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Impact of Gravity Waves on the Middle Atmosphere of Mars: A Non-Orographic Gravity Wave Parameterization Based on Global Climate Modeling and MCS Observations

Gilli, G. and Forget, F. and Spiga, A. and Navarro, T. and Millour, E. and Montabone, L. and Kleinböhl, A. and Kass, D. M. and McCleese, D. J. and Schofield, J. T. (2020) Impact of Gravity Waves on the Middle Atmosphere of Mars: A Non-Orographic Gravity Wave Parameterization Based on Global Climate Modeling and MCS Observations. Journal of Geophysical Research. Planets, 125 (3). Art. No. e2018JE005873. ISSN 2169-9097.

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The impact of gravity waves (GW) on diurnal tides and the global circulation in the middle/upper atmosphere of Mars is investigated using a general circulation model (GCM). We have implemented a stochastic parameterization of non‐orographic GW into the Laboratoire de Météorologie Dynamique (LMD) Mars GCM (LMD‐MGCM) following an innovative approach. The source is assumed to be located above typical convective cells ( urn:x-wiley:jgre:media:jgre21298:jgre21298-math-0001250 Pa), and the effect of GW on the circulation and predicted thermal structure above 1 Pa ( urn:x-wiley:jgre:media:jgre21298:jgre21298-math-000250 km) is analyzed. We focus on the comparison between model simulations and observations by the Mars Climate Sounder (MCS) on board Mars Reconnaissance Orbiter during Martian Year 29. MCS data provide the only systematic measurements of the Martian mesosphere up to 80 km to date. The primary effect of GW is to damp the thermal tides by reducing the diurnal oscillation of the meridional and zonal winds. The GW drag reaches magnitudes of the order of 1 m/s/sol above 10 urn:x-wiley:jgre:media:jgre21298:jgre21298-math-0003 Pa in the northern hemisphere winter solstice and produces major changes in the zonal wind field (from tens to hundreds of m/s), while the impact on the temperature field is relatively moderate (10–20 K). It suggests that GW‐induced alteration of the meridional flow is the main responsible for the simulated temperature variation. The results also show that with the GW scheme included, the maximum day‐night temperature difference due to the diurnal tide is around 10 K, and the peak of the tide is shifted toward lower altitudes, in better agreement with MCS observations.

Item Type:Article
Related URLs:
URLURL TypeDescription
Gilli, G.0000-0002-2253-5802
Spiga, A.0000-0002-6776-6268
Navarro, T.0000-0002-0218-6617
Millour, E.0000-0003-4808-9203
Montabone, L.0000-0003-4998-914X
Kleinböhl, A.0000-0003-1548-1161
Kass, D. M.0000-0002-7154-2566
Schofield, J. T.0000-0001-8483-6849
Additional Information:© 2020 American Geophysical Union. Received 27 NOV 2018; Accepted 27 JAN 2020; Accepted article online 7 FEB 2020. This work was supported by the European Space Agency contract 4000122721/17/NL/LF/as and the Fundação para a Ciência e a Tecnologia, (FCT/MCTES) through national funds by these grants UID/FIS/04434/2019, UIDB/04434/2020, UIDP/04434/2020 and P‐TUGA PTDC/FIS‐AST/29942/2017. GG also received funding from the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska‐Curie grant agreement 796923. This work was granted access to the HPC resources of CINES (Grant A0040110391). MGCM and MCS data used in the paper are available at
Funding AgencyGrant Number
European Space Agency (ESA)4000122721/17/NL/LF/as
Fundação para a Ciência e a Tecnologia (FCT)UID/FIS/04434/2019
Fundação para a Ciência e a Tecnologia (FCT)UIDB/04434/2020
Fundação para a Ciência e a Tecnologia (FCT)P‐TUGA PTDC/FIS‐AST/29942/2017
Ministério da Ciência, Tecnologia e Ensino Superior (MCTES)UNSPECIFIED
Marie Curie Fellowship796923
Centre Informatique National de l’Enseignement SupérieurA0040110391
Subject Keywords:general circulation model; Mars middle atmosphere; non‐orographic gravity waves; thermal tides; Mars Climate Database
Issue or Number:3
Record Number:CaltechAUTHORS:20200409-093126853
Persistent URL:
Official Citation:Gilli, G., Forget, F., Spiga, A., Navarro, T., Millour, E., Montabone, L., et al. ( 2020). Impact of gravity waves on the middle atmosphere of Mars: A non‐orographic gravity wave parameterization based on global climate modeling and MCS observations. Journal of Geophysical Research: Planets, 125, e2018JE005873.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102428
Deposited By: Tony Diaz
Deposited On:09 Apr 2020 16:47
Last Modified:05 Oct 2020 16:40

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