Dependence of Mercurian Atmospheric Column Abundance Estimations on Surface-Reflectance Modeling

Details Dependence of Mercurian Atmospheric Column Abundance Estimations on Surface-Reflectance Modeling Dependence of Mercurian Atmospheric Column Abundance Estimations on Surface-Reflectance Modeling

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997stin...9818614d&link_type=abstract

Icarus: Article No. IS975725, vol. 128, p. 75

Physics

Mercury Atmosphere, Potassium, Sodium, Reflectance, Abundance, Atmospheric Models, Surface Roughness, Radiative Transfer, Brightness, Atmospheric Chemistry, Planetary Surfaces, Emission Spectra

Scientific paper

Column abundance estimates of sodium, and analogously, potassium, in Mercury's exosphere are strongly correlated to the surface reflection model used to calibrate the spectral data and the surface reflection model incorporated into the atmospheric radiative transfer solution. Depending on the surface reflection model parameters used, there can be differences in calibration factors of up to +/- 30% and differences in estimated column abundance of up to +/- 35%. Although the surface reflectance may not be used in the calibration of spacecraft measurements, the interaction between the reflected surface light and the atmospheric brightness remains important.

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