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Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling

Here we compare the global‐scale morphology of Earth's the Far‐Ultraviolet (FUV) emissions observed by NASA's Global‐scale Observations of Limb and Disk (GOLD) mission to those modeled using the Global Airglow (GLOW) code with atmospheric parameters provided by Thermosphere‐Ionosphere‐Elec...

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Autores principales: Greer, K. R., Eastes, Richard, Solomon, Stan, McClintock, William, Burns, Alan, Rusch, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7380304/
https://www.ncbi.nlm.nih.gov/pubmed/32728510
http://dx.doi.org/10.1029/2020JA027810
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author Greer, K. R.
Eastes, Richard
Solomon, Stan
McClintock, William
Burns, Alan
Rusch, David
author_facet Greer, K. R.
Eastes, Richard
Solomon, Stan
McClintock, William
Burns, Alan
Rusch, David
author_sort Greer, K. R.
collection PubMed
description Here we compare the global‐scale morphology of Earth's the Far‐Ultraviolet (FUV) emissions observed by NASA's Global‐scale Observations of Limb and Disk (GOLD) mission to those modeled using the Global Airglow (GLOW) code with atmospheric parameters provided by Thermosphere‐Ionosphere‐Electrodynamics General Circulation Model (TIEGCM). The O (5)S oxygen (135.6 nm) and N(2) Lyman‐Birge‐Hopfield (LBH) emissions are observed over the Western hemisphere every 30 min by the GOLD instrument. The FUV brightness of the thermosphere‐ionosphere is expected to vary in systemic ways with respect to geophysical parameters, solar energy input from above, and terrestrial weather input from below. In this paper we examine the O (5)S oxygen emission and the N(2) LBH emission brightnesses with local time, latitude, season, tides, geomagnetic activity, and solar activity based on GOLD observations and GLOW modeling. Early GOLD observations indicate that the model effectively reproduces the brightness variations with local time and latitude but is biased low in magnitude. However, the TIEGCM is unable to accurately represent the extraordinary nighttime equatorial ionization anomaly observed by GOLD. It is also expected from these results that the signal from geomagnetic storms may obscure tidal signals.
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spelling pubmed-73803042020-07-27 Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling Greer, K. R. Eastes, Richard Solomon, Stan McClintock, William Burns, Alan Rusch, David J Geophys Res Space Phys Research Articles Here we compare the global‐scale morphology of Earth's the Far‐Ultraviolet (FUV) emissions observed by NASA's Global‐scale Observations of Limb and Disk (GOLD) mission to those modeled using the Global Airglow (GLOW) code with atmospheric parameters provided by Thermosphere‐Ionosphere‐Electrodynamics General Circulation Model (TIEGCM). The O (5)S oxygen (135.6 nm) and N(2) Lyman‐Birge‐Hopfield (LBH) emissions are observed over the Western hemisphere every 30 min by the GOLD instrument. The FUV brightness of the thermosphere‐ionosphere is expected to vary in systemic ways with respect to geophysical parameters, solar energy input from above, and terrestrial weather input from below. In this paper we examine the O (5)S oxygen emission and the N(2) LBH emission brightnesses with local time, latitude, season, tides, geomagnetic activity, and solar activity based on GOLD observations and GLOW modeling. Early GOLD observations indicate that the model effectively reproduces the brightness variations with local time and latitude but is biased low in magnitude. However, the TIEGCM is unable to accurately represent the extraordinary nighttime equatorial ionization anomaly observed by GOLD. It is also expected from these results that the signal from geomagnetic storms may obscure tidal signals. John Wiley and Sons Inc. 2020-06-05 2020-06 /pmc/articles/PMC7380304/ /pubmed/32728510 http://dx.doi.org/10.1029/2020JA027810 Text en © 2020. The Authors. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Research Articles
Greer, K. R.
Eastes, Richard
Solomon, Stan
McClintock, William
Burns, Alan
Rusch, David
Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling
title Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling
title_full Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling
title_fullStr Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling
title_full_unstemmed Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling
title_short Variations of Lower Thermospheric FUV Emissions Based on GOLD Observations and GLOW Modeling
title_sort variations of lower thermospheric fuv emissions based on gold observations and glow modeling
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7380304/
https://www.ncbi.nlm.nih.gov/pubmed/32728510
http://dx.doi.org/10.1029/2020JA027810
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