Hamburg 2009 – wissenschaftliches Programm
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UP: Fachverband Umweltphysik
UP 3: Atmosphäre III
UP 3.4: Vortrag
Dienstag, 3. März 2009, 17:06–17:18, VMP 9 HS
Latitudinal Distribution of Trace Gases from Biomass Burning Emissions — •Theo Ridder1, Christoph Gerbig2, Armin Jordan2, Michael Rothe2, Thorsten Warneke1, and Otto Schrems3 — 1Institut für Umweltphysik, Universität Bremen, Otto-Hahn-Allee 1, 28359 Bremen — 2Max-Planck-Institut für Biogeochemie, Hans-Knöll-Str. 10, 07745 Jena — 3Alfred-Wegener-Institut für Polar- und Meeresforschung, Am Handelshafen 12, 27570 Bremerhaven
We study the latitudinal distribution of trace gases in the atmosphere with ground-based Fourier Transform InfraRed (FTIR) Spectrometry and in situ measurements. Our measurements have been performed during several ship cruises on the Atlantic (55°N - 30°S) between the years 1995 and 2005 on board of the research vessel Polarstern.
Here we report on the latitudinal variability of trace gases origining from biomass burning emissions. We analyze the distribution of these gases for recent cruises and compare it to the results from former trips. Thereby we concentrate on the distribution of carbon monoxide (CO), which is a suitable tracer for biomass burning.
We compare our data to in situ measurements, which have been accomplished during some of our cruises. In situ measurements have been performed by flask sampling and were analyzed by gas chromatography and mass spectrometry.
In addition we studied the backward trajectories of air masses to reveal the origin of enhanced trace gas concentrations due to biomass burning emissions.