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Influence of Tropospheric SO2 Emissions on Particle Formation and the Stratospheric HumidityStratospheric water vapor plays an important role in the chemistry and radiation budget of the stratosphere. Throughout the last decades stratospheric water vapor levels have increased and several processes have been suggested to contribute to this trend. Here we present a mechanism that would link increasing anthropogenic SO2 emissions in southern and eastern Asia with an increase in stratospheric water. Trajectory studies and model simulations suggest that the SO2 increase results in the formation of more sulfuric acid aerosol particles in the upper tropical troposphere. As a consequence, more ice crystals of smaller size are formed in the tropical tropopause, which are lifted into the stratosphere more readily. Our model calculations suggest that such a mechanism could increase the amount of water that entered the stratosphere in the condensed phase by up to 0.5 ppmv from 1950-2000.
Document ID
20070017831
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Notholt, J.
(Bremen Univ. Germany)
Luo, B. P.
(Eidgenoessische Technische Hochschule Zurich, Switzerland)
Fueglistaler, S.
(Washington Univ. Seattle, WA, United States)
Weisenstein, D.
(Atmospheric and Environmental Research, Inc. Cambridge, MA, United States)
Rex, M.
(Institute for Polar and Marine Research Potsdam, Germany)
Lawrence, M. G.
(Max-Planck-Inst. fuer Chemie Mainz, Germany)
Bingemer, H.
(Johann-Wolfgang-Goethe-Univ. Frankfurt am Main, Germany)
Wohltmann, I.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Corti, T.
(Eidgenoessische Technische Hochschule Zurich, Switzerland)
Warneke, T.
(Bremen Univ. Germany)
vonKuhlmann, R.
(Max-Planck-Inst. fuer Chemie Mainz, Germany)
Peters, T.
(Eidgenoessische Technische Hochschule Zurich, Switzerland)
Date Acquired
August 23, 2013
Publication Date
April 9, 2005
Publication Information
Publication: Geophysical Research Letters
Volume: 32
ISSN: 0094-8276
Subject Category
Meteorology And Climatology
Funding Number(s)
CONTRACT_GRANT: NNH04CC39C
Distribution Limits
Public
Copyright
Other

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