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Fig. 11

image

EXES spectrum of Mars in the southern region between 1387.9 and 1389.2 cm-1 (black line). Models: green: H2O = 0 ppmv, HDO = 0 ppbv; red (best fit): H2O = 125 ppmv, HDO = 150 ppbv; blue: H2O = 300 ppmv, HDO = 300 ppbv. The surface pressure is 5 mb and the surface brightness temperature is 235K. The airmass is 1.5. Synthetic spectra have been multiplied by the terrestrial absorption to fit the EXES data.

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