Hannover 2010 – wissenschaftliches Programm
UP 2.15: Poster
Dienstag, 9. März 2010, 16:30–18:30, Lichthof
Carbon dioxide and methane over Europe — •Anna Katinka Petersen1, Janina Messerschmidt1, Wouter Peters2, Justus Notholt1, and Thorsten Warneke1 — 1Institute of Environmental Physics, University of Bremen, Bremen, Germany — 2Wageningen University, Dept. of Meteorology and Air Quality, Wageningen, The Netherlands
Carbon dioxide (CO2) is the most important anthropogenic greenhouse gas. Human activities, primarily fossil fuel combustion and deforestation, are responsible for a continuing increase of its atmospheric concentration. The oceans and terrestrial ecosystems currently act as sinks for atmospheric CO2 and absorb approximately half of the anthropogenic emissions (IPCC, 2007). Ground-based solar absorption Fourier transform spectrometry (FTS) is a well-established remote sensing technique for the measurement of atmospheric trace gases and the most precise ground-based remote sensing technique to measure the total columns of atmospheric carbon dioxide. Our stations include Spitsbergen (78.92°N, 11.92°E), Orleans (47.96°N, 2.1°E), Bremen (53.11°N, 8.85°E) and Bialystok (53.2°N, 22.75°E). The latitude band between 30°N - 90°N of the Eurasian continent is a key region concerning greenhouse gases. We established a homogenized, well calibrated dataset of column CO2 and CH4 and used this dataset for source-sink estimates over Europe by the use of backward trajectory analysis. The Carbon Tracker Europe model is used to interpret our results and to identify sources and sinks of atmospheric carbon dioxide over Europe.