From 1 - 10 / 73
  • The Global Ozone Monitoring Experiment-2 (GOME-2) was launched on October 2006 on board EUMETSAT's Metereological Operational Satellite (MetOp-A). This instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME/ERS-2 and SCIAMACHY/Envisat. It can measure a range of atmospheric trace constituents, with the emphasis on global ozone distributions. Furthermore cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2/MetOp level 2 products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Chemistry Monitoring (AC-SAF). GOME-2 near-real-time products are available already two hours after sensing. The operational ozone total column products are generated using the algorithm GDP (GOME Data Processor) version 4.x integrated into the UPAS (Universal Processor for UV/VIS Atmospheric Spectrometers) processor for generating level 2 trace gas and cloud products. The new improved DOAS-style (Differential Optical Absorption Spectroscopy) algorithm called GDOAS, was selected as the basis for GDP version 4.0 in the framework of an ESA ITT. GDP 4.x performs a DOAS fit for ozone slant column and effective temperature followed by an iterative AMF/VCD computation using a single wavelength. The main improvements compared to GDP 3.0 are: • Molecular Ring Correction parameterised [M. van Roozendael et al. (2006)] • On-the-fly RTM simulations using LIDORT v3.3 [R. Spurr (2003)] • Cloud Correction using OCRA and ROCINN v2.0 [D. Loyola et al. (2007)] • Intra-Cloud, Sunglint and Snow/Ice Correction [D. Loyola et al. (2011)] For more details please refer to https://atmos.eoc.dlr.de/app/missions/gome2

  • The Global Ozone Monitoring Experiment-2 (GOME-2) was launched on October 2006 on board EUMETSAT's Metereological Operational Satellite (MetOp-A). This instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME/ERS-2 and SCIAMACHY/Envisat. It can measure a range of atmospheric trace constituents, with the emphasis on global ozone distributions. Furthermore cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2/MetOp level 2 products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Chemistry Monitoring (AC-SAF). GOME-2 near-real-time products are available already two hours after sensing. The operational BrO total column products are generated using the algorithm GDP (GOME Data Processor) version 4.x integrated into the UPAS (Universal Processor for UV/VIS Atmospheric Spectrometers) processor for generating level 2 trace gas and cloud products. Activities on further improvements of the BrO column algorithm are ongoing [Van Roozendael and Theys (2005), Theys et al. (2009b)] This work focuses on optimizing the accuracy of global total BrO columns, as well as polar tropospheric BrO columns. DOAS slant column fitting On the basis of noise driven considerations, the fitting window 336-351.5 nm was selected for the GOME-2. A BrO cross-section is included in the fit, as well as the cross-sections of the interfering trace gases: ozone, NO2, O2-O2. Two Ring reference spectrums are included as an additive fitting parameter. The detailed DOAS settings used for GOME-2 BrO slant columns retrieval are given in the [DLR/GOME-2/ATBD]. AMF and VCD determination The AMF is calculated with the LIDORT 3.3 model for the fitting window mid-point, since BrO is an optically thin absorber in this wavelength region. To incorporate the seasonal and latitudinal variation in stratospheric BrO in the AMF calculations, a stratospheric BrO profile climatology is used [Bruns et al. (2003)]. This climatology contains monthly mean BrO profiles as a function of latitude, based on the chemistry transport model SLIMCAT. For more details please refer to https://atmos.eoc.dlr.de/app/missions/gome2

  • Indian Remote Sensing satellites (IRS) are a series of Earth Observation satellites, built, launched and maintained by Indian Space Research Organisation. The IRS series provides many remote sensing services to India and international ground stations.

  • The Global Ozone Monitoring Experiment-2 (GOME-2) was launched on October 2006 on board EUMETSAT's Metereological Operational Satellite (MetOp-A). This instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME/ERS-2 and SCIAMACHY/Envisat. It can measure a range of atmospheric trace constituents, with the emphasis on global ozone distributions. Furthermore cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2/MetOp level 2 products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Chemistry Monitoring (AC-SAF). GOME-2 near-real-time products are available already two hours after sensing. The operational SO2 total column products are generated using the algorithm GDP (GOME Data Processor) version 4.x integrated into the UPAS (Universal Processor for UV/VIS Atmospheric Spectrometers) processor for generating level 2 trace gas and cloud products. GDP 4.x performs a DOAS fit for SO2 slant column followed by an AMF/VCD computation using a single wavelength. Corrections are applied to the slant column for: • Equatorial offset • Interference of SO2 and O3 absorption • SZA dependence The SO2 column for volcanic eruptions is calculated for 3 different assumed plume heights: 2.5 km, 6 km, 15 km. A description of the SO2 retrieval and validation is given in [Rix et al. (2009), Loyola et al. (2008), Thomas et al. (2005)] . A description of the tropospheric SO2 algorithm and validation is given in the reference listed in the GOME-2 documentation pages. For more details please refer to https://atmos.eoc.dlr.de/app/missions/gome2

  • The Medium Resolution Imaging Spectrometer (MERIS) on Board ESA’s ENVISAT provides spectral high resolution image data in the visible-near infrared spectral region (412-900 nm) at a spatial resolution of 300 m. For more details on ENVISAT and MERIS see http://envisat.esa.int/ Spectral high resolution measurements allow to assess different water constituents in optically complex case-2 waters (IOCCG, 2000). The main groups of constituents are Chlorophyll, corresponding to living phytoplankton, suspended minerals or sediments and dissolved organic matter. They are characterised by their specific inherent optical properties, in particular scattering and absorption spectra. The Baltic Sea Water Constituents product was developed in a co-operative effort of DLR (Remote Sensing Technology Institute IMF, German Remote Sensing Data Centre DFD), Brockmann Consult (BC) and Baltic Sea Research Institute (IOW) in the frame of the MAPP project (MERIS Application and Regional Products Projects). The data are processed on a regular (daily) basis using ESA standard Level-1 and -2 data as input and producing regional specific value added Level-3 products. The regular data reception is realised at DFD ground station in Neustrelitz. For more details the reader is referred to http://eoweb.dlr.de/short_guide/Waterparameter_BalticSea.html and http://www.brockmann-consult.de/mapp/project_information.htm This product provides seasonal maps.

  • The Medium Resolution Imaging Spectrometer (MERIS) on Board ESA’s ENVISAT provides spectral high resolution image data in the visible-near infrared spectral region (412-900 nm) at a spatial resolution of 300 m. For more details on ENVISAT and MERIS see http://envisat.esa.int/ This product developed in the frame of the MAPP project (MERIS Application and Regional Products Projects) represents the chlorophyll concentration of the North Sea derived from MERIS data. The product is a cooperative effort of DLR-DFD and the Institute for Coastal Research at the GKSS Research Centre Geesthacht. DFD pre-processed up to the value added level whenever MERIS data for the North Sea region was received and positively checked for a water area large enough for a suitable interpretation. For more information the reader is referred to http://eoweb.dlr.de/short_guide/Waterparameter_NorthSea.html and http://www.brockmann-consult.de/mapp/project_information.htm This product provides 10-day maps.

  • Indian Remote Sensing satellites (IRS) are a series of Earth Observation satellites, built, launched and maintained by Indian Space Research Organisation. The IRS series provides many remote sensing services to India and international ground stations. IRS LISS-III data are well suited for agricultural and forestry monitoring tasks.

  • The Medium Resolution Imaging Spectrometer (MERIS) on Board ESA’s ENVISAT provides spectral high resolution image data in the visible-near infrared spectral region (412-900 nm) at a spatial resolution of 300 m. For more details on ENVISAT and MERIS see http://envisat.esa.int/ This product developed in the frame of the MAPP project (MERIS Application and Regional Products Projects) represents the chlorophyll concentration of the North Sea derived from MERIS data. The product is a cooperative effort of DLR-DFD and the Institute for Coastal Research at the GKSS Research Centre Geesthacht. DFD pre-processed up to the value added level whenever MERIS data for the North Sea region was received and positively checked for a water area large enough for a suitable interpretation. For more information the reader is referred to http://eoweb.dlr.de/short_guide/Waterparameter_NorthSea.html and http://www.brockmann-consult.de/mapp/project_information.htm This product provides daily maps.

  • The Global Ozone Monitoring Experiment-2 (GOME-2) was launched on September 2012 on board EUMETSAT's Metereological Operational Satellite (MetOp-B). This instrument continues the long-term monitoring of atmospheric trace gas constituents started with GOME/ERS-2 and SCIAMACHY/Envisat. It can measure a range of atmospheric trace constituents, with the emphasis on global ozone distributions. Furthermore cloud properties and intensities of ultraviolet radiation are retrieved. These data are crucial for monitoring the atmospheric composition and the detection of pollutants. DLR generates operational GOME-2/MetOp level 2 products in the framework of EUMETSAT's Satellite Application Facility on Atmospheric Chemistry Monitoring (AC-SAF). GOME-2 near-real-time products are available already two hours after sensing. For more details please refer to https://atmos.eoc.dlr.de/app/missions/gome2

  • Indian Remote Sensing satellites (IRS) are a series of Earth Observation satellites, built, launched and maintained by Indian Space Research Organisation. The IRS series provides many remote sensing services to India and international ground stations. The revisit capability of only 5 days and the products coverage size of 370 km x 370 km make AWiFS products a valuable source for application fields such forestry and environmental monitoring

Datenschutz | Impressum