HR: 08:15h
AN: B51F-02    [Abstracts]
TI: Airborne Remote-Sensing of Atmoshperic CH4 and CO2 Column Mixing Ratio With MAMap - First Results
AU: * Tretner, A
EM: atretner@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam (GFZ), Telegrafenberg Haus B, Potsdam, 14473, Germany
AU: Gerilowski, K
EM: gerilows@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics (IUP) - University of Bremen, Otto-Hahn-Allee 1, Bremen, 28334, Germany
AU: Bovensmann, H
EM: heinrich.bovensmann@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics (IUP) - University of Bremen, Otto-Hahn-Allee 1, Bremen, 28334, Germany
AU: Buchwitz, M
EM: Michael.Buchwitz@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics (IUP) - University of Bremen, Otto-Hahn-Allee 1, Bremen, 28334, Germany
AU: Erzinger, J
EM: erz@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam (GFZ), Telegrafenberg Haus B, Potsdam, 14473, Germany
AU: Burrows, J
EM: burrows@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics (IUP) - University of Bremen, Otto-Hahn-Allee 1, Bremen, 28334, Germany
AB: The Methane Airborne Mapper (MAMap) performs quantitative CO₂ and CH₄ remote sensing measurements of the atmospheric column between an aircraft and the Earth's surface. Its two spectrometers cover wavelenghts of 1.59-1.62μm for CO₂, 1.63-1.75μm for CH₄ and 760nm for O₂. A CH₄ detection limit of <35ppbv and a resolution of <5% (at atmospheric background concentration of 1750ppbv) have been ascertained, which makes it possible to detect small changes within the atmospheric CH₄ column at a local and regional scale. The atmospheric column mixing ratios of CH₄ and CO₂ were calculated using the WFM-DOAS algorithm which is known from the retrieval of CH₄ and CO₂ column concentrations from nadir measurements by SCIAMACHY. MAMap addresses the uncertainties in the current greenhouse gas emission budgets and provides a link between local ground-based small-scale and global satellite-based measurements. The aim of future MAMap research programs is the detection and quantification of CH₄ and CO₂ emission sources of both natural and anthropogenic origin. MAMap is designed for flexible operations at various planes, e.g. the DLR Dornier 228, the DLR 'Falcon' or the DLR Gulfstream 'HALO' aircraft. The results presented here were performed with a Cessna aircraft T207 at a flight height of 700m and a flight speed of 200km/h. The related ground pixel size covers 18m (across-track) x 10m (along track, albedo 0.18). The preliminary assessment of the sensor sensitivity under field campaign conditions includes measurements over a variety of natural and anthropogenic CH₄ and CO₂ emission sources, like coal-fired power plants, landfill sites, wetlands, a large number of different land surface types and a simulated CH₄ source (CH₄ released from a pressured gas bottle). First results will be reported.
DE: 0480 Remote sensing
DE: 0490 Trace gases
DE: 1610 Atmosphere (0315, 0325)
DE: 1694 Instruments and techniques
SC: Biogeosciences [B]
MN: 2007 Fall Meeting