Some Results of Ground-based High-resolution Spectroscopy of the Martian Atmosphere
نویسنده
چکیده
Table 1. Chemical composition of the Martian atmosphere. Spacecraft data are in black, ground-based spectroscopy is in red, spectroscopy from Earthorbiting observatories in blue. Species Mixing ratio Instrument CO2 0.955 GS N2 0.027 Viking/MS Ar 0.016 Viking/MS Ne 2.5 ppm Viking/MS Kr 0.3 ppm Viking/MS Xe 80 ppb Viking/MS H 2.7×10 cm Mariner/UVS O 0.01-0.02 Mariner/UVS O2 (1.2−2)×10 FPI CO 8×10 FTS H2O 0−70 pr. μm GS O3 0−60 μm-atm Mariner/UVS He 10 ppm EUVE H2 17 ppm FUSE HDO/H2O 1.7×10 CFHT/FTS HD 12 ppb HST/GHRS H2O2 0−40 ppb IRTF/TEXES CH4 10 ppb CFHT/FTS H2S < 100 ppb Mariner/IRIS HCl < 2 ppb KPNO/FTS H2CO < 3 ppb KPNO/FTS SO2 < 1 ppb IRTF/TEXES NO < 1.7 ppb IRTF/TEXES GS is grating spectrometer, MS mass spectrometer, FPI Fabry-Perot interferometer, FTS Fourier transform spectrometer.
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