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MIPAS observations of CO in the upper troposphere and lower stratosphere

Bernd Funke(1), Manuel López-Puertas(1), Maya García-Comas(1), Diego Bermejo-Pantaleón(1), Norbert Glatthor(2), Gabriele Stiller(2) and Thomas von Clarmann(2)

(1) Instituto de Astrofísica de Andalucía (CSIC), C Bajo de Huétor 50, 18008 Granada, Spain
(2) Institut für Meteorologie und Klimaforschung, Postfach 3640, 76021 Karlsruhe, Germany

Abstract

Carbon monoxide (CO) is produced at the surface by incomplete combustion processes related to industry, traffic, or biomass burning. In the troposphere, CO acts as an ozone precursor and is an important contributor to the oxidizing capacity as the main sink of the hydroxyl radical. Due to its tropospheric lifetime of about 2 months, CO is the most frequently used tracer to infer the transport of polluted air masses and troposphere-stratosphere exchange (TSE) processes. Vertically resolved CO distributions in the upper troposphere and lower stratosphere (UTLS) have been derived from MIPAS observations at IMK/IAA. Here, we analyse this dataset with respect to transport patterns of polluted air masses and uplift mechanisms (focusing on inter-continental transport and trapping in the Asian monsoon antizyclone) including their temporal and spatial variability, and TSE processes.

 

Workshop presentation