This dataset collection contains basic gridded atmospheric and surface variables for the planet Mars over three Martian years (a martian year is 1.88 terrestrial years), as produced by data assimilation of spacecraft observations. Each file in the dataset spans 30 martian mean solar days (sols) during the science mapping phase of the National Aeronautics and Space Administrations's (NASA) Mars Global Surveyor (MGS) spacecraft, between May 1999 and August 2004. The dataset collection was produced by the re-analysis of Thermal Emission Spectrometer (TES) retrievals of nadir thermal profiles and total dust opacities, using the Mars Analysis Correction Data Assimilation (MACDA) scheme in a Mars global circulation model (MGCM). The MGCM used the UK spectral version of the model developed by the Laboratoire de Météorologie Dynamique (LMD) in Paris, France. MACDA was a collaboration between the University of Oxford and The Open University in the UK.

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.

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), as produced by data assimilation of spacecraft observations. Each file in the dataset spans 30 martian mean solar days (sols) during the science mapping phase of the National Aeronautics and Space Administrations's (NASA) Mars Global Surveyor (MGS) spacecraft, between May 1999 and August 2004. The dataset is produced by the re-analysis of Thermal Emission Spectrometer (TES) retrievals of nadir thermal profiles and total dust opacities, using the Mars Analysis Correction Data Assimilation (MACDA) scheme in a Mars global circulation model (MGCM). The MGCM used is the UK spectral version of the model developed by the Laboratoire de Meteorologie Dynamique in Paris, France. MACDA is a collaboration between the University of Oxford and The Open University in the UK.

This dataset contains 268 files of basic gridded atmospheric and surface data for the planet Mars, each covering a period of 30 sols (Martian mean solar days). The fields are produced by assimilating retrieved atmospheric quantities using the Analysis Correction (AC) scheme in the UK spectral version (Oxford University and The Open University) of the Mars Planetary Climate Model (Mars-PCM), which is maintained by the Laboratoire de Météorologie Dynamique at Sorbonne Université in Paris, France. Observations are taken from the Mars Global Surveyor/Thermal Emission Spectrometer (MGS/TES), the Mars Odyssey/Thermal Emission Imaging System (ODY/THEMIS), and the Mars Reconnaissance Orbiter/Mars Climate Sounder (MRO/MCS) instruments. Assimilated MGS/TES retrievals include nadir thermal profiles below approximately 40 km altitude and column dust optical depth values. Assimilated ODY/THEMIS retrievals include column dust optical depth values. Assimilated MRO/MCS retrievals include limb thermal profiles and dust extinction profiles below approximately 80 km altitude, as well as estimates of column dust optical depth values. The dataset covers 12 Martian years (MY), from MY 24 through MY 35 (i.e. from July 1998 through February 2021). Each file contains 30 sols, and each sol contains variables at 12 times. TES, THEMIS, and MCS retrievals are assimilated separately, with no overlap. Several 30-sol periods at the beginning of MY 24 contain no available observations; in these cases the model is run with no assimilation (free run). The file name and the "assimilation_run_type" global attribute indicate which observing system is assimilated in each file: MGS/TES, ODY/THEMIS, MRO/MCS, MRO/MCS_nodust (only thermal profiles, no dust extinction profiles nor column dust optical depth values), MRO/MCS_nodustprof (only thermal profiles and column dust optical depth values, no dust extinction profiles), or free-run (i.e. no assimilated observations because retrievals are not available).

This dataset includes measurements of protodune and barchan height, length and migration on both Mars and Earth. Earth measurements were calculated from high resolution Terrestrial Laser Scans (TLS) of bedforms migrating through time in coastal and desert regions. Raw point cloud data can be found at Nield et al. (2023a; 2023b; 2025a; 2025b). Mars measurements were calculated from High-Resolution Imaging Science Experiment (HiRISE) imagery. Nield, J.M., Baddock, M.C., Wiggs, G.F.S. (2023). Surface and Meteorological Data of Protodune Dynamics at Helga's Interdune Area, Gobabeb, Namib Desert, Namibia on 13th September 2022. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/10203f53-7471-4b8e-8177-74aef66bb432 Nield, J.M., Wiggs, G.F.S., Baddock, M.C. (2023). Surface and Meteorological Data of Protodune Dynamics at Brancaster Beach, UK on 12th August 2016. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/26eacb3a-982b-4d5c-bb48-9bc4de4dfb40 Nield, J. M., Wiggs, G. F. S., Baddock, M. C., Nangolo, S. N., Huck, R. A., Rambert, C. (2025). Surface and meteorological data of protodune dynamics at Helga's interdune area (north), Gobabeb, Namib Desert, Namibia from September to December 2023. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/d5675759-de19-4d47-ba5d-f8fb323bdc24 Nield, J.M., Wiggs, G.F.S., Baddock, M.C., Hipondoka, M.H.T., Delorme, P., Morgan, P.R., Mayaud, J.R., Huck, R.A., Wallum, N.S., Flores Aqueveque, V., Gillies, J.A. (2025) Surface and meteorological data of barchan and protodune dynamics at the Huab Dune Field, Skeleton Coast, Namibia from 2014 to 2023. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/f7d18a98-9cd5-4b35-b42d-ed9f5afd944d