Mathematics – Logic
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..509s&link_type=abstract
European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a
Mathematics
Logic
Scientific paper
Abstract The Mars Limited Area Model (MLAM) has been jointly developed by the Helsinki University and the Finnish Meteorological Institute to study mesoscale phenomena in the Martian Atmosphere [1]. It is based on the hydro-static dynamical core of the HIgh Resolution Limited Area Model (HIRLAM), an operational weather prediction model-analysis sys-tem used by several European countries. To support the Phoenix mission to high Martian latitudes, the model was optimized in its grid definition and the way carbon dioxide and water ice development is treated. The MLAM based simulations support the analysis of the data from the Phoenix Meteorological station [2] which contains besides a LIDAR for ice/dust particle observations three atmospheric temperature sensors along a 1.2m high boom, a telltale to provide information about wind direction and speed, and 3 capacitive pressure sensors from FMI. The pressure sensors are similar to those success-fully flown on Cassini/Huygens. showed a surprisingly good agreement with the first pressure, temperature and wind data received from the instruments. The results of more detailed studies will be presented, covering several months of data and conclusions drawn from the model comparisons. Figures 2 and 3 show MLAM simulations of the polar region at the time of the Phoenix landing, both at midnight and noon. The landing site is in the upper left quadrant, marked by a small white circle. References [1] Järvenoja, S., Kauhanen, J. and Savijärvi, H. (2003) HIRLAM Newsletter (43), 179-184 [2] Michelangeli, D.V., et al. (2006) Proc. of the 4th intern.conference on Mars polar science and exploration, pp 8014.
Harri Ari-Matti
Kahanpää Henrik
Kauhanen Janne
Merikallio S.
Polkko Jouni
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