Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010

Detailed meteorological analyses based on observations extending through the middle atmosphere (∼ 15 to 100 km altitude) can provide key information to whole atmosphere modeli...

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Autores principales:	J. P. McCormack, V. L. Harvey, C. E. Randall, N. Pedatella, D. Koshin, K. Sato, L. Coy, S. Watanabe, F. Sassi, L. A. Holt
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f82b4f6e5662413dbc094a6bbbf332e8
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spelling	oai:doaj.org-article:f82b4f6e5662413dbc094a6bbbf332e82021-12-03T06:19:11ZIntercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–201010.5194/acp-21-17577-20211680-73161680-7324https://doaj.org/article/f82b4f6e5662413dbc094a6bbbf332e82021-12-01T00:00:00Zhttps://acp.copernicus.org/articles/21/17577/2021/acp-21-17577-2021.pdfhttps://doaj.org/toc/1680-7316https://doaj.org/toc/1680-7324<p>Detailed meteorological analyses based on observations extending through the middle atmosphere (<span class="inline-formula">∼</span> 15 to 100 <span class="inline-formula">km</span> altitude) can provide key information to whole atmosphere modeling systems regarding the physical mechanisms linking day-to-day changes in ionospheric electron density to meteorological variability near the Earth's surface. However, the extent to which independent middle atmosphere analyses differ in their representation of wave-induced coupling to the ionosphere is unclear. To begin to address this issue, we present the first intercomparison among four such analyses, JAGUAR-DAS, MERRA-2, NAVGEM-HA, and WACCMX<span class="inline-formula">+</span>DART, focusing on the Northern Hemisphere (NH) 2009–2010 winter, which includes a major sudden stratospheric warming (SSW). This intercomparison examines the altitude, latitude, and time dependences of zonal mean zonal winds and temperatures among these four analyses over the 1 December 2009 to 31 March 2010 period, as well as latitude and altitude dependences of monthly mean amplitudes of the diurnal and semidiurnal migrating solar tides, the eastward-propagating diurnal zonal wave number 3 nonmigrating tide, and traveling planetary waves associated with the quasi-5 d and quasi-2 d Rossby modes. Our results show generally good agreement among the four analyses up to the stratopause (<span class="inline-formula">∼</span> 50 <span class="inline-formula">km</span> altitude). Large discrepancies begin to emerge in the mesosphere and lower thermosphere owing to (1) differences in the types of satellite data assimilated by each system and (2) differences in the details of the global atmospheric models used by each analysis system. The results of this intercomparison provide initial estimates of uncertainty in analyses commonly used to constrain middle atmospheric meteorological variability in whole atmosphere model simulations.</p>J. P. McCormackJ. P. McCormackV. L. HarveyV. L. HarveyC. E. RandallC. E. RandallN. PedatellaD. KoshinD. KoshinK. SatoL. CoyL. CoyS. WatanabeF. SassiL. A. HoltCopernicus PublicationsarticlePhysicsQC1-999ChemistryQD1-999ENAtmospheric Chemistry and Physics, Vol 21, Pp 17577-17605 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Chemistry QD1-999
spellingShingle	Physics QC1-999 Chemistry QD1-999 J. P. McCormack J. P. McCormack V. L. Harvey V. L. Harvey C. E. Randall C. E. Randall N. Pedatella D. Koshin D. Koshin K. Sato L. Coy L. Coy S. Watanabe F. Sassi L. A. Holt Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010
description	<p>Detailed meteorological analyses based on observations extending through the middle atmosphere (<span class="inline-formula">∼</span> 15 to 100 <span class="inline-formula">km</span> altitude) can provide key information to whole atmosphere modeling systems regarding the physical mechanisms linking day-to-day changes in ionospheric electron density to meteorological variability near the Earth's surface. However, the extent to which independent middle atmosphere analyses differ in their representation of wave-induced coupling to the ionosphere is unclear. To begin to address this issue, we present the first intercomparison among four such analyses, JAGUAR-DAS, MERRA-2, NAVGEM-HA, and WACCMX<span class="inline-formula">+</span>DART, focusing on the Northern Hemisphere (NH) 2009–2010 winter, which includes a major sudden stratospheric warming (SSW). This intercomparison examines the altitude, latitude, and time dependences of zonal mean zonal winds and temperatures among these four analyses over the 1 December 2009 to 31 March 2010 period, as well as latitude and altitude dependences of monthly mean amplitudes of the diurnal and semidiurnal migrating solar tides, the eastward-propagating diurnal zonal wave number 3 nonmigrating tide, and traveling planetary waves associated with the quasi-5 d and quasi-2 d Rossby modes. Our results show generally good agreement among the four analyses up to the stratopause (<span class="inline-formula">∼</span> 50 <span class="inline-formula">km</span> altitude). Large discrepancies begin to emerge in the mesosphere and lower thermosphere owing to (1) differences in the types of satellite data assimilated by each system and (2) differences in the details of the global atmospheric models used by each analysis system. The results of this intercomparison provide initial estimates of uncertainty in analyses commonly used to constrain middle atmospheric meteorological variability in whole atmosphere model simulations.</p>
format	article
author	J. P. McCormack J. P. McCormack V. L. Harvey V. L. Harvey C. E. Randall C. E. Randall N. Pedatella D. Koshin D. Koshin K. Sato L. Coy L. Coy S. Watanabe F. Sassi L. A. Holt
author_facet	J. P. McCormack J. P. McCormack V. L. Harvey V. L. Harvey C. E. Randall C. E. Randall N. Pedatella D. Koshin D. Koshin K. Sato L. Coy L. Coy S. Watanabe F. Sassi L. A. Holt
author_sort	J. P. McCormack
title	Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010
title_short	Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010
title_full	Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010
title_fullStr	Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010
title_full_unstemmed	Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010
title_sort	intercomparison of middle atmospheric meteorological analyses for the northern hemisphere winter 2009–2010
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/f82b4f6e5662413dbc094a6bbbf332e8
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Intercomparison of middle atmospheric meteorological analyses for the Northern Hemisphere winter 2009–2010

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