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The SPICAM experiment onboard Mars Express has accumulated during the last decade a wealth of observations that has permitted a detailed characterization of the atmospheric composition and activity from the near-surface up to above the exosphere. The SPICAM climatology is one of the longest assembled to date by an instrument in orbit around Mars, offering the opportunity to study the fate of major...
The O2(a1Δg) dayglow at the 1.27µm band on Mars is produced by the solar UV photolysis of ozone and quenched in collisions with CO2. The SPICAM IR instrument onboard the Mars Express orbiter observes the O2(a1Δg) emission in the Martian atmosphere starting from 2004. We present a continuous set of O2(a1Δg) dayglow intensities from nadir measurements for six Martian years from the end of MY26 to MY32...
The 1.27-μm O 2 (a 1 Δ g ) dayglow on Mars is a product of the ozone photolysis by solar UV radiation. The intensity of the O 2 (a 1 Δ g ) emission rate depends on ozone concentration, atmospheric density and kinetic parameters of involved photochemical reactions. In turn, the distribution of ozone is sensitive to the vertical and spatial distribution...
We present observations of the O 2 (a 1 Δ g ) nightglow at 1.27μm on Mars using the SPICAM IR spectrometer onboard of the Mars Express orbiter. In contrast to the O 2 (a 1 Δ g ) dayglow that results from the ozone photodissociation, the O 2 (a 1 Δ g ) nightglow is a product of the recombination of O atoms formed by CO 2 ...
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