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EP: Extraterrestrische Physik

EP 2: CAWSES

EP 2.14: Vortrag

Freitag, 4. März 2005, 18:15–18:30, TU BH349

Towards a Better Understanding of the Energy Balance in the Upper Mesosphere and Lower Thermosphere: Contributions from the ESA ENVISAT Mission — •Martin Kaufmann¹, Martin Riese¹, Sergio Gil-Lopez², Manuel Lopez-Puertas², Bernd Funke², Gabriele Stiller³, Thomas von Clarmann³, Heinrich Bovensmann⁴, Pekka Verronen⁵, and Anne Smith⁶ — ¹Forschungszentrum Juelich, ICG-I — ²Instituto de Astrofisica de Andalucia — ³Forschungszentrum Karlsruhe, IMK — ⁴Universitaet Bremen, IUP — ⁵Finnish Meteorological Institute — ⁶National Center for atmospheric research, ACD, Boulder, USA

The mesosphere and lower thermosphere is highly sensitive to external influences from the sun as well as from the atmosphere below. Its chemical and thermal balance can change significantly due to natural influences as well as due to human-induced changes.

The combination of three instruments on board of ESA’s ENVISAT satellite give a unique possibility to improve our understanding of this region. MIPAS is able to measure temperature, CO₂, and ozone during day- and nighttime. GOMOS measures nighttime ozone, and the SCIAMACHY instrument yields temperature, daytime-ozone, atomic oxygen, and in combination with the other instruments atomic hydrogen.

In this talk we focus on ENVISAT datasets which are already existing in this altitude region. The retrieval of ozone from MIPAS/ENVISAT will be described. The quality of the dataset with respect to uncertainties in the retrieval scheme and the forward modeling are analyzed.