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Mipas Detects Antarctic Stratospheric Belt of Nat Pscs Caused by Mountain Waves : Volume 6, Issue 5 (20/04/2006)

By Höpfner, M.

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Book Id: WPLBN0003994392
Format Type: PDF Article :
File Size: Pages 10
Reproduction Date: 2015

Title: Mipas Detects Antarctic Stratospheric Belt of Nat Pscs Caused by Mountain Waves : Volume 6, Issue 5 (20/04/2006)  
Author: Höpfner, M.
Volume: Vol. 6, Issue 5
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2006
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Spang, R., Svendsen, S. H., Larsen, N., Massoli, P., Fischer, H., Höpfner, M.,...Stiller, G. (2006). Mipas Detects Antarctic Stratospheric Belt of Nat Pscs Caused by Mountain Waves : Volume 6, Issue 5 (20/04/2006). Retrieved from http://worldlibrary.org/


Description
Description: Forschungszentrum Karlsruhe, Institut für Meteorologie und Klimaforschung, Karlsruhe, Germany. Space borne infrared limb emission measurements by the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) reveal the formation of a belt of polar stratospheric clouds (PSCs) of nitric acid trihydrate (NAT) particles over Antarctica in mid-June 2003. By mesoscale microphysical simulations we show that this sudden onset of NAT PSCs was caused by heterogeneous nucleation on ice in the cooling phases of large-amplitude stratospheric mountain waves over the Antarctic Peninsula and the Ellsworth Mountains. MIPAS observations of PSCs before this event show no indication for the presence of NAT clouds with volume densities larger than about 0.3 µm3/cm3 and radii smaller than 3 µm, but are consistent with supercooled droplets of ternary H2SO4/HNO3/H2O solution (STS). Simulations indicate that homogeneous surface nucleation rates have to be reduced by three orders of magnitude to comply with the observations.

Summary
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves

 

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