Hannover 2003 – wissenschaftliches Programm
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UP: Umweltphysik
UP 5: Atmosphäre und Klima
UP 5.5: Vortrag
Freitag, 28. März 2003, 12:30–12:45, TIB
Ozoneproduction caused by biomass burning in the Tropics — •Annette Ladstaetter-Weissenmayer1, Andreas Richter1, Folkard Wittrock1, Mark Lawrence2, and John P. Burrows1 — 1Institut fuer Umweltphysik Bremen — 2Max Planck Institut Mainz
The Global Ozone Monitoring Experiment (GOME) is the first European passive remote sensing instrument measuring the sunlight back scattered by the surface in nadir viewing mode in the spectral region 240-790 nm since its successful launch on 21st of April 1995 onboard ERS-2 in Kourou. Global coverage is achieved in three days. The main scientific objective of the GOME mission is to measure the global distribution of ozone (O3) and several other trace gases which play an important role in the chemistry of the Earth’s stratosphere and troposphere, for example, NO2, BrO, OClO, HCHO and SO2. In the tropics the burning of biomasses (forests, grasslands, and cultivated fields after the harvest) is extensive every year and now considered to be one of the most significant sources of atmospheric pollution. During biomass burning events large amounts of aerosols and trace gases like nitrogen oxide (NOx), hydrocarbons, oxygenated products like formaldehyde (HCHO) and carbon monoxide (CO) are emitted into the troposphere. In photochemical reactions tropospheric O3 is produced. Calculating the tropospheric O3 based on GOME-data it is possible to observe an increasing of this trace gas during fire events. The results of the tropospheric colums of O3 from GOME were compared with the outputs of O3-SHADOZ-sondes, FURM (Full Retrieval Method) and the MATCH-MPIC-model to validate the retrieval method.