conduct an ESA funded project serving the purpose of demonstrating the value of using Earth Observation data for an Asian Development Bank project in the coastal cities Dong Hoi and Hoi An, Vietnam. The project demonstrated how EO data can be used to successfully map and quantify changes in the urban areas, coastal morphology and bathymetry, as well as coastal habitats and vegetation covering, based on time series of satellite data spanning across 15 years.

2013

Supporting European Environmental Agency (EEA) with GIS and Image processing (2013-2017)
DHI GRAS entered into a framework agreement with the European Environmental Agency (EEA) on consultancy services within Geospatial Information Systems and advanced image processing. The contract covered support and consultancy with respect to advanced image analysis as well as automation of tasks related to administering and quality assuring Copernicus services and in particular GIO Land products. 

Using satellite imagery for topographic & baseline thematic mapping in Greenland (2013)
In this study DHI GRAS evaluated the feasibility of using the high information content in very high resolution satellite imagery as input for maintaining and updating topographic and baseline thematic maps in Greenland.

Applied Remote Sensing Training for Water Resources Management (2013)
The training course in applied remote sensing for hydrological characterization and flood mapping in West Africa was prepared and conducted by DHI GRAS at the AGRHYMET Regional Centre in Niger.

Mapping agricultural land use in West Africa (2013-2014)
In this research project led by the Department of Geosciences and Natural Resource Management, DHI GRAS delivered historic land use and crop type mapping in support of activities related to sustainable food production through irrigated intensive farming systems in West Africa.

Suspended Sediment Mapping, Australia (2013 – 2015) 
DHI GRAS delivered satellite based mapping of suspended sediment in near real-time in support for dredging activities during large infrastructure installments for the Oil & Gas industry in Australia. The information was made available to the client through a secure web based GIS system to allow easy access for all project partners. The system made it possible to define and monitor the sediment spill levels during the construction works and to separate the effect of the marine construction works from the naturally occurring sedimentation occurrence in the area.

AQUA-USERS – AQUAculture USEr driven operational Remote Sensing information services (2013-2016)
With a number of European partners, DHI GRAS was part of the EU FP7 project AQUA-USERS. The project was highly user driven and aimed to integrate satellite information on optical water quality and temperature into services to provide user-relevant and timely information for the aquaculture industry.
The outcome of the project consisted of an application to support aquaculture farmers in decision making.

Coral reef mapping – Malaysia (2013)
Together with DHI Malaysia and with the use of World View 2 imagery and advanced image analysis, DHI GRAS mapped the extent and quality of coral reefs in area in Malaysia. The image analysis complimented with dive observations in order to calibrate and validate the mapping. The maps are input in the establishment of an EIA for the construction of a container terminal.

2012

TIGER-NET – Earth Observation for Management of Water Resources in Africa (2012-2015)
A consortium led by GeoVille and GRAS was selected to carry out a project for the European Space Agency (ESA) in the frame of the TIGER initiative. The high level objectives of the TIGER-NET was to enhance the capacity of African water authorities by developing a water observation and information system (WOIS) for monitoring, assessing and inventorying water resources in a cost-effective manner by exploiting the wealth of information that can be extracted from earth observation data.

Mapping for Oil & Gas exploration – Western Africa (2012-13)
As input for an exploration project for an international Oil & Gas company, DHI GRAS conducted a detailed Land Cover and Land Use mapping. The mapping involved detailed mapping of settlements and existing infrastructure, as well as mapping of mangroves and other vegetation areas. The maps have been used as input in detailed planning of large scale seismic acquisition survey, complimenting existing field observations as well as input in an EIA and for HSE purposes.

Administration Tool for Freshwater Monitoring, Denmark (2012 – 2014)
With the aim of optimizing the monitoring capabilities of freshwater inland waters, DHI GRAS developed methods for water quality retrieval based on high and very high resolution satellite data as part of a project for the Danish Ministry of Environment.

Marine habitat mapping – Australia (2012-13)
With the use of very high resolution imagery and object based image analysis, DHI GRAS together with DHI and local partners mapped the existence of various marine habitats. The detailed mapping included mapping of sea grass, macroalgae and corals. The map was used as input for ecological modeling performed by DHI.

Suspended sediment mapping, Indonesia (2012-2013)
DHI GRAS delivered satellite based mapping of suspended sediment for validation of sediment transport models and for documentation on the variability of sediment plumes coming out of a number of estuaries in the country. Two images per day were processed for analysis of specific events and composite maps were generated for comparison of seasonal statistics.

Bathymetry for underwater archaeological sites (2012)
For sites in Denmark and Greece, DHI GRAS is using WorldView-2 satellite images to map bathymetry of coastal regions with the objective of supporting archaeological investigations. In addition, preliminary habitat and substrate maps have been generated.

Mapping baseline conditions of suspended sediments – Brunei, Malaysia (2012)
Based on MODIS imagery, DHI GRAS has mapped the suspended sediments in various areas of Brunei and Malaysia. DHI GRAS has processed daily maps of Total Suspended Sediments for a time period of 3 years, in order to allow for identification of spatial and temporal variations.

Mapping national forest cover for reporting under Kyoto Protocol – Denmark (2012)
In close collaboration with the Department of Forest & Landscape at the University of Copenhagen, DHI GRAS mapped the forest cover of Denmark for 2012. The map provided important information for the Danish reporting to the Kyoto Protocol of the United Nations Framework Convention on Climate Change (UNFCCC). A classification-tree approach was used for the mapping, based on Landsat TM and ETM+ satellite data with a spatial resolution of 30 m. Images from summer 2010 and spring 2011 were used to include phenological changes into the analysis to achieve an increased accuracy.

2011

Mapping environmental impacts of hydro power in Laos (2011-2013)
In this project GRAS, together with DHI and Earth Systems Lao, was selected to produce, deliver and assess the utility and benefits of EO information products and services in support of the Nam Theun II (NT2) Hydropower project in Lao PDR. Deliverables included among others land use and land cover change maps, road impact assessment, changes in river morphology, and monitoring of reservoir dynamics. The project is part of the European Space Agency (ESA) strategy to mainstream the use of EO-based services within the European Investment Bank (EIB) financing and project operations.

Detailed urban mapping – Sweden (2011-2012)
DHI GRAS has mapped impervious surface areas in several cities throughout Sweden. The mapping is based on a variety of available input data such as aerial photos, GIS data and LiDAR data. The mapping is performed with a highly automated mapping solution developed by DHI GRAS. The output is shape files with impervious surfaces classified into various classes specified by the client. The mapping results were used as input in a research project about estimation of surface runoff coefficients for hydrological modeling.

Training in satellite remote sensing in support of UN-REDD – Cambodia (2011-2012)
DHI GRAS trained the GIS/Remote Sensing unit of the Forestry Administration (FA) in Cambodia in using satellite remote sensing in support of UN-REDD projects. Implementation of policies to “Reducing emissions from deforestation and forest degradation” (REDD) requires effective monitoring systems to estimate the size and changes in carbon pools at national and sub-national levels. Satellite remote sensing plays an important role in providing robust, transparent, replicable and long-term spatial information needed for REDD.

CoBiOS – Coastal Biomass Observatory Services (2011-13)
With a number of European partners, DHI GRAS was part of the EU FP7 project CoBiOS. The CoBiOS project aimed to integrate satellite products and ecological models into an operational and user-relevant information service on high biomass blooms in Europe’s coastal waters.

Mapping Bathymetry along coast of Sicily (2011)
The new enhanced capacities of Worldview-2 were explored in this project where the bathymetry and seabed vegetation distribution were mapped for an area located on the coast of Sicily, Italy.

Suspended Sediment Mapping, Singapore (2011 – 2015)
DHI GRAS delivered satellite based mapping of suspended sediment in near real-time for a suite of users located in the Singapore area. The service was part of environmental monitoring programs in the area and it was a continuation of a service initiated in 2007. The continuation proved the high level of usability of the derived information, the cost-effectiveness of the solution and the high stability of the DHI GRAS service delivery.

Environmental mapping in an active Oil & Gas field – Kazakhstan (2011-12)
With the use of RapidEye and Ikonos imagery and advanced object based image analysis, DHI GRAS mapped the land cover and land use in an active Oil & Gas field in Kazakhstan. Complimented with field observations, vegetation, salt marsh and anthropogenic linked land use has been mapped. To detect changes and progress, DHI GRAS updated the mapping based on recent image acquisition.

2010

Environmental monitoring of Danish lakes (2010-12)
In this project DHI GRAS developed methods for chlorophyll a mapping in Danish lakes. The mapping combined traditional low resolution monitoring for large lakes but also focused on the potential for chlorophyll a mapping based on the WorldView-2 images in 2 m resolution.

Mapping glacial lake outbursts in Greenland (2010)
In this research project funded by the “Commission for Scientific Research in Greenland”, DHI GRAS and ASIAQ developed a remote sensing method to locate ice-dammed lakes and determined the volume of water discharged by a glacial lake outburst.

Topographic features mapped in West Greenland (2010)
DHI GRAS performed Class 1 topographic vector mapping of an airport in Eastern Greenland based on automatic feature extraction of objects in very high resolution satellite images.

GIS assistance to large scale health survey at Sri Lanka (2010-2011)
DHI GRAS developed and assisted South Asian Clinical Toxicology Research Collaboration (SACTRC) with a setup of a handheld-GIS based system to collect large scale health survey data in the field. The system was developed and implemented by local capacity building through workshops and training.

Cambodia 2010 (2010)
DHI GRAS was selected to provide independent quality assurance and verification of the 2010 national forest cover assessment in Cambodia.

Silkeborg Invasive species (2010)
Detailed distribution maps of Giant Hogweed (Heracleum mantegazzianum) and Common Broom (Cytisus scoparius) were produced from Worldview-2 imagery in support of combating these invasive species in the municipality of Silkeborg, Denmark. The project was carried out in association with NIRAS.

SADC Regional Groundwater Vulnerability Mapping (2010 – 2011)
With GEUS (Geological Survey of Denmark and Greenland) and CSIR ( Council for Scientific and Industrial Research , South Africa) , DHI GRAS developed a GIS-tool for integrated mapping and management of groundwater drought vulnerability and insecurity in the SADC ( South African Developing Countries) region.

Mapping of thermal plumes and sea ice in the Baltic Sea (2010)
Based on historic time series of thermal Landsat data, thermal plumes in relation to the release of cooling water from a power plant was mapped. The potential effect on the seasonal sea ice coverage was mapped based on various radar/SAR image sources, such as Envisat ASAR and ERS-2.

2009

Routinely monitoring of snow covers in the Himalayas (2009 – 2015)
Together with DHI in India and Denmark, DHI GRAS successfully developed and implemented a monitoring system quantifying the amount of snow masses for hydrological catchments managed by Bhakra Beas Management Board, India. The automatically mapping of snow cover allowed BBMB to effectively assess the amount of current water resources available for generating hydro power and supplying water downstream, as well as quantifying inter annual and annual variations. The snow cover monitoring tool served as input into the Real Time Decision Support System that DHI, based on ‘Mike powered by DHI’ technology, has developed and implemented, in order to allow BBMB to monitor the water resources combining gauge measurements and hydrological models.

Vegetation and snow mapping in West Greenland (2009)
DHI GRAS performed vegetation and snow mapping in an area located between the Maniitsoq Ice Cap and Godthåbsfjorden in Western Greenland for use in the preparation of a Strategic Environmental Assessment (SEA) for the construction of an aluminum smelter and related hydroelectric plant.

Mapping coastal changes in Bangladesh (2009)
DHI GRAS investigated the potential of Earth Observation (EO) data and methodologies for coastal change mapping in Bangladesh. The project was part of the “Exploitation of Earth Observations services in support of Environmental Impact Assessment (EIA) under the ESA EOMD program (European Space Agency’s programme on Earth Observation Market Development).

Feasibility of resources for sustainable energy in Mali (2009-2011)
Based on an initial phase of the mapping of renewable energy resources in Mali, DHI GRAS together with the University of Copenhagen and Risø National Laboratory, Technical University of Denmark, lead the further investigations of mapping the potentials for sustainable energy in Mali. DHI GRAS was leading project components related to mapping biofuel and solar energy potentials in close cooperation with local counterparts in Mali.

Mapping of turbidity and suspended solids in Australia (2009)
DHI GRAS mapped the amount of total suspended sediment in the waters around a selected region in Australia. The mapping was based on daily MODIS 250m images and calibration was performed on local in situ measurements. The sediment maps gave an overview of the temporal and spatial variations of the suspended sediments for the selected time period.

Mapping of coastal changes (2009)
DHI GRAS performed coastline mapping on several locations around the globe. Based on time series of different image sources (Aerial photos, QuickBird, World View, Landsat etc.), we mapped the coastline at different times and thereby quantified the dynamics related to the location of the coastline at the study sites. 

2008

Snow cover mapping for reservoir optimisation (2008-2011)
DHI GRAS mapped the snow cover and surface temperatures for assimilation into snow melt models with the purpose of optimising hydropower operations in Northern India. The data processing was based on daily images of snow cover, temperature and snow albedo and these input layers were used to calibrate the modeled output. The processing was developed to run in near-real time for assimilation into the snow melt model in a dedicated application for decision support.

Fehmarnbelt Link – EIA (2008 – 2012 )
DHI GRAS was part of the environmental impact assessment (EIA) project related to the future construction of the Fehmarnbelt link connecting Denmark and Germany. DHI GRAS delivered remote sensing based input to the hydrographic models and performed marine habitat mapping in collaboration with marine biologists and geologists. Furthermore, DHI GRAS was involved in studies focusing on quantifying and modelling the transport of suspended sediments.

Impervious area mapping (2008)
DHI GRAS mapped the impervious surfaces in various locations in Sweden and Bulgaria based on aerial photographs and QuickBird images. The data was used as input for hydrological modelling to model the increased runoff from impervious areas, and also to assess the effects on water quality. 

Mapping of invasive species (2008)
With NIRAS, DHI GRAS mapped various invasive species based on Very High Resolution satellite images. This service has been operational since 2006 and is performed for various municipalities in Denmark.

Kolombangara Forest Plantations (2008)
In this ESA project related to Earth Observation Market Development and managed by LuxSpace, DHI GRAS was chosen as the service provider for a demonstration project related to forest plantation mapping in the Solomon Islands. The project included mapping changes in plantation types over time.

Cambodia – monitoring of deforestation (2008)
DHI GRAS assisted the Forestry Administration of Cambodia in developing methods for deforestation monitoring of concession areas, related to REDD (Reducing Emissions from Deforestation in Developing Countries)

Mapping of irrigated areas in Iraq (2008)
DHI GRAS mapped historic changes in irrigated areas in the Basra province in order to identify the impact of wars on the agricultural productivity since the 1970s. Training of Iraqi officials in the use of remote sensing and GIS was also provided.

Hyacints (2008-2012)
The project Hydrological Modelling for Assessing Climate Change Impacts at different Scales (HYACINTS) developed new methodologies and tools to enable easier and more accurate use of regional scale climate and hydrological models to address local scale water resources problems. DHI GRAS contributed with a PhD on remote sensing of precipitation, with special focus on mountainous areas. More info at www.hyacints.dk

2007

Near-real-time sediment mapping (2007 – 2011):
DHI GRAS entered a long term agreement on sediment monitoring in South East Asia based on MODIS 250 m. data. DHI GRAS operated two processing systems which generated maps of total suspended matter in near-real-time with daily data deliverance. The data was continuously calibrated with automated in-situ measurements.

Mangrove Information Management System (2007-2009)
DHI GRAS developed a Mangrove Information Management System with several local organisation. The aim of the project was to identify vulnerable areas and map risks with respect to sea level rise and extreme climate events in Northern Vietnam.

Integrated Coastal Zone Management Plan for Tamil Nadu (2007-2009):
With DHI and Nordeco, DHI GRAS was involved in an ICZM project comprising the entire coastline of Tamil Nadu in India. DHI GRAS mapped the coastal land use, land sustainability and land capability based on medium and high resolution satellite data.

Mapping renewable energy potential in Mali (2007 – 2008):
In cooperation with the University of Copenhagen and Risø National Laboratory, Technical University of Denmark, DHI GRAS was leading the mapping of the potential of renewable energy for the entire country of Mali. DHI GRAS performed the solar power potential analysis where the amount of available energy was modelled with a temporal resolution of 15 minutes based on a time series of Meteosat Second Generation data.

Invasive species mapping (2007)
Together with NIRAS,  DHI GRAS  mapped giant hogweed (bjørneklo) in Odense Municipality, Denmark. 60 cm resolution QuickBird images were used for the analysis, enabling a detailed mapping of the distribution of giant hogweed. The maps were used for targeting eradication efforts on the ground.

2006

Forest cover assessment and capacity building (2006-2007)
DHI GRAS was selected for performing independent accuracy assessment of forest cover maps produced by the Forestry Administration of Cambodia. Training and capacity building within remote sensing and automated mapping methods were also included.

Marine and Coastal Environmental Information Services (2006 – 2008) 
DHI GRAS became part of the MarCoast consortium under GMES ((Global Monitoring for Environment and Security) funded by the European Space Agency (ESA). Together with DHI, DHI GRAS provided quality forecasts of hydrodynamic and ecosystem parameters of key interest to a wide user group. DHI GRAS was responsible for developing and maintaining near-real-time data processing systems and improvement of existing monitoring systems.

North Sea Water Parameters (2007) 
In cooperation with DHI, DHI GRAS set up and maintained data processing systems delivering water quality parameters for the North Sea area to “New Earth Observation Services Integration into the Service Support Environment” – an ESA funded initiative led by SPACEBEL.

Lake catchment delineation, Sweden (2006)
In collaboration with DHI DK and DHI SE, DHI GRAS derived catchment areas for 12.000 lakes in Sweden. Automated processing routines were developed for handling this large volume task at with a high accuracy.

ENVIPE III – land cover changes in Peru (2006-2009)
As a continuation of previous projects in the region, DHI GRAS performed land cover mapping and change detection in a rain forest environment in Amazonas, Peru. DHI GRAS worked with archaeologists, anthropologists and botanists to synthesise land cover changes over the past 500 years, with detailed analyses supported by satellite images and GIS to document changes over the past 35 years.

Change detection in the Lake Kyoga area, Uganda (2006)
DHI GRAS performed change detection and mapping changes in water levels in Lake Kyoga in Uganda. Time series of remote sensing data mapped changes in the reservoir capacity.

Invasive species mapping (2006)
Together with NIRAS, DHI GRAS mapped giant hogweed (bjørneklo) in the county of Nordjylland, Denmark. 60 cm resolution QuickBird images were used for the analysis, enabling a detailed mapping of the distribution of giant hogweed. The maps were used for targeting eradication efforts on the ground.

Detection of illegal waste sites, N. Ireland & Rep. of Ireland (2006-2007)
In this INTERREG project, DHI GRAS identified and mapped illegal waste sites in four counties in Northern Ireland and the Republic of Ireland. The identification will be based on Very High Resolution images (QuickBird, Ikonos) as well as thermal infrared data.

Satellite Eye (2006-2007)
The project delivered satellite images for the Galathea 3 expedition. The aim of the project was to provide daily updated satellite images for the expedition. Daily images were published through a Google Earth / Java interface and various case studies using remote sensing were presented.

Software development – image processing (2006) 
Based on funding from the Danish Research Agency, DHI GRAS assisted the Wind Energy Department at RISØ National Laboratory with further development of software to be used to extract wind statistics from time series of RADAR data.

Mapping and monitoring ice conditions in Greenland (2006)
DHI GRAS conducted a mapping of the ice conditions of a fjord area in West Greenland for the Greenland Survey- Asiaq. Based on analyses and classification of reflectance data from MODIS 250 m data the ice conditions of the area was examined and ice-free periods were identified.

Change detection on Very High Resolution data (2006)
DHI GRAS performed a change detection based on Very High Resolution satellite imagery in various locations in Asia, using 0.6 m QuickBird and 1 m Ikonos imagery to assess small scale morphological changes in dynamic coastal environments.

Optical remote sensing and detection of sub surface oil spill (2006)
In this EU project DHI GRAS evaluated the use of optical remote sensing for detecting sub-surface oil spills. Feasibility studies related to three different oil spill cases were performed, including aspects such as spectral resolution, depth penetration (in the sea), spatial scale and acquisition timing.

Road feasibility study using remote sensing in Zambia (2006)
DHI GRAS used remote sensing for assisting a road construction project in Zambia. Land cover and soil classifications based on remote sensing data optimised the field effort by identifying areas with similar soil conditions. Furthermore, Very High Resolution data are extremely useful as an updated source of information, especially in remote areas where existing maps may be of low quality.

2005

HORUS – Heritage Observation and Retrieval Under Sand (2005-2006)
In this ESA DUE Innovator project, DHI GRAS worked with Rovsing (Denmark), SOGESI (Italy) and CULTNAT (Egypt) using satellite images to recognize and find archaeological sites in Egypt. Pattern recognition and data fusion methods based on a combination of radar images and very high resolution optical data were used.

Coastline change detection (2005)
DHI GRAS was involved in several coastline change detection studies in South East Asia in late 2005. Time series of satellite images can be used for analysing sediment transport and erosion back to the 1950s. With Very High Resolution images at 60 cm resolution, very detailed studies can be made.

Tsunami Impact Mapping (2005)
DHI GRAS undertook a study involving Very High Resolution data to assess the effect of mangroves for protecting the coastlines of South East Asia in relation to the tsunami that struck the area on 26 December 2004. An article was  published in Science on 28 October 2005. 

EOMD – Earth Observation Market Development, phase 2 (2005-2007)
Funded by the European Space Agency (ESA), a near real time processing chain of ENVISAT and MODIS data was designed and maintained for the Bay of Chile. The data was used as input to DHI’s numerical ocean models with  Sea Surface Temperature and Chlorophyll a as the main products. The project ran for 18 months during which new automated quality assurance procedures and extensions to traditional assimilation setups were produced.

Educational material (2005)
In cooperation with the Institute of Geography, University of Copenhagen, DHI GRAS was involved in the design and creation of the future remote sensing teaching material to be used by high schools in Denmark.

Power plant recirculation (2005)
High resolution Sea Surface Temperature maps were produced in order to map the spatial pattern of cooling water discharge from a power plant i Malaysia. The study also included mapping of changes in the coastal environment over the past 30 years.

EO Data Application for Aquaculture Enterprises (2005)
In this ESA project, DHI GRAS evaluated methods for near-real time monitoring the marine and coastal environmental conditions that can impact the safe and efficient operation of aquaculture facilities (fish farms).

Sediment mapping off the coast of Britain (2005)
DHI GRAS evaluated the MERIS sediment product and compared it with in situ measurement from buoys. The project was a feasibility and demonstration study in relation to the construction of off-shore wind mills farms for the European Space Agency (ESA). 

Validation of ENVISAT AATSR data (2005) 
DHI GRAS evaluated the use of ENVISAR AATSR data for ESA, the European Space Agency. The data was analysed with respect to assimilation in numerical ocean models.

GIS Training Course (2005) 
A two-week GIS training course was conducted in Ouagadougou, Burkina Faso for agricultural and environmental engineers. The course was tailored specifically to match the needs of PNGT staff and included GIS and remote sensing topics and exercises.

Snow cover mapping for reservoir management (2005)
DHI GRAS was involved in a snow cover mapping project in the Middle East where discharge of melt water was modelled in relation to hydropower installations.

2004

High resolution satellite data (2004)   
DHI GRAS became a licensed reseller of Ikonos, QuickBird and SPOT imagery through agreements with SpaceImaging, DigitalGlobe and Spot Image.

Dynamic map legends (2004) 
DHI GRAS developed context sensitive map legends for international vector data sets. The work included how to account for missing data depending on the properties of the given area.

Mangrove mapping, South East Asia (2004) 
DHI GRAS performed an extensive mapping and change detection analysis of mangrove areas in South East Asia.

EOMD – Earth Observation Market Development (2004-2005) 
In this project funded by the European Space Agency (ESA) DHI GRAS delivered near real time satellite images as input to DHI’s numerical ocean models. Sea Surface Temperature and Chlorophyll a were the main products.

EO Response to Geo-Information Market Drivers Proposal for a Study Related to Development and Operation Needs for Offshore Wind Farms (2004) 
DHI GRAS identified the scope for using remote sensing data in the development of offshore wind farms. The project was carried out in cooperation with Argoss (the Netherlands) and Radarsat Inc. (Canada) and British Marine Technology (UK). The project was funded by the European Space Agency (ESA).

Sea Surface Temperature of the Mexican Gulf (2004 – ) 
DHI GRAS delivered near real time SST images for water forecasting in the Mexican Gulf. The images were processed and automatically delivered by ftp to the client.

Training course in remote sensing (2004) 
A two-week training course in remote sensing and WinCHips application programming was conducted at the Department of Water Affairs Gaborone, Botswana.

2003

Land use change mapping in Peru (2003-2005) 
DHI GRAS performed land use/land cover change mapping in the province of San Martin in a rapidly developing rainforest area on the eastern slopes of the Andes. The work consisted of data processing, land use classification and training.

SURF – Survey and Assessment of Advanced Feature Extraction Techniques and Tools for EO Applications (2003-2004) 
The project consisted of performing a survey for classification of remote sensing data and selecting the three most promising methods. DHI GRAS provided expertise in applied EO, method development and implementation and use of optical EO data. The project was funded by ESA and Consortium partners (ROVSING A/S, Ørsted- DTU and the Institute of Computer Science, University of Copenhagen).

Okavango Delta Management Plan (2003-2004) 
DHI GRAS delivered a topographical model to be used as input for hydrological modelling in the Okavango Delta, Botswana. The work was based on time series of high resolution remote sensing data combined with analyses of water level and discharge from hydrological stations in the Delta.

Kabul River Basin (2003) 
In the autumn of 2003, DHI GRAS performed training in remote sensing for a study in Afghanistan. The work was carried out during four separate missions to the client’s offices in Mashad, Iran. The tasks included land cover mapping, processing of remote sensing precipitation data and snow cover mapping.

Rødsand Coastal Monitoring (2003-2004) 
The coastline of the Rødsand barrier complex in Southern Denmark was analysed using time series of high resolution satellite data such as SPOT and IRS. The study was used to analyse the sensitivity of the coastline before and after the construction of an offshore wind farm. Declassified images from American spy satellites were used to track changes back to 1960.

Operational Supply of Chlorophyll a maps (2003) 
DHI GRAS delivered near real time chlorophyll a maps derived from SeaWiFS imagery. Images were received two times a day at the in-house receiving station and processed within 50 minutes of reception. The customer got access to data about 60 minutes after the satellite overpass. 

2002

Mead (October 2002) 
DHI GRAS processed and provided the MEAD project with historical SeaWiFS chlorophyll a data from the Danish waters.

CONWOY (2002 – 2005) 
Consequences of weather and climate changes for marine and freshwater ecosystems – conceptual and operational forecasting of the aquatic environment. A Danish research program with nine partners from interdisciplinary institutions in Denmark. DHI GRAS provided information and data derived from satellite images.

Operational Supply of Chlorophyll a maps (July – August 2002) 
DHI GRAS deliered near real time chlorophyll a maps derived from SeaWiFS imagery to The Danish National Research Institute, The Finnish Institute of Marine Research and four Danish counties.

GIS course (2002) 
Introduction to GIS and hands-on exercises in ArcView for consultants and advisors dealing with natural resources and the environment. The course was prepared in collaboration with Institute of Geography, University of Copenhagen.

2001

Chlorophyll monitoring (2001) 
Mapping of chlorophyll a concentrations using satellite images for a Danish county during a period of high algae concentrations.

Thermal Cover Strategies (2001) 
Studying thermal Cover Strategies for Nanisivik Mines Ltd. using the WinSoil Model. The project was carried out in collaboration between the Institute of Geography, University of Copenhagen and DHI GRAS.

GIS and Water Resource Management (2001) 
Implementing GIS for national water resource management in Senegal. The project was lead by COWI and done in collaboration with the Ministry of Water Resources in Senegal.

SISCAL (2001-2004) 
Satellite-based information Systems on Coastal Areas and Lakes – an EU funded research project with 10 international partners. The aim of the project was to develop a processor that provides end-users with satellite derived information on ocean waters, coastal areas and lakes. The satellite derived maps were tailored to match the needs of the individual end-user and the data was distributed through the internet. DHI GRAS was in charge of the commercial aspects of the project at Institute of Geography, University of Copenhagen.

NOAA AVHRR data supply (2001, 2002, 2003) 
Operational supply of NOAA AVHRR images to weather forecast services in Denmark.

Environmental monitoring, Remote Sensing and GIS (I) (2001 – 2002) 
Assisting the process of implementing a State of the Environment monitoring program in Burkina Faso using remote sensing data and GIS. This is done in collaboration with Centre de Suivi Ecologique, Dakar, Senegal for the Programme National de Gestion des Terroirs (Ouagadougou, Burkina Faso).

Environmental monitoring, Remote Sensing and GIS (II) (2001 – 2002) 
Implementing systematic monitoring of the environment and natural resources in the province of Komondjari, Burkina Faso using remote sensing and GIS, for the Danish agricultural sector program (PADDAB) in Burkina Faso.

Sea surface temperature (2001) 
Weekly supply of Sea Surface temperature data derived from NOAA AVHRR satellite data to DHI.

Coastal development (2001) 
Using historic and recent satellite images to study coastal development and sediment transport in Asia for DHI.

GIS course (2001) 
An intensive three-week GIS course was conducted, including an introduction to vector and raster GIS data models as well as an introduction to more advanced GIS topics and Remote Sensing. The course was tailored to post-contract technical staff from the Danish Ministry of Foreign Affairs.

2000

SIAP (2000-2002) 
Development of Geographic Information System (GIS) applications in marine resources management for the EU Joint Research Centre (JRC) – Italy. The work includes design and the development of an ArcView extension to facilitate easy mapping of remote sensed images with vector GIS included as overlays.

Sediment transport assessment (2000) 
Assessing sediment transport in the Waddensea for the County of Ribe and Sønderjylland.

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Wind resource mapping and analysis in Vietnam

wind resource mapping
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How we helped:

GIS assessment for wind resource mapping, such as existing grid infrastructure, wind speed, land use, topology, proximity to protected areas or population density as an energy planning. Allowing the Government of Vietnam to integrate renewable energy into the energy system. Providing a national benefit and achieving the long-term objectives of reducing GHG emissions.

Project highlights:

Mapping of high-potential wind energy clusters for potential renewable energy development

Provision of different scenarios based on the relative share of importance of the different exclusion criteria (e.g. land use)

Evaluation of technically feasible potential using economic criteria, in this case additional costs associated with infrastructure proximity and projected annual wind power generation

In more detail..

The Government of Vietnam is pursuing the integration of renewable energy into the energy system for the national benefit to economically optimize and achieve the long-term objectives of utilizing renewables and reducing the GHG emissions.

In this context, DHI GRAS conducted a GIS assessment applying different screening criteria, such as existing grid infrastructure, wind speed, land use, topology, proximity to protected areas or population density as an energy planning exercise. The assessment provided maps of potential wind power project development sites which were included into an energy model, to provide input to the power system planning practices in Vietnam. An evaluation of the technically feasible potential was done using economic criteria, in this case additional costs associated with infrastructure proximity and projected annual wind power generation.

The results of the mapping and modelling study were presented at a workshop in Hanoi with more than 30 participants including government officials, consultants and experts in the renewable energy sector. The consultation workshop was followed by a 1-day GIS-based training on renewable energy resources mapping analysis, using exclusion criteria on different layers of infrastructure, land use and administrative maps.

The project was carried out by Ea Energy Analyses in collaboration with DHI GRAS and the Institute of En-ergy (Viện Năng lượng) within the framework of the Danish-Vietnamese cooperation between the Danish Energy Agency and the Ministry of Industry and Trade of Vietnam.

The funding of the project was provided by the German Corporation for International Cooperation (GIZ) GmbH. ​

Read Final Report

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Earth Observation for Sustainable Development: Water Resources

Earth Observation for Sustainable Development
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Why is it important?

Benefit from the utility of EO services in response to stakeholder requirements for water resources monitoring and management at local to basin scales.

Project highlights:

Following a systematic, user driven approach to meet longer-term, strategic geospatial information needs in the individual developing countries, as well as international and regional development organizations

Provision of EO demonstrations in Africa (Sahel, Africa Horn and Zambezi), Asia (Myanmar and Lao PDR) and Latin America (Bolivia and Peru), and within water related operations of major IFI’s including World Bank, Asian Development Bank, Inter-American Development Bank and the Global Environmental Facility

Advancing the current status of the adoption, progressive transfer and mainstreaming of EO-based information services as a standard management support tool within development operations at the national and international level

Director & Component 1 Director,
Hydro-Informatics Centre (HIC) &
Ayeyarwady Integrated River Basin Management Project
Prof. Dr. Khin-Ni-Ni Thein

Myanmar is vulnerable to seasonal floods and water related extreme weather events, which has led to establish a National Integrated Flood Management Platform under the National Water Resources Committee (NWRC).

Our finding is that seasonal information on flood dynamics and patterns are of high importance for planning- and management purposes in Myanmar. Such information is currently not available on a large geographical- and time scale, and that is where Earth Observation really adds value.

In more detail..

Satellite Earth Observation (EO) technology has a tremendous potential to inform and facilitate international development work.

EO4SD — Earth Observation for Sustainable Development — is an ESA initiative to support the uptake of EO-derived information in sustainable development, and with a focus on top-priority thematic areas including water resources management.

Since 2008, the European Space Agency (ESA) has worked together with International Financing Institutions (IFIs) and their client states to harness the benefits of EO in their operations and resources management.

Specifically, for water resource management the EO4SD will seek to demonstrate the benefits and utility of EO services in response to stakeholder requirements for water resources monitoring and management at local to basin scales. The EO4SD project started in 2016 and will end in autumn 2019.

Some of the key water related priority areas where EO-based geo-information is needed include:

 

  • River basin characterization and change monitoring (e.g. hydrological network mapping, long-term climate change analysis)
  • Water supply and sanitation (e.g. monitoring of water quality, extent and level of lakes and rivers to support management for agricultural, industrial and urban water use)
  • Hydrological management (e.g. modeling and forecasts of runoff, river discharge and groundwater abstraction)
  • Water productivity (e.g. mapping of biomass production, evapotranspiration and crop type)
  • Risk management of natural hydrological hazards (e.g. mapping and forecasting of flooding, drought, landslides)
  • Industrial activity assessment (e.g. monitoring of freshwater fisheries, aquaculture, hydropower and mining)
Explore EO4SD WRM Website

Earth Observation for Sustainable Development:​

Earth Observation for Sustainable Development (EO4SD)– is an ESA initiative which aims to achieve a step increase in the uptake of satellite-based environmental information in the IFIs regional and global programs.

It will follow a systematic, user-driven approach in order to meet longer-term, strategic geospatial information needs in the individual developing countries, as well as international and regional development organizations.

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Earth Observation for Sustainable Development: Agriculture and Rural Development

Rural development
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Why is it important?

Enhances awareness and uptake of EO-based geo-information to support worldwide agricultural monitoring and management tasks. Providing insights in agriculture and rural development all around the world.

Project highlights:

Increase awareness and uptake of information derived from satellite imagery in regular development operations at national and international level

Provide capacity training to project teams in client states for remote sensing and GIS

Deliver EO-derived information to project teams supporting sustainable land management

IAP Food Security Ethiopia Project Manager ,
UNDP Ethiopia

Dr. Tesfaye Haile Dargie

Our cooperation with DHI GRAS on the development of low-cost monitoring systems, based on the application of open source GIS software and freely available optical and radar satellite images has exceeded our expectations.

DHI GRAS has with great skill and user-friendliness delivered a hands-on approach to using freely available data and technology to carry out participatory forest monitoring in large tropical forest areas. The combination of desk analyses and field verification creates a powerful and efficient tool, which has been an invaluable input to our own organisation as well as our partners in Latin America.

In more detail..
Satellite Earth Observation (EO) technology has a tremendous potential to inform and facilitate international development work.

EO4SD — Earth Observation for Sustainable Development — is an ESA initiative to support the uptake of EO-derived information in sustainable development, and with a focus on top-priority thematic areas including agriculture and rural development.

Since 2008, the European Space Agency (ESA) has worked together with International Financing Institutions (IFIs) and their client states to harness the benefits of EO in their operations and resources management.

DHI GRAS contributes to EO4SD with indicators for the monitoring of sustainable land management interventions in Burkina Faso, Ethiopia and Morocco. The EO4SD project started in 2016 and will end in autumn 2019.

The project aims to demonstrate that the effectiveness of the MDB’s technical assistance interventions and financial investments in agriculture sector can be measurably enhanced by using EO-derived information to support:

  • Large-scale crop area and type estimate (i.e. crop cover mapping and status assessment)
  • Irrigation and irrigation systems management (i.e. energy balance, water productivity and water stress)
  • Agriculture productivity assessment (i.e. yield estimation, ground water, precipitation monitoring)
  • Rural infrastructure investments planning and monitoring (i.e. households and transport networks mapping)
  • Land Degradation Assessment (i.e. land use, rainfall, soil moisture, precipitation, FAPAR, NDVI indicators)
  • Ecosystem services assessment (i.e. water quality assessment, nitrogen content, land surface properties)
  • Environmental Impact Assessment (i.e. landscape level classification and change mapping including fragmentation, and agriculture commodities production impact on deforestation)
Explore EO4SD ARD Website

Earth Observation for Sustainable Development:

Earth Observation for Sustainable Development (EO4SD)– is an ESA initiative which aims to achieve a step increase in the uptake of satellite-based environmental information in the IFIs regional and global programs.

It will follow a systematic, user-driven approach in order to meet longer-term, strategic geospatial information needs in the individual developing countries, as well as international and regional development organizations.

EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

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CVR: 36466871

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InnoWind – wind energy efficiency

wind energy mapping
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Why is it important?

The improved services provided by Danish companies will decrease the cost of wind energy development by significantly increasing the precision of wind resources assessments and lowering uncertainty in the planning phase.

Project highlights:

Develop novel algorithms to derive aerodynamic surface properties from Copernicus data and test against ground truth at wind energy sites

Integrate satellite-based map layers seamlessly in flow models operated by industrial end-users

Document the scientific and financial impact of new satellite-based map layers for wind resource assessment

In more detail..

The InnoWind project has been funded by the Innovation Fund Denmark and is being conducted by DHI GRAS together with DTU Wind Energy and DTU Space, as well as wind industry leaders Vestas, EMD International and Vattenfall. The project is expected to run from 2017 to 2020.

InnoWind gives Danish companies a competitive edge in a rapidly growing market of wind resource assessment by equipping them with more accurate tools than competitors.

The improved services provided by Danish companies will decrease the cost of wind energy development by significantly increasing the precision of wind resources assessments and lowering uncertainty in the planning phase.

This will benefit energy systems planning and have a positive effect on financing of wind farms. Additionally, public entities establishing wind atlases will benefit from high quality model inputs; this is particularly relevant for emerging wind energy markets where such atlases are currently absent.

InnoWind will provide added value to end-users by delivering:

  • New methods for direct satellite-based parameterization of the surface drag force
  • Novel satellite-based map layers prepared for integration with flow models at the meso- and microscale – e.g. forest height and land cover
  • Adaptation of flow models to utilize new satellite-based input maps
  • Documentation of the scientific and financial impact of the project developments
  • Commercial exploitation of satellite-based products and services
Explore InnoWind website

Innovation Fund Denmark:

The overall aim of Innovation Fund Denmark is to support the development of knowledge and technology, including advanced technology, in order to strengthen research and innovative solutions that may benefit growth and employment in Denmark.

Sea and Coast monitoring

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GlobWetland Africa

Wetland monitoring
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Why is it important?

GlobWetland Africa will help African authorities make the best use of satellite-based information on wetland extent and conditions. Allowing better measurements of the ecological state of wetlands and their capacity to support biodiversity and provide ecosystem services.

Project highlights:

Exploiting the increasing capabilities of satellite observations for wetlands inventory, assessment and monitoring

Developing a free of charge and open source software toolbox to better assess the state and change in wetlands and access “freely available” satellite observations from the Sentinel missions of the European Copernicus initiative

Enhancing the capacity of African stakeholders to develop national and regional wetland observatories

In more detail..

GlobWetland Africa (GW-A) is a large Earth Observation application project funded by the European Space Agency (ESA) in partnership with the African Team of the Ramsar Convention on Wetlands.

The project is initiated to facilitate the exploitation of satellite observations for the conservation, wise-use and effective management of wetlands in Africa and to provide African stakeholders with the necessary Earth Observation (EO) methods and tools to better fullfil their commitments and obligations towards the Ramsar Convention on Wetlands.


As an ultimate objective GW-A will aim to enhance the capacity of the African stakeholders to develop their own national and regional wetland observatories.

Explore GW-A Website

European Space Agency:

The European Space Agency (ESA) is the European space programme and its mission is to explore Earth, its immediate space environment, our Solar System and the Universe.

ESA also works closely with space organisations outside Europe to develop satellite-based technologies and services, and to promote European industries.

Explore the data:

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SEN-ET

evapotranspiration SEN-ET
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Why is it important?

A growing population and economy together with climate change are putting pressure on fresh water availability around the globe.

SEN-ET is the Estimation of evapotranspiration (ET) based on the Sentinel satellites. By providing insights in ET we can improve irrigation efficiency. Thus assisting in monitoring several of the UN Sustainable Development Goals (SDGs), in particular: SDG2 – zero hunger, and SDG6 – clean water and sanitation.

Project highlights:

Developing an optimal methodology for estimating ET at both fine (tens of meters) and coarse (kilometer) spatial scales, based on synergistic use of Sentinel 2 and Sentinel 3 satellites’ observations

Robustly validating the estimated ET in numerous land use classes and climatic conditions, with special focus on agricultural areas

Implementing the method as an open source application, with free and open access to the code and application, integrated into existing software tools

In more detail..

SEN-ET (SENtinel EvapoTranspiration) is an Earth Observation application project funded by the European Space Agency (ESA).

The main objective of SEN-ET is to develop an open source implementation method for estimation of evapotranspiration, both at fine (tens of meters) and coarse (kilometre) spatial scales, based on the synergistic use of Sentinel 2 and 3 satellites.

The project focuses on agricultural applications of ET but also involves evaluating the model output in other land-covers (e.g. forest).

The project consists of three phases:

1. Reviewing of existing methodologies for estimation of ET and for bridging the spatial gap between S2 and S3 observations.

2. Prototyping and benchmarking the most promising approaches and evaluating the outputs in a number of ecosystems.

3. Fully implementing the best performing approach as an open-source software application.

A number of key users are expected to benefit from the developed ET modelling application.
Among them are:

  • Agriculturalists and organisations serving the needs of agriculturalists
  • Scientists and research organisations working in the fields of agriculture, hydrology and remote sensing
  • Data providers
  • Regional, national and international governmental and non-governmental organisations and initiatives
Explore SEN-ET Website

European Space Agency:

The European Space Agency (ESA) is the European space programme and its mission is to explore Earth, its immediate space environment, our Solar System and the Universe.

ESA also works closely with space organisations outside Europe to develop satellite-based technologies and services, and to promote European industries.

EOatDHI part of the DHI GROUP

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CVR: 36466871

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Forests of the World

Forest monitoring
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How we helped:

The amazon is described as the lungs of our earth. Forest monitoring plays an essential role in checking its health. We developed a low-cost monitoring system for efficiently monitoring forest areas in Latin America, based on open source software and free data sources.

Project highlights:

Capacity building within the use of satellite imagery for effective, systematic and routinely monitoring of deforestation within indigenous’ territories in Latin America

Providing a low cost monitoring system based on open source GIS software and freely available optical and radar satellite images

Provision of on-site tailormade technical workshops focusing on effective coupling local field surveys with satellite remote sensing

Coordinator & Technical Adviser,
Forest of the World
Jakob Rydding

Our cooperation with DHI GRAS on the development of low-cost monitoring systems, based on the application of open source GIS software and freely available optical and radar satellite images has exceeded our expectations.

DHI GRAS has with great skill and user-friendliness delivered a hands-on approach to using freely available data and technology to carry out participatory forest monitoring in large tropical forest areas. The combination of desk analyses and field verification creates a powerful and efficient tool, which has been an invaluable input to our own organisation as well as our partners in Latin America.

In more detail..

We successfully co-lead two technical workshops, hosted by the NGO Forests of the World (Verdens Skove), that introduced satellite-based monitoring of forest cover changes in indigenous territory in Bolivia and Panama.

The workshop participants were trained in the following topics:

  • Fundamental concepts and properties of Earth Observation satellites for forest cover monitoring
  • Working with satellite image, GIS and GPS data in QGIS
  • Accessing and preprocessing of optical and SAR satellite imagery
  • Mapping of changes related to deforestation based on earth observation
  • Collecting field observation and linking this to the satellite image analysis in QGIS.

Forests of the World:

Forests of the World (Verdens Skove) is an environmental NGO founded in Denmark in 1983 with the objective to conserve and manage the world’s forests in a sustainable way.

They create opportunities for communities and people, who aspire to save the forests of the world and aim to demonstrate and prove the value of the living forest through campaigns, consumer information, training, cooperation, and concrete work in and around the rainforest.

EOatDHI part of the DHI GROUP

gras@dhigroup.com
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CVR: 36466871

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EOatDHI part of the DHI GROUP

gras@dhigroup.com
+45 4516 9100

Agern Alle 5,
2970 Hørsholm,
Denmark

CVR: 36466871

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