Bremen 2017 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
UP: Fachverband Umweltphysik
UP 5: Postersession
UP 5.2: Poster
Dienstag, 14. März 2017, 16:40–18:10, GW2 B3010
Comparison of NO2 vertical columns from satellite measurements with ground based measurements over Xianghe, China — •Lisa K. Behrens1, Andreas Hilboll2, Andreas Richter1, Enno Peters1, Francois Hendrick3, Michel van Roozendael3, and John P. Burrows1 — 1Institute of Environmental Physics, Bremen, Germany — 2MARUM, Bremen, Germany — 3Belgian Institute for Space Aeronomy, Belgium
NO2 is an important indicator for air pollution from anthropogenic sources. Due to its relatively short atmospheric life time, polluted areas can clearly be identified in global maps of satellite-derived NO2 abundances. For a better understanding of anthropogenic air pollution, there is constant need for validation of the satellite measurements using independent data sources. Here, we show a comparison of ground based and satellite measurements of NO2 tropospheric vertical columns (VCs) over Xianghe in Eastern China for the time period 2010-2013. The ground based data are from measurements by a Multi-Axis Differential Absorption Spectrometer (MAX-DOAS), located at 39.75°N and 116.96°E. For this study, the data of different satellite instruments were used.
The ground based measurements are compared with two different NO2 VCs retrievals from satellite measurements which are based on two different sets of a priori data. We investigate the influence of the satellite retrievals' a priori assumptions and other parameters on their agreement with the ground based observations, providing valuable information to further improve the satellite retrievals over China.