loading page

Response of GOLD Retrieved Thermospheric Temperatures to Geomagnetic Activities of Varying Magnitudes
  • +5
  • Fazlul I Laskar,
  • Richard W Eastes,
  • Mihail V. Codrescu,
  • Joseph S. Evans,
  • Alan G. Burns,
  • Wenbin Wang,
  • William E. McClintock,
  • Xuguang Cai
Fazlul I Laskar
Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USA

Corresponding Author:[email protected]

Author Profile
Richard W Eastes
Laboratory for Atmospheric and Space Physics
Author Profile
Mihail V. Codrescu
NOAA-Space Weather Prediction Center
Author Profile
Joseph S. Evans
Computational Physics, Incorporated
Author Profile
Alan G. Burns
National Center for Atmospheric Research (UCAR)
Author Profile
Wenbin Wang
Author Profile
William E. McClintock
Laboratory for Atmospheric and Space Physics
Author Profile
Xuguang Cai
Author Profile


Global-scale Observations of Limb and Disk (GOLD) disk measurements of far ultraviolet molecular nitrogen band emissions are used to retrieve temperatures (T$_{disk}$), which are representative of lower thermospheric altitudes. The present investigation studies the response of lower thermospheric temperatures to geomagnetic activities of varying magnitudes. In this study, it has been observed that T$_{disk}$ increases over all latitudes in response to enhanced geomagnetic activity. The increase in temperature is proportional to the strength of the geomagnetic activity and is greater at higher latitudes. Temperature enhancements vary from 10s to 100s of Kelvins from low- to mid-latitudes. Local time behavior shows that pre-noon enhancements in temperatures, during relatively stronger geomagnetic activities, are greater compared to afternoon, which can be attributed to the combined action of daytime dynamics and geomagnetic forcing. This study thus demonstrates the utility of GOLD T$_{disk}$ measurements investigating the effects of dynamical and external forcings in the thermosphere.