Satellite measurements of tropospheric composition

Satellite measurements are now routinely being used for meteorological
applications. More recently, space-borne observations of tropospheric
composition also became possible, promising global data sets of a range of
trace gases involved in tropospheric chemistry. These measurements are
ideally suited for model validation but also for global monitoring of
pollution and transport of pollutants.

The basis for satellite observations is remote sensing, in this case in the
UV and visible spectral range. Atmospheric concentrations of trace species
are derived using a combination of absorption spectroscopy and radiative
modelling. The latter is based on assumptions on the state of the atmosphere
and the surface which have an impact on the results. This dependence on a
priori information complicates the interpretation of satellite measurements
and needs to be taken into account when comparing model and measurement

In this presentation, and overview will be given on the methods used to
retrieve tropospheric amounts of trace gases from space-borne UV-visible
measurements, on the potential and limitations of these data sets and on




13:30 h


Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg


Andreas Richter, AWI, Bremen


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