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Fig. 9

image

EXES spectrum of Mars around the disk center between 1387.9 and 1389.2 cm-1 (black line). Models: green: H2O = 150 ppmv, HDO = 250 ppbv; red (best fit): H2O = 275 ppmv, HDO = 400 ppbv; blue: H2O = 400 ppmv, HDO = 550 ppbv. The surface pressure is 7.5 mb and the surface brightness temperature is 280 K. The airmass is 1.0. Synthetic spectra have been multiplied by the terrestrial absorption to fit the EXES data.

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