edu.ucar.opensky::articles:22452 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:40:14.699469 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7ff3wdx https://doi.org/10.5065/D67M06Q6 https Related Dataset #1 TIMEGCM neutral temperatures, horizontal winds and geopotential heights from ~100 to 450 km for 2013 SSW (simulation with Lunar M2 & N2 forcing & WACCM-X/GEOS5 nudging) Simulation and observation of lunar tide effect on high-latitude, mesospheric and lower thermospheric winds during the 2013 sudden stratospheric warming event 2019-02-01T00:00:00Z publication https://n2t.org/ark:/85065/d7ff3wdx https://doi.org/10.1029/2018JA025476 Wu, Qian author Ward, W. author Kristoffersen, S. author Maute, Astrid author Liu, Jing author UCAR/NCAR - Library publisher We investigate the high-latitude mesospheric and lower thermospheric winds during the 2013 sudden stratospheric warming event using ground-based optical Doppler remote sensing observations of the OH and O (557.7 nm) emission from Eureka (80 degrees N, 86 degrees W) and Thermosphere Ionosphere Mesosphere Electrodynamics-General Circulation Model (TIME-GCM) simulations. Simulations with and without lunar tidal forcing of the TIME-GCM were performed. It has been found that the additional lunar tidal forcing only impacts slightly the semidiurnal tidal amplitude and phase at Eureka. The TIME-GCM simulations still have noticeable discrepancies in the mean winds and the semidiurnal tidal amplitude and phase compared to the observations. The semidiurnal tidal phase shift during the stratospheric warming event may be associated with the sudden stratospheric warming related zonal mean wind reversal, which is similar to the seasonal change in the zonal mean wind from winter to summer. Accordingly, during the reversal, more modes of the semidiurnal tide propagate to the mesosphere, changing the phase of the semidiurnal tide. 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 2019 American Geophysical Union. None eng geoscientificInformation