First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica
Unique Fe lidar observations in May 2014 at McMurdo, combined with Aura-Microwave Limb Sounder measurements, lead to a new discovery that the amplitudes of 4 day and 2.5 day planetary waves (PWs) grow rapidly from 1-2 K at 100 km to over 10 K at 110 km. This report is also the first observation of s...
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Online Access: | https://doi.org/10.1002/2017GL075641 |
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ftncar:oai:drupal-site.org:articles_21162 2023-09-05T13:12:21+02:00 First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica Lu, Xian (author) Chu, Xinzhao (author) Chen, Cao (author) Nguyen, Vu (author) Smith, Anne K. (author) 2017-10-28 https://doi.org/10.1002/2017GL075641 en eng Geophysical Research Letters--Geophys. Res. Lett.--00948276 articles:21162 ark:/85065/d7g163dq doi:10.1002/2017GL075641 Copyright 2017 American Geophysical Union. article Text 2017 ftncar https://doi.org/10.1002/2017GL075641 2023-08-14T18:47:56Z Unique Fe lidar observations in May 2014 at McMurdo, combined with Aura-Microwave Limb Sounder measurements, lead to a new discovery that the amplitudes of 4 day and 2.5 day planetary waves (PWs) grow rapidly from 1-2 K at 100 km to over 10 K at 110 km. This report is also the first observation of short-period (1-5 days) eastward propagating PWs from 30 km all the way to 110 km. The Specified Dynamics-Whole Atmosphere Community Climate Model reproduces the observed three dominant peaks of amplitudes in temperature and coherent vertical phase structures. The data-model comparison indicates a possible mechanism: After PWs originated from the stratosphere dissipate along the critical level, the surviving waves are amplified by in situ instability in the mesosphere and lower thermosphere, resulting in the second (third) peak in geopotential (temperature). This third peak in temperature explains the PW amplitude growth from 100 to 110 km. 1443726 Article in Journal/Newspaper Antarc* Antarctica OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Geophysical Research Letters 44 20 10,744 10,753 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Unique Fe lidar observations in May 2014 at McMurdo, combined with Aura-Microwave Limb Sounder measurements, lead to a new discovery that the amplitudes of 4 day and 2.5 day planetary waves (PWs) grow rapidly from 1-2 K at 100 km to over 10 K at 110 km. This report is also the first observation of short-period (1-5 days) eastward propagating PWs from 30 km all the way to 110 km. The Specified Dynamics-Whole Atmosphere Community Climate Model reproduces the observed three dominant peaks of amplitudes in temperature and coherent vertical phase structures. The data-model comparison indicates a possible mechanism: After PWs originated from the stratosphere dissipate along the critical level, the surviving waves are amplified by in situ instability in the mesosphere and lower thermosphere, resulting in the second (third) peak in geopotential (temperature). This third peak in temperature explains the PW amplitude growth from 100 to 110 km. 1443726 |
author2 |
Lu, Xian (author) Chu, Xinzhao (author) Chen, Cao (author) Nguyen, Vu (author) Smith, Anne K. (author) |
format |
Article in Journal/Newspaper |
title |
First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica |
spellingShingle |
First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica |
title_short |
First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica |
title_full |
First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica |
title_fullStr |
First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica |
title_full_unstemmed |
First observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter Antarctica |
title_sort |
first observations of short-period eastward propagating planetary waves from the stratosphere to the lower thermosphere (110 km) in winter antarctica |
publishDate |
2017 |
url |
https://doi.org/10.1002/2017GL075641 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Geophysical Research Letters--Geophys. Res. Lett.--00948276 articles:21162 ark:/85065/d7g163dq doi:10.1002/2017GL075641 |
op_rights |
Copyright 2017 American Geophysical Union. |
op_doi |
https://doi.org/10.1002/2017GL075641 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
20 |
container_start_page |
10,744 |
op_container_end_page |
10,753 |
_version_ |
1776199940151705600 |