Short-period mesospheric gravity waves and their sources at the South Pole
The sourcing locations and mechanisms for short-period, upward-propagating gravity waves at high polar latitudes remain largely unknown. Using all-sky imager data from the Amundsen–Scott South Pole Station, we determine the spatial and temporal characteristics of 94 observed small-scale waves in 3 a...
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ftdoajarticles:oai:doaj.org/article:dedfe226868145a09453cc6b64f451e5 2023-05-15T13:24:26+02:00 Short-period mesospheric gravity waves and their sources at the South Pole D. Mehta A. J. Gerrard Y. Ebihara A. T. Weatherwax L. J. Lanzerotti 2017-01-01T00:00:00Z https://doi.org/10.5194/acp-17-911-2017 https://doaj.org/article/dedfe226868145a09453cc6b64f451e5 EN eng Copernicus Publications http://www.atmos-chem-phys.net/17/911/2017/acp-17-911-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-17-911-2017 https://doaj.org/article/dedfe226868145a09453cc6b64f451e5 Atmospheric Chemistry and Physics, Vol 17, Iss 2, Pp 911-919 (2017) Physics QC1-999 Chemistry QD1-999 article 2017 ftdoajarticles https://doi.org/10.5194/acp-17-911-2017 2022-12-31T01:05:37Z The sourcing locations and mechanisms for short-period, upward-propagating gravity waves at high polar latitudes remain largely unknown. Using all-sky imager data from the Amundsen–Scott South Pole Station, we determine the spatial and temporal characteristics of 94 observed small-scale waves in 3 austral winter months in 2003 and 2004. These data, together with background atmospheres from synoptic and/or climatological empirical models, are used to model gravity wave propagation from the polar mesosphere to each wave's source using a ray-tracing model. Our results provide a compelling case that a significant proportion of the observed waves are launched in several discrete layers in the tropopause and/or stratosphere. Analyses of synoptic geopotentials and temperatures indicate that wave formation is a result of baroclinic instability processes in the stratosphere and the interaction of planetary waves with the background wind fields in the tropopause. These results are significant for defining the influences of the polar vortex on the production of these small-scale, upward-propagating gravity waves at the highest polar latitudes. Article in Journal/Newspaper Amundsen-Scott South pole Directory of Open Access Journals: DOAJ Articles Amundsen Scott South Pole Station ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott South Pole Station ENVELOPE(139.273,139.273,-89.998,-89.998) Austral South Pole Atmospheric Chemistry and Physics 17 2 911 919 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 D. Mehta A. J. Gerrard Y. Ebihara A. T. Weatherwax L. J. Lanzerotti Short-period mesospheric gravity waves and their sources at the South Pole |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The sourcing locations and mechanisms for short-period, upward-propagating gravity waves at high polar latitudes remain largely unknown. Using all-sky imager data from the Amundsen–Scott South Pole Station, we determine the spatial and temporal characteristics of 94 observed small-scale waves in 3 austral winter months in 2003 and 2004. These data, together with background atmospheres from synoptic and/or climatological empirical models, are used to model gravity wave propagation from the polar mesosphere to each wave's source using a ray-tracing model. Our results provide a compelling case that a significant proportion of the observed waves are launched in several discrete layers in the tropopause and/or stratosphere. Analyses of synoptic geopotentials and temperatures indicate that wave formation is a result of baroclinic instability processes in the stratosphere and the interaction of planetary waves with the background wind fields in the tropopause. These results are significant for defining the influences of the polar vortex on the production of these small-scale, upward-propagating gravity waves at the highest polar latitudes. |
format |
Article in Journal/Newspaper |
author |
D. Mehta A. J. Gerrard Y. Ebihara A. T. Weatherwax L. J. Lanzerotti |
author_facet |
D. Mehta A. J. Gerrard Y. Ebihara A. T. Weatherwax L. J. Lanzerotti |
author_sort |
D. Mehta |
title |
Short-period mesospheric gravity waves and their sources at the South Pole |
title_short |
Short-period mesospheric gravity waves and their sources at the South Pole |
title_full |
Short-period mesospheric gravity waves and their sources at the South Pole |
title_fullStr |
Short-period mesospheric gravity waves and their sources at the South Pole |
title_full_unstemmed |
Short-period mesospheric gravity waves and their sources at the South Pole |
title_sort |
short-period mesospheric gravity waves and their sources at the south pole |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/acp-17-911-2017 https://doaj.org/article/dedfe226868145a09453cc6b64f451e5 |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(139.273,139.273,-89.998,-89.998) |
geographic |
Amundsen Scott South Pole Station Amundsen-Scott Amundsen-Scott South Pole Station Austral South Pole |
geographic_facet |
Amundsen Scott South Pole Station Amundsen-Scott Amundsen-Scott South Pole Station Austral South Pole |
genre |
Amundsen-Scott South pole |
genre_facet |
Amundsen-Scott South pole |
op_source |
Atmospheric Chemistry and Physics, Vol 17, Iss 2, Pp 911-919 (2017) |
op_relation |
http://www.atmos-chem-phys.net/17/911/2017/acp-17-911-2017.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-17-911-2017 https://doaj.org/article/dedfe226868145a09453cc6b64f451e5 |
op_doi |
https://doi.org/10.5194/acp-17-911-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
2 |
container_start_page |
911 |
op_container_end_page |
919 |
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1766379681374797824 |