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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ftmerrimackcoll:oai:scholarworks.merrimack.edu:phy_facpub-1012 2023-05-15T13:24:27+02:00 Short-Period Mesospheric Gravity Waves and Their Sources at the South Pole Mehta, Dhvanit Gerrard, Andrew J. Ebihara, Yusuke Weatherwax, Allan T. Lanzerotti, Louis J. 2017-01-01T08:00:00Z application/pdf https://scholarworks.merrimack.edu/phy_facpub/13 https://scholarworks.merrimack.edu/cgi/viewcontent.cgi?article=1012&context=phy_facpub unknown Merrimack ScholarWorks https://scholarworks.merrimack.edu/phy_facpub/13 https://scholarworks.merrimack.edu/cgi/viewcontent.cgi?article=1012&context=phy_facpub http://creativecommons.org/licenses/by/3.0/ CC-BY Physics Faculty Publications atmospheric gravity waves 3-D wave propagation vertically propagating Astrophysics and Astronomy Cosmology Relativity and Gravity text 2017 ftmerrimackcoll 2022-05-11T19:15:24Z 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. Text Amundsen-Scott South pole Merrimack College: Merrimack ScholarWorks 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 |
institution |
Open Polar |
collection |
Merrimack College: Merrimack ScholarWorks |
op_collection_id |
ftmerrimackcoll |
language |
unknown |
topic |
atmospheric gravity waves 3-D wave propagation vertically propagating Astrophysics and Astronomy Cosmology Relativity and Gravity |
spellingShingle |
atmospheric gravity waves 3-D wave propagation vertically propagating Astrophysics and Astronomy Cosmology Relativity and Gravity Mehta, Dhvanit Gerrard, Andrew J. Ebihara, Yusuke Weatherwax, Allan T. Lanzerotti, Louis J. Short-Period Mesospheric Gravity Waves and Their Sources at the South Pole |
topic_facet |
atmospheric gravity waves 3-D wave propagation vertically propagating Astrophysics and Astronomy Cosmology Relativity and Gravity |
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 |
Text |
author |
Mehta, Dhvanit Gerrard, Andrew J. Ebihara, Yusuke Weatherwax, Allan T. Lanzerotti, Louis J. |
author_facet |
Mehta, Dhvanit Gerrard, Andrew J. Ebihara, Yusuke Weatherwax, Allan T. Lanzerotti, Louis J. |
author_sort |
Mehta, Dhvanit |
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 |
Merrimack ScholarWorks |
publishDate |
2017 |
url |
https://scholarworks.merrimack.edu/phy_facpub/13 https://scholarworks.merrimack.edu/cgi/viewcontent.cgi?article=1012&context=phy_facpub |
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 |
Physics Faculty Publications |
op_relation |
https://scholarworks.merrimack.edu/phy_facpub/13 https://scholarworks.merrimack.edu/cgi/viewcontent.cgi?article=1012&context=phy_facpub |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
_version_ |
1766379725408698368 |