News

New publication on the mercury distribution in the upper troposphere and lower stratosphere


The data provide an insight into the seasonal distributions of mercury in the upper troposphere and lower stratosphere (UT/LS) of both hemispheres and demonstrate the importance of mercury emissions from biomass burning in the southern hemisphere. Numerous plumes were observed in the upper troposphere, the larger of which could be characterized in terms of Hg/CO emission ratios and their probable origins.
The relative composition of the plume, i.e. the ratios of Hg vs. Carbonmonoixde (CO) and the elevated Acetonitrile (CH3CN) concentrations indicate a mixture of the emissions, typical for Asian outflow with those of biomas burning.With this method measurements over the Chinese province of Szechwan and the backward trajectories clearly indicate that southern China is a potential source area.

The whole article has been published in:
Atmospheric Chemistry and Physics; Vol. 9; Issue 6; p. 1957-1969: Slemr, F.; Ebinghaus, R.; Brenninkmeijer, C.; Hermann, M.; Kock, H.H.; Martinsson, B.; Schuck, T.; Sprung, D.; Velthoven, P.van; Zahn, A.; Ziereis, H.; "Gaseous mercury distribution in the upper troposphere and lower stratosphere observed onboard the CARIBIC passenger aircraft"

Links

Abstract CARIBIC Homepage