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Radiation balance of the tropical transition region

Hamann, Ulrich and Mayer, Bernhard (2005) Radiation balance of the tropical transition region. In: 2005 Cargese Summerschool on Understanding the role of the Upper Troposphere and Lower Stratosphere in Climate. 2005 Cargese Summerschool on Understanding the role of the Upper Troposphere and Lower Stratosphere in Climate, 2005-10-03 - 2005-10-15, Cargese, Corse (F). (Unpublished)

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Official URL: http://www.cost723.org/school/material/posters/

Abstract

Aerosols and trace gases are transported effectivly within the tropical troposphere by deep convection. The tropical convection reaches the stratosphere only in rare cases. In fact most of it ends distinctly below the stratosphere. Nevertheless the major part of mass exchange between troposphere and stratosphere takes place in the tropics. Hence processes, which influence the disposition of air in the tropical transition layer (TTL), are of crucial importance for exchange between troposphere and stratosphere. Radiative heating can enable a further ascend of air into the stratosphere. Thus the level Q=0, where the radiation budget is balanced, is a borderline for tropospheric/stratospheric exchange. Both the solar and the thermal radiation budget determine the heating rate in the TTL. In the clear sky case the heating rate is effected by absorption and emission of radiation mainly by water vapour, CO<sub>2</sub>, and O<sub>3</sub>. For cloudy sky also thermal heating of the cloud base, thermal cooling of the cloud top of optically thick clouds or thermal heating of thin cirrus clouds, as well as solar heating of the cloud top are of particular interest.

Document Type:Conference or Workshop Item (Poster)
Title:Radiation balance of the tropical transition region
Authors:
AuthorsInstitution or Email of Authors
Hamann, UlrichUNSPECIFIED
Mayer, BernhardUNSPECIFIED
Date:3 October 2005
Journal or Publication Title:2005 Cargese Summerschool on Understanding the role of the Upper Troposphere and Lower Stratosphere in Climate
Status:Unpublished
Keywords:UTLS radiative diabatic heating tropics tropopause
Event Title:2005 Cargese Summerschool on Understanding the role of the Upper Troposphere and Lower Stratosphere in Climate
Event Location:Cargese, Corse (F)
Event Type:international Conference
Event Dates:2005-10-03 - 2005-10-15
Organizer:COST 723
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 - Projekt Partikel und Zirren II (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Remote Sensing
Deposited By: Ulrich Hamann
Deposited On:22 Aug 2007
Last Modified:12 Dec 2013 20:26

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