Storm time meridional wind perturbations in the equatorial upper thermosphere
| Autor: | Sarita Venkatraman, G. D. Earle, R. A. Haaser, Jeffrey Klenzing, R. L. Davidson, Roderick A. Heelis |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Geomagnetic storm
Storm Zonal and meridional Geophysics Atmospheric sciences Physics::Geophysics Latitude Earth's magnetic field Space and Planetary Science Physics::Space Physics North Magnetic Pole Astrophysics::Solar and Stellar Astrophysics Thermosphere Ionosphere Physics::Atmospheric and Oceanic Physics Geology |
| Zdroj: | Journal of Geophysical Research: Space Physics. 118:2756-2764 |
| ISSN: | 2169-9380 |
| DOI: | 10.1002/jgra.50299 |
| Popis: | [1] We present observations from the Coupled Ion Neutral Dynamics Investigation (CINDI) of storm time meridional winds in the neutral atmosphere near the magnetic equator at 400 km altitude. Observations near the magnetic equator in the southern geographic hemisphere are dominated by energy inputs from the southern Polar Regions that produce south to north (equatorward) wind perturbations to accompany perturbations in the neutral density and temperature. In one exceptional case, when observations are made near midnight and the north magnetic pole rotates through the midnight sector, north to south (poleward) meridional wind perturbations are observed just south of the magnetic equator. Accompanying perturbations in the neutral density on the dayside and the nightside are consistent with observed increases in the ion temperature and inferred increases in the neutral temperature in accord with hydrostatic equilibrium. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text