MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves
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 simulati...
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ftcopernicus:oai:publications.copernicus.org:acp4253 2023-05-15T13:55:27+02:00 MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves Höpfner, M. Larsen, N. Spang, R. Luo, B. P. Ma, J. Svendsen, S. H. Eckermann, S. D. Knudsen, B. Massoli, P. Cairo, F. Stiller, G. Clarmann, T. Fischer, H. 2018-06-28 application/pdf https://doi.org/10.5194/acp-6-1221-2006 https://www.atmos-chem-phys.net/6/1221/2006/ eng eng doi:10.5194/acp-6-1221-2006 https://www.atmos-chem-phys.net/6/1221/2006/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-6-1221-2006 2019-12-24T09:58:54Z 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 µm 3 /cm 3 and radii smaller than 3 µm, but are consistent with supercooled droplets of ternary H 2 SO 4 /HNO 3 /H 2 O solution (STS). Simulations indicate that homogeneous surface nucleation rates have to be reduced by three orders of magnitude to comply with the observations. Text Antarc* Antarctic Antarctic Peninsula Antarctica Copernicus Publications: E-Journals Antarctic Antarctic Peninsula Ellsworth Mountains ENVELOPE(-85.000,-85.000,-78.750,-78.750) The Antarctic Atmospheric Chemistry and Physics 6 5 1221 1230 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
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 µm 3 /cm 3 and radii smaller than 3 µm, but are consistent with supercooled droplets of ternary H 2 SO 4 /HNO 3 /H 2 O solution (STS). Simulations indicate that homogeneous surface nucleation rates have to be reduced by three orders of magnitude to comply with the observations. |
format |
Text |
author |
Höpfner, M. Larsen, N. Spang, R. Luo, B. P. Ma, J. Svendsen, S. H. Eckermann, S. D. Knudsen, B. Massoli, P. Cairo, F. Stiller, G. Clarmann, T. Fischer, H. |
spellingShingle |
Höpfner, M. Larsen, N. Spang, R. Luo, B. P. Ma, J. Svendsen, S. H. Eckermann, S. D. Knudsen, B. Massoli, P. Cairo, F. Stiller, G. Clarmann, T. Fischer, H. MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
author_facet |
Höpfner, M. Larsen, N. Spang, R. Luo, B. P. Ma, J. Svendsen, S. H. Eckermann, S. D. Knudsen, B. Massoli, P. Cairo, F. Stiller, G. Clarmann, T. Fischer, H. |
author_sort |
Höpfner, M. |
title |
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
title_short |
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
title_full |
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
title_fullStr |
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
title_full_unstemmed |
MIPAS detects Antarctic stratospheric belt of NAT PSCs caused by mountain waves |
title_sort |
mipas detects antarctic stratospheric belt of nat pscs caused by mountain waves |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-6-1221-2006 https://www.atmos-chem-phys.net/6/1221/2006/ |
long_lat |
ENVELOPE(-85.000,-85.000,-78.750,-78.750) |
geographic |
Antarctic Antarctic Peninsula Ellsworth Mountains The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Ellsworth Mountains The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-6-1221-2006 https://www.atmos-chem-phys.net/6/1221/2006/ |
op_doi |
https://doi.org/10.5194/acp-6-1221-2006 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
6 |
container_issue |
5 |
container_start_page |
1221 |
op_container_end_page |
1230 |
_version_ |
1766262071757897728 |