Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves
Atmospheric gravity waves (GWs) are essential for the dynamics of the middle atmosphere. Recent studies have shown that these waves are also important for the thermosphere/ionosphere (T/I) system. Via vertical coupling, GWs can significantly influence the mean state of the T/I system. However, the p...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://resolver.tudelft.nl/uuid:54846674-fd14-486d-ba7c-23720d213aaf https://doi.org/10.5194/angeo-36-425-2018 |
id |
fttudelft:oai:tudelft.nl:uuid:54846674-fd14-486d-ba7c-23720d213aaf |
---|---|
record_format |
openpolar |
spelling |
fttudelft:oai:tudelft.nl:uuid:54846674-fd14-486d-ba7c-23720d213aaf 2024-04-28T08:02:59+00:00 Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves Trinh, Quang Thai (author) Ern, Manfred (author) Doornbos, E.N. (author) Preusse, Peter (author) Riese, Martin (author) 2018-03-19 http://resolver.tudelft.nl/uuid:54846674-fd14-486d-ba7c-23720d213aaf https://doi.org/10.5194/angeo-36-425-2018 en eng http://www.scopus.com/inward/record.url?scp=85044212627&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:54846674-fd14-486d-ba7c-23720d213aaf Annales Geophysicae: atmospheres, hydrospheres and space sciences--0992-7689--9599d44d-6e22-48f3-84d4-c50459f10dc0 https://doi.org/10.5194/angeo-36-425-2018 © 2018 Quang Thai Trinh, Manfred Ern, E.N. Doornbos, Peter Preusse, Martin Riese journal article 2018 fttudelft https://doi.org/10.5194/angeo-36-425-2018 2024-04-09T23:45:06Z Atmospheric gravity waves (GWs) are essential for the dynamics of the middle atmosphere. Recent studies have shown that these waves are also important for the thermosphere/ionosphere (T/I) system. Via vertical coupling, GWs can significantly influence the mean state of the T/I system. However, the penetration of GWs into the T/I system is not fully understood in modeling as well as observations. In the current study, we analyze the correlation between GW momentum fluxes observed in the middle atmosphere (30-90ĝ€km) and GW-induced perturbations in the T/I. In the middle atmosphere, GW momentum fluxes are derived from temperature observations of the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) satellite instrument. In the T/I, GW-induced perturbations are derived from neutral density measured by instruments on the Gravity field and Ocean Circulation Explorer (GOCE) and CHAllenging Minisatellite Payload (CHAMP) satellites. We find generally positive correlations between horizontal distributions at low altitudes (i.e., below 90ĝ€km) and horizontal distributions of GW-induced density fluctuations in the T/I (at 200ĝ€km and above). Two coupling mechanisms are likely responsible for these positive correlations: (1) fast GWs generated in the troposphere and lower stratosphere can propagate directly to the T/I and (2) primary GWs with their origins in the lower atmosphere dissipate while propagating upwards and generate secondary GWs, which then penetrate up to the T/I and maintain the spatial patterns of GW distributions in the lower atmosphere. The mountain-wave related hotspot over the Andes and Antarctic Peninsula is found clearly in observations of all instruments used in our analysis. Latitude-longitude variations in the summer midlatitudes are also found in observations of all instruments. These variations and strong positive correlations in the summer midlatitudes suggest that GWs with origins related to convection also propagate up to the T/I. Different processes which likely influence ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Delft University of Technology: Institutional Repository Annales Geophysicae 36 2 425 444 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
description |
Atmospheric gravity waves (GWs) are essential for the dynamics of the middle atmosphere. Recent studies have shown that these waves are also important for the thermosphere/ionosphere (T/I) system. Via vertical coupling, GWs can significantly influence the mean state of the T/I system. However, the penetration of GWs into the T/I system is not fully understood in modeling as well as observations. In the current study, we analyze the correlation between GW momentum fluxes observed in the middle atmosphere (30-90ĝ€km) and GW-induced perturbations in the T/I. In the middle atmosphere, GW momentum fluxes are derived from temperature observations of the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) satellite instrument. In the T/I, GW-induced perturbations are derived from neutral density measured by instruments on the Gravity field and Ocean Circulation Explorer (GOCE) and CHAllenging Minisatellite Payload (CHAMP) satellites. We find generally positive correlations between horizontal distributions at low altitudes (i.e., below 90ĝ€km) and horizontal distributions of GW-induced density fluctuations in the T/I (at 200ĝ€km and above). Two coupling mechanisms are likely responsible for these positive correlations: (1) fast GWs generated in the troposphere and lower stratosphere can propagate directly to the T/I and (2) primary GWs with their origins in the lower atmosphere dissipate while propagating upwards and generate secondary GWs, which then penetrate up to the T/I and maintain the spatial patterns of GW distributions in the lower atmosphere. The mountain-wave related hotspot over the Andes and Antarctic Peninsula is found clearly in observations of all instruments used in our analysis. Latitude-longitude variations in the summer midlatitudes are also found in observations of all instruments. These variations and strong positive correlations in the summer midlatitudes suggest that GWs with origins related to convection also propagate up to the T/I. Different processes which likely influence ... |
format |
Article in Journal/Newspaper |
author |
Trinh, Quang Thai (author) Ern, Manfred (author) Doornbos, E.N. (author) Preusse, Peter (author) Riese, Martin (author) |
spellingShingle |
Trinh, Quang Thai (author) Ern, Manfred (author) Doornbos, E.N. (author) Preusse, Peter (author) Riese, Martin (author) Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves |
author_facet |
Trinh, Quang Thai (author) Ern, Manfred (author) Doornbos, E.N. (author) Preusse, Peter (author) Riese, Martin (author) |
author_sort |
Trinh, Quang Thai (author) |
title |
Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves |
title_short |
Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves |
title_full |
Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves |
title_fullStr |
Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves |
title_full_unstemmed |
Satellite observations of middle atmosphere-Thermosphere vertical coupling by gravity waves |
title_sort |
satellite observations of middle atmosphere-thermosphere vertical coupling by gravity waves |
publishDate |
2018 |
url |
http://resolver.tudelft.nl/uuid:54846674-fd14-486d-ba7c-23720d213aaf https://doi.org/10.5194/angeo-36-425-2018 |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
http://www.scopus.com/inward/record.url?scp=85044212627&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:54846674-fd14-486d-ba7c-23720d213aaf Annales Geophysicae: atmospheres, hydrospheres and space sciences--0992-7689--9599d44d-6e22-48f3-84d4-c50459f10dc0 https://doi.org/10.5194/angeo-36-425-2018 |
op_rights |
© 2018 Quang Thai Trinh, Manfred Ern, E.N. Doornbos, Peter Preusse, Martin Riese |
op_doi |
https://doi.org/10.5194/angeo-36-425-2018 |
container_title |
Annales Geophysicae |
container_volume |
36 |
container_issue |
2 |
container_start_page |
425 |
op_container_end_page |
444 |
_version_ |
1797574214523289600 |