Computation
MACDA TES retrieval processing and Mars global circulation model assimiation
Abstract
TES retrievals of temperature and total (i.e. column-integrated) dust opacities are assimilated into the Mars global circulation model that is in use at the University of Oxford and at The Open University in the UK (UK-LMD-MGCM), covering almost three complete martian seasonal cycles, from 141 degrees solar longitude in martian Year (MY) 24 through 82 degrees solar longitude in MY 27 (Note, however, that the reference run associated to the "MACDA v1.0" full assimilation of TES temperature and total dust opacities includes only the assimilation of TES total dust opacities). The assimilation scheme makes use of a sequential procedure known as the Analysis Correction scheme (Lorenc et al., 1991), a form of successive corrections method which has proved simple and robust under martian conditions, even during the less-than-ideal MGS aerobraking period (Lewis et al., 2007). The UK-LMD-MGCM uses a spectral dynamical core and a shared Martian physics package that was largely developed by the Laboratoire de Meteorologie Dynamique at the Universite' Pierre et Marie Curie in Paris (France).
Information on TES retrievals:
Smith, M.D., 2004. Interannual variability in TES atmospheric observations of Mars during 1999-2003. Icarus, 167, 148-165.
Information on the Mars global circulation model used:
Forget et al., 1999. Improved general circulation models of the Martian atmosphere from the surface to above 80 km. J. Geophys. Res. 104, E10, 24155-24176
Information on the Analysis Correction scheme:
Lorenc et al., 1991. The Meteorological Office analysis correction data assimilation scheme. Q. J. R Meteorol. Soc. 117, 59-89
Information on the Mars Analysis Correction Data Assimilation scheme:
Lewis et al., 2007. Assimilation of thermal emission spectrometer atmospheric data during the Mars Global Surveyor aerobraking period. Icarus 192, 327-347.
Information on MGS/TES MACDA validation (please note that this paper is now slightly out-of-date):
Montabone et al., 2006. Validation of martian meteorological data assimilation for MGS/TES using radio occultation measurements. Icarus 185, 113-132.
Information on MACDA v1.0 re-analysis:
Montabone et al., 2014. The Mars Analysis Correction Data Assimilation (MACDA) Dataset V1.0. Geoscience Data J. Vol. 1, Issue 2, https://doi.org/10.1002/gdj3.13
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