Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis
Satellite observations of polar stratospheric clouds (PSCs) over Antarctica in June 2003 revealed small nitric acid trihydrate (NAT) particles forming suddenly along the vortex edge. Models suggest the trigger was mountain waves over the Antarctic Peninsula (AP) forming ice for NAT nucleation. We te...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20100027355 2023-05-15T14:03:46+02:00 Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis Eckermann, S. D. Hoffmann, L. Hoepfner, M. Wu, D. L. Alexander, M. J. Unclassified, Unlimited, Publicly available January 2009 http://ntrs.nasa.gov/search.jsp?R=20100027355 unknown http://ntrs.nasa.gov/search.jsp?R=20100027355 Copyright Other Sources 46 Geophysical Research Letters; Volume 36 AD-A522192 2009 ftnasantrs 2012-04-21T23:20:40Z Satellite observations of polar stratospheric clouds (PSCs) over Antarctica in June 2003 revealed small nitric acid trihydrate (NAT) particles forming suddenly along the vortex edge. Models suggest the trigger was mountain waves over the Antarctic Peninsula (AP) forming ice for NAT nucleation. We test this hypothesis by analyzing perturbations in stratospheric radiances from the Atmospheric Infrared Sounder (AIRS). AIRS data show mountain waves over the AP on 10-14 June, with no resolved wave activity before or after. Peak wave temperature amplitudes derived from independent 40 hPa channels all return values of 10-12 K, in agreement with values used to model this NAT event. These observations support a NAT wake from a small region of mountain wave activity over the AP as the source of this circumpolar NAT outbreak. Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Antarctica NASA Technical Reports Server (NTRS) Antarctic Antarctic Peninsula The Antarctic |
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46 Eckermann, S. D. Hoffmann, L. Hoepfner, M. Wu, D. L. Alexander, M. J. Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis |
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description |
Satellite observations of polar stratospheric clouds (PSCs) over Antarctica in June 2003 revealed small nitric acid trihydrate (NAT) particles forming suddenly along the vortex edge. Models suggest the trigger was mountain waves over the Antarctic Peninsula (AP) forming ice for NAT nucleation. We test this hypothesis by analyzing perturbations in stratospheric radiances from the Atmospheric Infrared Sounder (AIRS). AIRS data show mountain waves over the AP on 10-14 June, with no resolved wave activity before or after. Peak wave temperature amplitudes derived from independent 40 hPa channels all return values of 10-12 K, in agreement with values used to model this NAT event. These observations support a NAT wake from a small region of mountain wave activity over the AP as the source of this circumpolar NAT outbreak. |
format |
Other/Unknown Material |
author |
Eckermann, S. D. Hoffmann, L. Hoepfner, M. Wu, D. L. Alexander, M. J. |
author_facet |
Eckermann, S. D. Hoffmann, L. Hoepfner, M. Wu, D. L. Alexander, M. J. |
author_sort |
Eckermann, S. D. |
title |
Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis |
title_short |
Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis |
title_full |
Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis |
title_fullStr |
Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis |
title_full_unstemmed |
Antarctic NAT PSC Belt of June 2003: Observational Validation of the Mountain Wave Seeding Hypothesis |
title_sort |
antarctic nat psc belt of june 2003: observational validation of the mountain wave seeding hypothesis |
publishDate |
2009 |
url |
http://ntrs.nasa.gov/search.jsp?R=20100027355 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=20100027355 |
op_rights |
Copyright |
_version_ |
1766274615123902464 |