edu.ucar.opensky::articles:24740 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T23:03:46.644041 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7902785 https://doi.org/10.7289/V5C8276M https Related Dataset #1 ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis Interhemispheric differences of mesosphere-lower thermosphere winds and tides investigated from three whole-atmosphere models and meteor radar observations 2021-09-17T00:00:00Z publication https://n2t.org/ark:/85065/d7902785 https://doi.org/10.5194/acp-21-13855-2021 Stober, G. author Kuchar, A. author Pokhotelov, D. author Liu, H. author Liu, Hanli author Schmidt, H. author Jacobi, C. author Baumgarten, K. author Brown, P. author Janches, D. author Murphy, D. author Kozlovsky, A. author Lester, M. author Belova, E. author Kero, J. author Mitchell, N. author UCAR/NCAR - Library publisher Long-term and continuous observations of mesospheric-lower thermospheric winds are rare, but they are important to investigate climatological changes at these altitudes on timescales of several years, covering a solar cycle and longer. Such long time series are a natural heritage of the mesosphere-lower thermosphere climate, and they are valuable to compare climate models or long-term runs of general circulation models (GCMs). Here we present a climatological comparison of wind observations from six meteor radars at two conjugate latitudes to validate the corresponding mean winds and atmospheric diurnal and semidiurnal tides from three GCMs, namely the Ground-to-Topside Model of Atmosphere and Ionosphere for Aeronomy (GAIA), the Whole Atmosphere Community Climate Model Extension (Specified Dynamics) (WACCM-X(SD)), and the Upper Atmosphere ICOsahedral Non-hydrostatic (UA-ICON) model. Our results indicate that there are interhemispheric differences in the seasonal characteristics of the diurnal and semidiurnal tide. There are also some differences in the mean wind climatologies of the models and the observations. Our results indicate that GALA shows reasonable agreement with the meteor radar observations during the winter season, whereas WACCM-X(SD) shows better agreement with the radars for the hemispheric zonal summer wind reversal, which is more consistent with the meteor radar observations. The free-running UA-ICON tends to show similar winds and tides compared to WACCM-X(SD). UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation