Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa51e..04s&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SA51E-04
Astronomy and Astrophysics
Astrophysics
[0358] Atmospheric Composition And Structure / Thermosphere: Energy Deposition, [2479] Ionosphere / Solar Radiation And Cosmic Ray Effects, [7519] Solar Physics, Astrophysics, And Astronomy / Flares
Scientific paper
Measurements of flare irradiance in the X-ray and EUV spectral regions by the Solar EUV Experiment on the TIMED satellite, the X-ray Photometer System on the SORCE satellite, and the X-ray monitors on the GOES spacecraft, have been used to demonstrate the importance of different flare spectral characteristics and temporal development in causing rapid changes in the thermosphere and ionosphere. Now, observations by the EUV Variability Experiment on the Solar Dynamics Observatory (SDO), show striking variability of coronal lines in the crucial 7-37 nm region during different types and phases of flares. Very limited measurements of this spectral region were made by TIMED and SORCE, so these new observations yield insight into the magnitude and distribution of flare-driven changes in the thermosphere and ionosphere. We present results of simulations using flare spectra measured by TIMED, SORCE, and SDO as input to the NCAR Thermosphere-Ionosphere-Mesosphere-Electrodynamics General Circulation Model, and compare the results to measurements of thermosphere and ionosphere density changes.
Qian Liwen
Solomon Stanley C.
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