Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation
An Advanced Mesosphere Temperature Mapper and other instruments at the Arctic Lidar Observatory for Middle Atmosphere Research in Norway (69.3°N) and at Logan and Bear Lake Observatory in Utah (42°N) are used to demonstrate a new method for quantifying gravity wave (GW) pseudo-momentum fluxes accomp...
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ftutahsudc:oai:digitalcommons.usu.edu:ail_pubs-1008 2023-05-15T15:08:20+02:00 Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation Fritts, David C. Pautet, Pierre-Dominique Bossert, Katrina Taylor, Michael J. Williams, Bifford P. Iimura, Hiroyuki Yuan, Tao Mitchell, Nicholas J. Stober, Gunter American Geophysical Union 2016-12-16T08:00:00Z application/pdf https://digitalcommons.usu.edu/ail_pubs/9 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1008&context=ail_pubs unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/ail_pubs/9 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1008&context=ail_pubs Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. PDM Publications Atmospheric Sciences text 2016 ftutahsudc 2022-03-07T20:40:00Z An Advanced Mesosphere Temperature Mapper and other instruments at the Arctic Lidar Observatory for Middle Atmosphere Research in Norway (69.3°N) and at Logan and Bear Lake Observatory in Utah (42°N) are used to demonstrate a new method for quantifying gravity wave (GW) pseudo-momentum fluxes accompanying spatially and temporally localized GW packets. The method improves on previous airglow techniques by employing direct characterization of the GW temperature perturbations averaged over the OH airglow layer and correlative wind and temperature measurements to define the intrinsic GW properties with high confidence. These methods are applied to two events, each of which involves superpositions of GWs having various scales and character. In each case, small-scale GWs were found to achieve transient, but very large, momentum fluxes with magnitudes varying from ~60 to 940 m2 s−2, which are ~1–2 decades larger than mean values. Quantification of the spatial and temporal variations of GW amplitudes and pseudo-momentum fluxes may also enable assessments of the total pseudo-momentum accompanying individual GW packets and of the potential for secondary GW generation that arises from GW localization. We expect that the use of this method will yield key insights into the statistical forcing of the mesosphere and lower thermosphere by GWs, the importance of infrequent large-amplitude events, and their effects on GW spectral evolution with altitude. Text Arctic Utah State University: DigitalCommons@USU Arctic Norway |
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Utah State University: DigitalCommons@USU |
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unknown |
topic |
Atmospheric Sciences |
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Atmospheric Sciences Fritts, David C. Pautet, Pierre-Dominique Bossert, Katrina Taylor, Michael J. Williams, Bifford P. Iimura, Hiroyuki Yuan, Tao Mitchell, Nicholas J. Stober, Gunter Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
topic_facet |
Atmospheric Sciences |
description |
An Advanced Mesosphere Temperature Mapper and other instruments at the Arctic Lidar Observatory for Middle Atmosphere Research in Norway (69.3°N) and at Logan and Bear Lake Observatory in Utah (42°N) are used to demonstrate a new method for quantifying gravity wave (GW) pseudo-momentum fluxes accompanying spatially and temporally localized GW packets. The method improves on previous airglow techniques by employing direct characterization of the GW temperature perturbations averaged over the OH airglow layer and correlative wind and temperature measurements to define the intrinsic GW properties with high confidence. These methods are applied to two events, each of which involves superpositions of GWs having various scales and character. In each case, small-scale GWs were found to achieve transient, but very large, momentum fluxes with magnitudes varying from ~60 to 940 m2 s−2, which are ~1–2 decades larger than mean values. Quantification of the spatial and temporal variations of GW amplitudes and pseudo-momentum fluxes may also enable assessments of the total pseudo-momentum accompanying individual GW packets and of the potential for secondary GW generation that arises from GW localization. We expect that the use of this method will yield key insights into the statistical forcing of the mesosphere and lower thermosphere by GWs, the importance of infrequent large-amplitude events, and their effects on GW spectral evolution with altitude. |
author2 |
American Geophysical Union |
format |
Text |
author |
Fritts, David C. Pautet, Pierre-Dominique Bossert, Katrina Taylor, Michael J. Williams, Bifford P. Iimura, Hiroyuki Yuan, Tao Mitchell, Nicholas J. Stober, Gunter |
author_facet |
Fritts, David C. Pautet, Pierre-Dominique Bossert, Katrina Taylor, Michael J. Williams, Bifford P. Iimura, Hiroyuki Yuan, Tao Mitchell, Nicholas J. Stober, Gunter |
author_sort |
Fritts, David C. |
title |
Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
title_short |
Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
title_full |
Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
title_fullStr |
Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
title_full_unstemmed |
Quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
title_sort |
quantifying gravity wave momentum fluxes with mesosphere temperature mappers and correlative instrumentation |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2016 |
url |
https://digitalcommons.usu.edu/ail_pubs/9 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1008&context=ail_pubs |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Publications |
op_relation |
https://digitalcommons.usu.edu/ail_pubs/9 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1008&context=ail_pubs |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. |
op_rightsnorm |
PDM |
_version_ |
1766339712871563264 |