Thomas Heege

EOMAP

Changes and disturbances to water diversity and quality are complex and multi-scale in space and time. Although in situ methods provide detailed point information on the condition of water bodies, they are of limited use for making area-based monitoring over time, as aquatic ecosystems are extremely dynamic. Remote sensing (RS) provides methods and...

Satellite-Derived Bathymetry (SDB) methods have found their way into the hydrographers’ toolbox and are part of integrated survey concepts, nautical charts and support global and European programs such as Seabed2030 or EMODnet Bathymetry. The concept of the ‘physics-based’ SDB describes the calculation of bathymetry by modelling the sunlight path f...

This collection integrates data from the project "Spatial distribution of benthic habitats in shallow water marine ecosystems of the Mexican Caribbean using WorldView-2 (ArrecifeSAM) satellite images (2010-2018)". The study area covers the shallow waters of the Yucatan Peninsula in Mexico, from Cabo Catoche to Xcalak, as part of the Mesoamerican Re...

This article presents and analyses the modular architecture and capabilities of CODE-DE (Copernicus Data and Exploitation Platform – Deutschland, www.code-de.org), the integrated German operational environment for accessing and processing Copernicus data and products, as well as the methodology to establish and operate the system. Since March 2017,...

Providing relatively fine spatial resolution multispectral data, Landsat-8, Landsat-7 (L8 and L7, respectively) and Sentinel-2 (S2) from 2013 to 2018 have been used in this study for enabling high-frequency monitoring of water quality of two small (the smaller with an area of 1.6 km²) freshwater dammed reservoirs. Located in Sardinia (Italy) and Cr...

Freshwater as one of the most relevant resources for life is facing increasing human made pressures. Suitable information about the status of the water quality in lakes and rivers is sparse, although required for environmental assessments and impact monitoring: There is a vast demand on actual data in many countries, where water policies and manage...

This study presents the work developed as a CEOS action for which CSIRO and DLR taken the lead on a feasibility assessment to determine the benefits and technological difficulties of designing an Earth observing satellite mission focused on the aquatic (non-oceanic) ecosystems. I n fact, many Earth observing sensors have been designed, built and la...

Phytoplankton indicated by its photosynthetic pigment chlorophyll-a is an important pointer on lake ecology and a regularly monitored parameter within the European Water Framework Directive. Along with eutrophication and global warming cyanobacteria gain increasing importance concerning human health aspects. Optical remote sensing may support both...

Many Earth observing sensors have been designed, built and launched with primary objectives of either terrestrial or ocean remote sensing applications. Often the data from these sensors are also used for freshwater, estuarine and coastal water quality observations, bathymetry and benthic mapping. However, such land and ocean specific sensors are no...

The objective of this article is to provide an overview of the Satellite Derived Bathymetry methods, how data can be integrated into survey campaigns and finally to showcase three use cases. Bathymetric data in the shallow water zone is of increasing importance to support various applications such as safety of navigation, reconnaissance surveys, co...

The Committee on Earth Observation Satellites (CEOS) response to the Group on Earth Observations System of Systems (GEOSS) Water Strategy developed under the auspices of the Water Strategy Implementation Study Team was endorsed by CEOS at the 2015 Plenary. As one of the actions, CSIRO has taken the lead on recommendation C.10: A feasibility assessm...

Many Earth observing sensors have been designed, built and launched with primary objectives of either terrestrial or ocean remote sensing applications. Often the data from these sensors are also used for freshwater, estuarine and coastal water quality observations and bathymetry and benthic mapping. However, such land and ocean specific sensors are...

To demonstrate the applicability of the system developed in the project and to assess changing of the trophic status impacting water uses, EO data were used for selected deep waters. EO data provides in fact a synoptic vision and a good sampling frequency suitable for the evaluation not only of the trophic state but also of changes in trophic state...

The European collaborative project GLaSS aims to prepare for the use of the data streams from Sentinel 2 and Sentinel 3. Its focus is on inland waters, since these are considered to be sentinels for land-use- and climate change and need to be monitored closely. One of the objectives of the project is to compare existing water quality algorithms and...

Presentation on EnMAP atmospheric correction

EnMAP standard atmospheric correction

The presented adjacency correction algorithm is based on the use of the point spread function (PSF) which allows calculating the contribution of reflections from the nearby pixels to the apparent radiance of the target. The analytical expression of the PSF for an arbitrary stratified atmosphere is obtained in the approximation of primary scattering...

An operational satellite-based approach was implemented to monitor turbidity and organic absorption in the Mekong river system. Using physics-based algorithms linked together in a fully automated processing chain, more than 300 Landsat Enhanced Thematic Mapper (ETM) scenes and 1000 MODIS scenes, representing five years of data, were used to produce...

In 2010, Qatar Shell Upstream International B.V. (QSUI) re-entered Exploration in Qatar focusing on the relatively deep conventional Pre-Khuff gas plays with a view to discover additional hydrocarbons in the State of Qatar. In order to support Qatar Shell with the execution of onshore and offshore seismic programs, satellite imagery was used extens...

The scope of this document is to list the technical details of the initial test datasets that have been prepared for further work within the GLaSS project. The initial test data was generated by partners EOMAP and SYKE with input from the other consortium partners, and is available to the GLaSS consortium for further use in WP2, WP3 and WP4. This r...

Satellite-derived mapping and monitoring technologies can provide important support for a range of applications in the oil and gas industry. Prior to tasks such as pipeline routing and other infrastructure engineering activities, these technologies can be efficiently deployed over large, remote and/or in-accessible areas for bathymetry charting, ma...

Research, monitoring and management of large marine protected areas require detailed and up-to-date habitat maps. Ningaloo Marine Park (including the Muiron Islands) in north-western Australia (stretching across three degrees of latitude) was mapped to 20 m depth using HyMap airborne hyperspectral imagery (125 bands) at 3.5 m resolution across the...

Workflow for processing of Ningaloo field data (spectra and percentage cover) to develop the classification system including training and validation data sets. (TIF)

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Overview of the airborne data image pre-processing used for the Ningaloo Reef study. (TIF)

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Remote sensing has recently become a powerful tool for water quality monitoring. Satellite-borne remote sensing information about water quality indicators of inland water bodies has limited availability. Due to cloudy weather or satellite instrument unavailability, time periods without remote sensing scenes may vary from several hours to several we...

The construction of dams alters the flow regime and suspended sediment dynamics of a river essentially. This is also the case in the Lancang, the Chinese part of the Mekong river. The impact of the cascade of dams has been reported in a number of papers, but because the actual measured data are not accessible after the closure of the first dam in t...

The determination of the chlorophyll- a content by water sampling and subsequent liquid chromatography (HPLC) as well as algae species analysis using microscopy form the basis for many limnological studies and the assessment according to the EU WFD. Because of the sampling and analysis effort which is associated with these methods, for routine moni...

Satellite-derived bathymetry is now increasingly being utilized in applications for environmental management, natural resources, engineering, and navigation. Compared to traditional methods for mapping water column depth, it is cost effective, non-intrusive, rapid, and applicable to otherwise inaccessible areas. A number of different approaches hav...

A method to obtain underwater topography for coastal areas using state-of-the-art remote sensing data and techniques worldwide is presented. The data from the new Synthetic Aperture Radar (SAR) satellite TerraSAR-X with high resolution up to 1m are used to render the ocean waves. As bathymetry is reflected by long swell wave refraction governed by...

Numerous approaches characterising the radiation field of a water column have been developed and correction attempts for remote sensing data have been applied successfully. Various algorithms describe the complex interaction of biophysical parameters with down- and upwelling radiation in a water body and form the basis for water column correction....

We applied remote sensing techniques using WorldView-2 images with high spatial resolution and field verification to map the bathymetry and benthic habitats of the Puerto Morelos Reef National Park in the Mexican Caribbean. These images were processed using the standardized physics-based data processing of EOMAP´s Modular Inversion and Processing S...

We applied remote sensing techniques using WorldView-2 images with high spatial resolution and field verification to map the bathymetry and benthic habitats of the Puerto Morelos Reef National Park in the Mexican Caribbean. These images were processed using the standardized physics-based data processing of EOMAP´s Modular Inversion and Processing S...

Hyperspectral remote sensing technologies are predestined for analyses and monitoring tasks of coastal and shallow water regions. These technologies enable a simultaneous monitoring of an area which is efficient as well as time and cost saving compared to conventional mapping methods. The existing potential of airborne hyperspectral data to detect...

A method to obtain underwater topography for coastal areas using state-of-the-art remote sensing data and techniques worldwide is presented. The data from the new Synthetic Aperture Radar (SAR) satellite TerraSAR-X with high resolution up to 1 m are used to render the ocean waves. As bathymetry is reflected by long swell wave refraction governed by...

Sublitoral marine forests are functionally diverse ecosystems along cold-temperate to polar coastal rocky shores world-wide. They provide habitat and shelter for marine animals and plants and are of great economical and recreational importance. Submarine forests provide a primary production comparable to terrestrial virgin forests and serve as indi...

Multispectral satellite data (WordView-2, IKONOS, QuickBird) are used to map bathymetry and spectral sea floor classes in a range of coastal areas. The standardized physics-based data processing integrates MODIS satellite data for the radiometric intercalibration and estimates of turbidity. This process includes corrections for sunglitter, the adja...

Physics-based remote sensing in littoral environments for ecological monitoring and assessment is a challenging task that depends on adequate atmospheric conditions during data acquisition, sensor capabilities and correction of signal disturbances associated with water surface and water column. Airborne hyper-spectral scanners offer higher potentia...

The Applied Remote Sensing Cluster at the German Aerospace Center DLR has long lasting experiences with air- and spaceborne acquisition and processing of hyperspectral image data. Jointly with the German Space Operations Center it is responsible for the establishment of the ground segment of the future German hyperspectral satellite mission EnMAP (...

The German Aerospace Center DLR – namely the Applied Remote Sensing Cluster CAF and the German Space Operations Center GSOC – is responsible for the establishment of the ground segment of the future German hyperspectral satellite mission EnMAP (Environmental Mapping and Analysis Program). The Applied Remote Sensing Cluster has long lasting experien...

Traditional methods for aerosol retrieval and atmospheric correction of remote sensing data over water surfaces are based on the assumption of zero water reflectance in the near-infrared. Another type of approach which is becoming very popular in atmospheric correction over water is based on the simultaneous retrieval of atmospheric and water param...

Semi-analytical remote sensing applications for eutrophic waters are not applicable to oligo- and mesotrophic lakes in the perialpine area, since they are insensitive to chlorophyll concentration variations between 1 and 10 mg/m3. The neural network based Case-2-Regional algorithm for MERIS was developed to fill this gap, along with the ICOL adjace...

Earth observation sensors collect valuable data of aquatic systems, which are further used for the retrieval of concentrations of water constituents such as suspended matter and phytoplankton. Different sensors deliver data with various spatial and temporal resolution ranging from 1 day to approximately a month in time and from 1 km to 3 m in space...

The applicability of MERIS data for the retrieval of water constituent concentrations in oligo- to mesotrophic perialpine lakes is demonstrated by means of two different algorithms. The C2R algorithm is an easily applicable neural network processor which is bound to MERIS data. The MIP algorithm is a complex, coupled inversion program, which can be...

The integration of remote sensing data from multiple sensors for the estimation of the state of aquatic systems is induced by the necessity to have detailed information on both spatial distribution of water constituents and their temporal variability. The use of the modular image processing system MIP for this purpose ensures standardized product o...

A physically based water constituent retrieval algorithm is used for the automatic processing of MERIS level 1B full resolution data [1] [2]. The algorithm and the processing chain were both designed for Lake Constance. The algorithm was used successfully for several other marine and inland water environments. The original algorithm is used with se...

The objective of the ESA funded project “Development of MERIS Lake Water Algorithms” (January 2007 – June 2008) was to develop and validate a plug-in module for the BEAM toolbox that allows the retrieval of water quality parameters in lake waters from MERIS imagery. For this purpose, new algorithms were developed, based on the optical properties of...

A physically based, simultaneous air/water constituent algorithm is used for automatic processing of 5 MERIS level 1B FR datasets of Lake Constance. Its sensitivity to the adjacency correction tool ICOL is tested, and compared to variations in the wavelength dependence of aerosols. Further comparisons are made with MERIS NN algorithms for eutrophic...

A physically based water constituent retrieval algorithm is used for the automatic processing of MERIS level 1B full resolution data. The algorithm requires several input variables for individual optimization with different sensors (i. e. channel calibration and weighting), aquatic regions (i. e. specific inherent optical properties) or atmospheric...

A physically based algorithm is used for automatic processing of MERIS level 1B full resolution data. The algorithm is originally used with input variables for optimization with different sensors (i.e. channel recalibration and weighting), aquatic regions (i.e. specific inherent optical properties) or atmospheric conditions (i.e. aerosol models). F...

The Applied Remote Sensing Cluster of the German Aerospace Center (DLR) is responsible for the establishm ent of the payload ground segment for the future German hyperspectral satellite mission EnMAP (Environmental Mapping and Analysis Program), which is planned to be launched in 2012. EnMAP covers the spectrum from 420 nm to 2450 nm with a spectra...

General contamination of heavy metals in the environment is a major global concern, which has provoked the emergence of phytoremediation technologies for cleaning aquatic environment. Heavy metals are released into the environment from a wide range of natural and anthropogenic sources. Macrophytes are known as good indicators of heavy metal contami...

The Applied Remote Sensing Cluster of the German Aerospace Center (DLR) is responsible for the establishment of the payload ground segment for the future German hyperspectral satellite mission EnMAP (Environmental Mapping and Analysis Program), which is planned to be launched in 2012. EnMAP covers the spectrum from 420 nm to 2450 nm with a spectral...

The physically based Modular Inversion & Processing System (MIP) is used in a processing chain for inland water constituent retrieval from MERIS level 1B full resolution data. Reformatting, data import, water/land masking, atmospheric correction and water constituent retrieval are fully automatic, in order to allow the efficient analysis of large d...