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Die Erwärmungsrate in der tropischen Tropopausenregion

Hamann, Ulrich (2010) Die Erwärmungsrate in der tropischen Tropopausenregion. Dissertation, LMU München.

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Official URL: http://edoc.ub.uni-muenchen.de/11768/

Abstract

The major part of the movement of air masses from the troposphere to the stratosphere takes place in the tropics. The conveyed air mass is transported with the Brewer-Dobson circulation polwards and therefore influences the global stratospheric composition. An important cause variable for the transport of air through the tropical tropopause layer (TTL) is the radiative heating, which is investigated in this work. The influence of trace gases, temperature, and cloudiness on the heating rate is quantified, especially the effect of the overlap of several cloud layers is discussed. The heating rate in the tropics is simulated for one year. Regional differences of the heating rate profile appear between convective and stably stratified regions. By means of trace gas concentrations, temperature, and heating rates it is determined that an enhanced transport of air through the TTL took place between January and April 2007. The comparison with previous works shows that accurate input data sets of trace gases, temperature, and cloudiness and exact methods for the simulation of the radiative transfer are indispensable for modeling of the heating rate with the required accuracy.

Document Type:Thesis (Dissertation)
Title:Die Erwärmungsrate in der tropischen Tropopausenregion
Authors:
AuthorsInstitution or Email of Authors
Hamann, UlrichUNSPECIFIED
Date:30 April 2010
Number of Pages:208
Status:Published
Keywords:radiative heating rate, tropical tropopause region, radiative transfer, cloudiness
Institution:LMU München
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Remote Sensing
Deposited By: Jana Freund
Deposited On:09 Dec 2010 10:55
Last Modified:09 Dec 2010 11:22

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