Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Sudden Stratospheric Warming"”.
-
Influence of eddy-eddy interactions and tropical wind variability on sudden stratospheric warming formation
… (EEI) and tropical wind variability on sudden stratospheric warming (SSW) formation in an idealized atmospheric GCM. Chapter 2 introduces a method to produce split and displacement SSWs in comparable amounts using either wavenumber 1 or 2 tropospheric heating perturbations. The results …
-
Dynamical Influences of Sudden Stratospheric Warmings on Surface Climate
Abstract The stratospheric winter polar vortex consists of strong westerly winds; this winter flow regime can undergo a complete breakdown during sudden stratospheric warming events. In the Northern Hemisphere these events are often accompanied by the descent of anomalous flow regimes which can …
-
INVESTIGATION OF TRACER GAS VARIABILITY FROM OBSERVATIONS AND MODELS
… North Hemisphere polar region, the influence of sudden stratospheric warming (SSW) on AIRS CO2 was investigated. The Eliassen-Palm flux divergence was negative before the SSW; as a result, the westerly wind in the stratosphere decreased. During the SSW, the polar zonal mean wind switched to …
-
Role of Planetary Wave-Tide-Gravity Wave Interactions In Whole Atmosphere Coupling
… simulations, with a particular emphasis on sudden stratospheric warming (SSW) events. The development of a new multi-static meteor radar at 30ºS, named Chilean Observation Network De MeteOr Radars (CONDOR), provides a key dataset for the present studies. Wind validation of this new radar …
-
Understanding Middle Atmospheric Composition Variability from the Solar Occultation for Ice Experiment Instrument and Other Datasets
… the middle atmosphere. Dynamic events such as Sudden Stratospheric Warmings (SSW) impact the temperature gradient and the zonal mean wind pattern in the stratopause. Descent events triggered by SSWs result in enhanced transport of species from the lower thermosphere to the stratosphere. …
-
Long-term investigation of the lunar tide in the equatorial electrojet during stratospheric sudden warmings
… and the ionosphere are the so-called stratospheric sudden warming (SSW) events that occur usually during northern winters and result in an increase in the polar stratospheric temperature and a reversal of the circumpolar winds. While the phenomenon of SSW is confined to the northern …