Reconstructing the weather on Mars at the time of the MERs and Beagle 2 landings
Article first published online: 5 OCT 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 19, October 2006
How to Cite
2006), Reconstructing the weather on Mars at the time of the MERs and Beagle 2 landings, Geophys. Res. Lett., 33, L19202, doi:10.1029/2006GL026565., , , and (
- Issue published online: 5 OCT 2006
- Article first published online: 5 OCT 2006
- Manuscript Accepted: 23 AUG 2006
- Manuscript Revised: 14 AUG 2006
- Manuscript Received: 11 APR 2006
 We reconstruct the temperature, wind and density structure of the atmosphere on Mars from the surface to 120 km altitude at the time of the landing of the two NASA Mars Exploration Rovers (MER), and ESA's “Beagle 2.” This reconstruction is based on an assimilation of temperature and dust opacity observations from the Thermal Emission Spectrometer aboard the Mars Global Surveyor spacecraft into a general circulation model of the Martian atmosphere and, for the case of the MERs, on retrievals of temperature and density profiles from accelerometer data. For all landers, the reconstruction of the atmospheric state is compared with the climatological state predicted by the European Mars Climate Database (EMCD) for two different prescribed dust scenarios, with added large- and small-scale variability. This comparison exhibits good agreement for all three landers within the modeled variability, confirming a posteriori the accuracy of the climate forecasts by the EMCD.