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Interhemispheric comparison of mesosphere / lower thermosphere winds from GAIA, WACCM-X and ICON-UA simulations and meteor radar observations at mid- and polar latitudes

Stober, G. and Kuchar, Ales and Pokhotelov, Dimitry and Liu, Huixin and Liu, Hanli and Schmidt, Hauke and Jacobi, C. and Brown, Peter and Janchez, Diego and Murphy, Damian J. and Kozlovsky, Alexander and Lester, M. and Belova, Evgenia and Kero, Johan (2021) Interhemispheric comparison of mesosphere / lower thermosphere winds from GAIA, WACCM-X and ICON-UA simulations and meteor radar observations at mid- and polar latitudes. EGU General Assembly 2021, 19–30 April 2021, Vienna. doi: 10.5194/egusphere-egu21-9191.

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Official URL: https://doi.org/10.5194/egusphere-egu21-9191


In this study, we cross-compare the nudged models Ground-to-topside model of Atmosphere and Ionosphere for Aeronomy (GAIA) and Whole Atmosphere Community Climate Model Extended Version (Specified dynamics) ( WACCM-X(SD)), a free-running version of Upper Atmosphere ICOsahedral Non-hydrostatic (ICON-UA) with six meteor radars located at conjugate polar and mid-latitudes. Mean winds, diurnal and semidiurnal tidal amplitudes and phases were obtained from the radar observations at the mesosphere and lower thermosphere (MLT) and compared to the GAIA, WACCM-X(SD), and ICON-UA data for similar locations applying a harmonized diagnostic. Our results indicate that GAIA zonal and meridional winds show a good agreement to the meteor radars during the winter season on both hemispheres, whereas WACCM-X(SD) and ICON-UA seem to reproduce better the summer zonal wind reversal. However, the mean winds also exhibit some deviation in the seasonal characteristic concerning the meteor radar measurements, which are attributed to the gravity wave parameterizations implemented in the models. All three models tend to reflect the seasonality of diurnal tidal amplitudes, but show some dissimilarities in tidal phases. We also found systematic interhemispheric differences in the seasonal characteristic of semidiurnal amplitudes and phases. The free-running ICON-UA apparently shows most of these interhemispheric differences, whereas WACCM-X(SD) and GAIA trend to have better agreement of the semidiurnal tidal variability in the northern hemisphere.

Item URL in elib:https://elib.dlr.de/142428/
Document Type:Conference or Workshop Item (Poster)
Title:Interhemispheric comparison of mesosphere / lower thermosphere winds from GAIA, WACCM-X and ICON-UA simulations and meteor radar observations at mid- and polar latitudes
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Stober, G.UNSPECIFIEDhttps://orcid.org/0000-0002-7909-6345UNSPECIFIED
Kuchar, AlesInstitute for Meteorology, Universität Leipzighttps://orcid.org/0000-0002-3672-6626UNSPECIFIED
Pokhotelov, DimitryUNSPECIFIEDhttps://orcid.org/0000-0002-3712-0597UNSPECIFIED
Liu, HuixinUNSPECIFIEDhttps://orcid.org/0000-0001-7073-4366UNSPECIFIED
Schmidt, HaukeMPI für Meteorologie, HamburgUNSPECIFIEDUNSPECIFIED
Jacobi, C.Universität Leipzighttps://orcid.org/0000-0002-7878-0110UNSPECIFIED
Brown, PeterUniversity of Western OntarioUNSPECIFIEDUNSPECIFIED
Janchez, DiegoNASA Goddard Space Flight CenterUNSPECIFIEDUNSPECIFIED
Murphy, Damian J.Australian Antarctic Division, Hobart, Tasmaniahttps://orcid.org/0000-0003-1738-5560UNSPECIFIED
Kozlovsky, AlexanderSodankylä Geophysical Observatory, Finlandhttps://orcid.org/0000-0003-1468-7600UNSPECIFIED
Lester, M.University Leicester, United Kingdomhttps://orcid.org/0000-0001-7353-5549UNSPECIFIED
Belova, EvgeniaSwedish Institute of Space Physics (IRF), Kiruna, Swedenhttps://orcid.org/0000-0002-6698-321XUNSPECIFIED
Kero, JohanSwedish Institute of Space Physics (IRF), Kiruna, Swedenhttps://orcid.org/0000-0002-2177-6751UNSPECIFIED
Date:26 April 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Middle/upper atmosphere, simulations, meteor radars
Event Title:EGU General Assembly 2021
Event Location:Vienna
Event Type:international Conference
Event Dates:19–30 April 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Solar-Terrestrial Coupling Processes
Deposited By: Pokhotelov, Dimitry
Deposited On:09 Jun 2021 08:17
Last Modified:09 Jun 2021 08:17

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