EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004
New observations from the Microwave Limb Sounder (MLS) on NASA’s Aura satellite give a detailed picture of the spring Antarctic polar vortex breakup throughout the stratosphere, with the first daily global HCl profiles providing an unprecedentedly clear view of transport in the lower stratosphere. P...
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ftnasajpl:oai:trs.jpl.nasa.gov:2014/39218 2023-05-15T13:31:51+02:00 EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 Manney, G. L. Santee, M. L. Livesey, N. J. Froidevaux, L. Read, W. G. Pumphrey, H. C. Waters, J. W. Pawson, S. 2006-05-04T17:53:04Z 631111 bytes application/pdf http://hdl.handle.net/2014/39218 en_US eng American Geophysical Union Geophysical Research Letters, Vol. 32, L12811. 05-0650 http://hdl.handle.net/2014/39218 Microwave Limb Sounder (MLS) Easth Observing System (EOS) Article 2006 ftnasajpl 2021-12-23T13:20:27Z New observations from the Microwave Limb Sounder (MLS) on NASA’s Aura satellite give a detailed picture of the spring Antarctic polar vortex breakup throughout the stratosphere, with the first daily global HCl profiles providing an unprecedentedly clear view of transport in the lower stratosphere. Poleward transport at progressively lower levels, filamentation, and mixing are detailed in MLS HCl, N2O, H2O, and O3 as the 2004 Antarctic vortex broke up from the top down in early October through late December. Improved MLS H2O data show the subvortex, below the tropical tropopause, breaking up almost simultaneously with the lower stratospheric vortex in December. Vortex remnants persisted in MLS tracers for over a month after the breakup in the midstratosphere, but no more than a week in the lower stratosphere. MLS observations show diabatic descent continuing throughout November, but weak ascent after late October in the lower stratospheric vortex core. Our results extend previous observational transport studies and show consistency with mixing and vortex evolution in meteorological analyses, and with model studies NASA/JPL Article in Journal/Newspaper Antarc* Antarctic JPL Technical Report Server Antarctic The Antarctic |
institution |
Open Polar |
collection |
JPL Technical Report Server |
op_collection_id |
ftnasajpl |
language |
English |
topic |
Microwave Limb Sounder (MLS) Easth Observing System (EOS) |
spellingShingle |
Microwave Limb Sounder (MLS) Easth Observing System (EOS) Manney, G. L. Santee, M. L. Livesey, N. J. Froidevaux, L. Read, W. G. Pumphrey, H. C. Waters, J. W. Pawson, S. EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 |
topic_facet |
Microwave Limb Sounder (MLS) Easth Observing System (EOS) |
description |
New observations from the Microwave Limb Sounder (MLS) on NASA’s Aura satellite give a detailed picture of the spring Antarctic polar vortex breakup throughout the stratosphere, with the first daily global HCl profiles providing an unprecedentedly clear view of transport in the lower stratosphere. Poleward transport at progressively lower levels, filamentation, and mixing are detailed in MLS HCl, N2O, H2O, and O3 as the 2004 Antarctic vortex broke up from the top down in early October through late December. Improved MLS H2O data show the subvortex, below the tropical tropopause, breaking up almost simultaneously with the lower stratospheric vortex in December. Vortex remnants persisted in MLS tracers for over a month after the breakup in the midstratosphere, but no more than a week in the lower stratosphere. MLS observations show diabatic descent continuing throughout November, but weak ascent after late October in the lower stratospheric vortex core. Our results extend previous observational transport studies and show consistency with mixing and vortex evolution in meteorological analyses, and with model studies NASA/JPL |
format |
Article in Journal/Newspaper |
author |
Manney, G. L. Santee, M. L. Livesey, N. J. Froidevaux, L. Read, W. G. Pumphrey, H. C. Waters, J. W. Pawson, S. |
author_facet |
Manney, G. L. Santee, M. L. Livesey, N. J. Froidevaux, L. Read, W. G. Pumphrey, H. C. Waters, J. W. Pawson, S. |
author_sort |
Manney, G. L. |
title |
EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 |
title_short |
EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 |
title_full |
EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 |
title_fullStr |
EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 |
title_full_unstemmed |
EOS Microwave Limb Sounder observations of the Antarctic polar vortex breakup in 2004 |
title_sort |
eos microwave limb sounder observations of the antarctic polar vortex breakup in 2004 |
publisher |
American Geophysical Union |
publishDate |
2006 |
url |
http://hdl.handle.net/2014/39218 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Geophysical Research Letters, Vol. 32, L12811. 05-0650 http://hdl.handle.net/2014/39218 |
_version_ |
1766021313949859840 |