Science with SOIR

Since its arrival at Venus, SOIR has been fully operational and has already delivered high-quality scientific data and results.

As SOIR is a high-resolution spectrometer operating in the infrared region (2.2-4.3 Ám), it can detect several species of high interest to understand the Venus atmosphere, such as its main constituent CO2, but also some key trace gases, such as CO, H2O/HDO, HCl, or HF.


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A warm layer in Venus’ cryosphere and high-altitude measurements of HF, HCl, H2O and HDO

First observation of 628 CO2 isotopologue band at 3.3 μm in the atmosphere
of Venus by solar occultation from Venus Express

Composition of the Venus mesosphere measured by SOIR on board Venus Express

Line parameters for the 01111–00001 band of 12C16O18O from SOIR measurements of the Venus atmosphere

H2O and HDO profiling in the upper venusian atmosphere by SOIR on Venus Express

First observations of SO2 above Venus’ clouds by means of Solar Occultation in the Infrared




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