Mapping of tropospheric trace gas concentration distributions from ground and aircraft by DOAS-tomography (Tom-DOAS)

摘要

An overview is given on the novel DOAS Tomography technique, its capabilities and the measurements and simulations performed so far. With this technique, column densities of one or several trace gases are measured by DOAS (Differential Optical Absorption Spectroscopy) along multiple (10-400) light paths, and reconstructed to concentration distributions by tomographic inversion. In the framework of the German BMBF project "Tom-DOAS" and the European project "Format", tomographic measurements have been conducted from the ground using Multibeam Longpath DOAS instruments and from aircraft using an AMAX (Airborne Multi AXis) DOAS instrument.