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Mars Analysis Correction Data Assimilation (MACDA): MGS/TES v1.0 Reference Run Data

Update Frequency: Not Planned
Latest Data Update: 2022-01-05
Status: Completed
Online Status: ONLINE
Publication State: Citable
Publication Date: 2022-01-19
DOI Publication Date: 2022-01-24
Download Stats: last 12 months
Dataset Size: 64 Files | 17GB


This dataset contains basic gridded atmospheric and surface variables for the planet Mars over three martian years (a martian year is 1.88 terrestrial years), produced as a reference run in association with the Mars Analysis Correction Data Assimilation (MACDA) v1.0 re-analysis. Each file in the dataset spans 30 martian mean solar days (sols) during the science mapping phase of the National Aeronautics and Space Administration's (NASA) Mars Global Surveyor (MGS) spacecraft, between May 1999 and August 2004.

This dataset is a reference run produced by re-analysis of Thermal Emission Spectrometer (TES) retrievals of only total dust opacities, using the MACDA scheme in a Mars global circulation model (MGCM). This reference dataset, therefore, should be used in association with the full re-analysis of TES retrievals of nadir thermal profiles and total dust opacities - see linked dataset.

The MGCM used is the UK spectral version of the model developed by the Laboratoire de Météorologie Dynamique in Paris, France.

MACDA is a collaboration between the University of Oxford and The Open University in the UK.

Citable as:  University of Oxford; The Open University; Montabone, L.; Lewis, S.R.; Read, P.L. (2022): Mars Analysis Correction Data Assimilation (MACDA): MGS/TES v1.0 Reference Run Data. NERC EDS Centre for Environmental Data Analysis, 24 January 2022. doi:10.5285/acdfa050673c46d49d6a35bfa482762b.
Abbreviation: Not defined
Keywords: Mars, Martian, MGCM


Previous Info:
No news update for this record
Previously used record identifiers:
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Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data provided to the Centre for Envirnomental Data Analysis (CEDA) by the project team members in December 2021. Mars Global Surveyor/ Thermal Emission Spectrometer retrievals have been provided by Michael D. Smith (National Aeronautics and Space Administration, Goddard Space Flight Center, Greenbelt, MD, USA) to the University of Oxford in 2005.

File Format:
Data are CF-compliant netCDF

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Computation Element: 1

Title 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,
Input Description None
Output Description None
Software Reference None
Output Description


  • units: K
  • standard_name: air_temperature
  • var_id: temp
  • long_name: Atmospheric Temperature
  • names: air_temperature, Atmospheric Temperature
  • units: kg m-2
  • long_name: Carbon dioxide ice
  • standard_name: surface_frozen_carbon_dioxide_amount
  • var_id: co2ice
  • names: Carbon dioxide ice, surface_frozen_carbon_dioxide_amount
  • units: 1
  • long_name: Martian year
  • var_id: MY
  • names: Martian year
  • units: m s-1
  • standard_name: northward_wind
  • long_name: Meridional wind component
  • var_id: vwind
  • names: northward_wind, Meridional wind component
  • units: degrees
  • long_name: Solar longitude
  • standard_name: solar_longitude
  • var_id: Ls
  • names: solar_longitude, Solar longitude
  • units: Pa
  • standard_name: surface_air_pressure
  • long_name: Surface pressure
  • var_id: psurf
  • names: surface_air_pressure, Surface pressure
  • units: K
  • standard_name: surface_temperature
  • long_name: Surface temperature
  • var_id: tsurf
  • names: surface_temperature, Surface temperature
  • units: 1
  • long_name: Total dust optical thickness
  • standard_name: atmosphere_optical_thickness_due_to_dust_dry_aerosol
  • var_id: coldust
  • names: Total dust optical thickness, atmosphere_optical_thickness_due_to_dust_dry_aerosol
  • units: m s-1
  • standard_name: eastward_wind
  • long_name: Zonal wind component
  • var_id: uwind
  • names: eastward_wind, Zonal wind component
  • units: 1
  • var_id: lev
  • long_name: model sigma levels
  • standard_name: atmosphere_sigma_coordinate
  • names: model sigma levels, atmosphere_sigma_coordinate

Co-ordinate Variables

  • units: degrees_north
  • standard_name: latitude
  • long_name: latitude
  • var_id: lat
  • names: latitude
  • units: degrees_east
  • standard_name: longitude
  • long_name: longitude
  • var_id: lon
  • names: longitude
  • long_name: time
  • standard_name: time
  • var_id: time
  • names: time
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