Global Spatial and Climatological Dependencies of the Hydrogen Geocorona Inferred From TIMED/GUVI Measurements of Lyman α Radiance

Details Global Spatial and Climatological Dependencies of the Hydrogen Geocorona Inferred From TIMED/GUVI Measurements of Lyman α Radiance Global Spatial and Climatological Dependencies of the Hydrogen Geocorona Inferred From TIMED/GUVI Measurements of Lyman α Radiance

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa53a..03w&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA53A-03

Mathematics

Logic

[0310] Atmospheric Composition And Structure / Airglow And Aurora, [0328] Atmospheric Composition And Structure / Exosphere, [0355] Atmospheric Composition And Structure / Thermosphere: Composition And Chemistry

Scientific paper

Space-based measurements of geocoronal Lyman-α (Ly-α) emission at 121.6 nm, created through multiple scattering of solar Ly-α photons by atomic hydrogen, offer a valuable means of inferring the hydrogen abundance, [H], in the terrestrial thermosphere and exosphere on a global, long-term basis. We present initial results from an analysis of Ly-α radiance measurements acquired along the earth's limb from 2002-2007 by the Global UltraViolet Imager (GUVI) onboard the TIMED spacecraft. Based on statistical data analysis, we derive simple climatological models of the emission dependence on line-of-sight position (altitude, geographic, and geomagnetic coordinates), sun-earth geometry (zenith angle and season), and solar activity. These results are compared to forward model predictions of Ly-α radiance in order to improve understanding of geocoronal physics as well as Ly-α radiation transport. Model sensitivities to input parameters are assessed in terms of their implications for [H] estimation from the GUVI limb-scan data, and several case-by-case data/model comparisons of single scans will be used as examples.

Affiliated with

Also associated with

No associations

Rating

Global Spatial and Climatological Dependencies of the Hydrogen Geocorona Inferred From TIMED/GUVI Measurements of Lyman α Radiance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Global Spatial and Climatological Dependencies of the Hydrogen Geocorona Inferred From TIMED/GUVI Measurements of Lyman α Radiance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Global Spatial and Climatological Dependencies of the Hydrogen Geocorona Inferred From TIMED/GUVI Measurements of Lyman α Radiance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1506268