First Assimilation of Atmospheric Temperatures From the Emirates Mars InfraRed Spectrometer

Roland M.B. Young, Ehouarn Millour, François Forget, Michael D. Smith, Mariam Aljaberi, Christopher S. Edwards, Nathan Smith, Saadat Anwar, Philip R. Christensen, Michael J. Wolff

Research output: Contribution to journalArticlepeer-review

Abstract

We assimilate atmospheric temperatures from the Emirates Mars Infrared Spectrometer on board the Emirates Mars Mission (EMM) into the Mars Planetary Climate Model at the start of EMM's early science phase (Mars Year 36 Ls = 57.34–92.90°). Mars data assimilation benefits significantly from EMM's unique near-hemispheric observations, frequent repeated observations of the same location, and full diurnal cycle coverage. Our analysis verifies well against in-sample temperature observations, and is 1–3 K warmer than Mars Climate Sounder observations. We identify a warm front in concurrent Emirates eXploration Imager observations by correlating an elongated water ice cloud with temperatures and winds in the analysis; the analysis winds are consistent with its observed motion. We also calculate the full horizontal wind diurnal cycle; the zonal flow is weaker and the meridional circulation is stronger than simulating the same time period using the model alone.

Original languageEnglish (US)
Article numbere2022GL099656
JournalGeophysical Research Letters
Volume49
Issue number21
DOIs
StatePublished - Nov 16 2022
Externally publishedYes

Keywords

  • atmosphere
  • data assimilation
  • Emirates Mars Mission
  • Mars
  • thermal infrared
  • weather

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'First Assimilation of Atmospheric Temperatures From the Emirates Mars InfraRed Spectrometer'. Together they form a unique fingerprint.

Cite this