Comparative study between ground-based observations and NAVGEM-HA analysis data in the mesosphere and lower thermosphere region
dc.bibliographicCitation.firstPage | 11979 | eng |
dc.bibliographicCitation.issue | 20 | eng |
dc.bibliographicCitation.lastPage | 12010 | eng |
dc.bibliographicCitation.volume | 20 | eng |
dc.contributor.author | Stober, Gunter | |
dc.contributor.author | Baumgarten, Kathrin | |
dc.contributor.author | McCormack, John P. | |
dc.contributor.author | Brown, Peter | |
dc.contributor.author | Czarnecki, Jerry | |
dc.date.accessioned | 2021-08-19T09:53:45Z | |
dc.date.available | 2021-08-19T09:53:45Z | |
dc.date.issued | 2020 | |
dc.description.abstract | Recent studies have shown that day-to-day variability of the migrating semidiurnal solar (SW2) tide within the mesosphere and lower thermosphere (MLT) is a key driver of anomalies in the thermosphere-ionosphere system. Here, we study the variability in both the amplitude and phase of SW2 using meteor radar wind and lidar temperature observations at altitudes of 75-110 km as well as wind and temperature output from the Navy Global Environmental Model-High Altitude (NAVGEM-HA), a high-altitude meteorological analysis system. Application of a new adaptive spectral filter technique to both local radar wind observations and global NAVGEM-HA analyses offers an important cross-validation of both data sets and makes it possible to distinguish between migrating and non-migrating tidal components, which is difficult using local measurements alone. Comparisons of NAVGEM-HA, meteor radar and lidar observations over a 12-month period show that the meteorological analyses consistently reproduce the seasonal as well as day-to-day variability in mean winds, mean temperatures and SW2 features from the ground-based observations. This study also examines in detail the day-to-day variability in SW2 during two sudden stratospheric warming, events that have been implicated in producing ionospheric anomalies. During this period, both meteor radar and NAVGEM-HA winds show a significant phase shift and amplitude modulation, but no signs of coupling to the lunar tide as previous studies have suggested. Overall, these findings demonstrate the benefit of combining global high-altitude meteorological analyses with ground-based observations of the MLT region to better understand the tidal variability in the atmosphere. © 2020 Author(s). | eng |
dc.description.sponsorship | Leibniz_Fonds | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/6527 | |
dc.identifier.uri | https://doi.org/10.34657/5574 | |
dc.language.iso | eng | eng |
dc.publisher | Katlenburg-Lindau : EGU | eng |
dc.relation.doi | https://doi.org/10.5194/acp-20-11979-2020 | |
dc.relation.essn | 1680-7324 | |
dc.relation.ispartofseries | Atmospheric chemistry and physics 20 (2020), Nr. 20 | eng |
dc.relation.issn | 1680-7316 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject | semidiurnal solar (SW2) | eng |
dc.subject | mesosphere and lower thermosphere (MLT) | eng |
dc.subject | Navy Global Environmental Model-High Altitude (NAVGEM-HA) | eng |
dc.subject.ddc | 550 | eng |
dc.title | Comparative study between ground-based observations and NAVGEM-HA analysis data in the mesosphere and lower thermosphere region | eng |
dc.type | article | eng |
dc.type | Text | eng |
dcterms.bibliographicCitation.journalTitle | Atmospheric chemistry and physics | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IAP | eng |
wgl.subject | Geowissenschaften | eng |
wgl.type | Zeitschriftenartikel | eng |
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