| Popis: |
Thermal infrared spectra taken by the Emirates Mars Infrared Spectrometer (EMIRS) enable the retrieval of atmospheric temperature profiles from near the surface to ~40 km, and the column abundance of dust aerosols, water ice clouds, and water vapor. A constrained linear inversion retrieval routine that includes multiple scattering has been developed and optimized for this purpose. The unique, high-altitude orbit of the Emirates Mars Mission (EMM) enables sampling of all local times over a wide range of latitudes and longitudes over a short sub-seasonal timescale of less than two weeks. Observations from the Science Phase of EMM cover most of Mars Year (MY) 36, beginning at Ls=49° and now extend into the aphelion season of MY 37. In this presentation we provide a brief overview of the EMIRS retrievals followed by a description of the seasonal and diurnal variations of the retrieved water vapor column abundance. |
