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  Modeling the Hydrological Cycle in the Atmosphere of Mars: Influence of a Bimodal Size Distribution of Aerosol Nucleation Particles

Shaposhnikov, D. S., Rodin, A. V., Medvedev, A. S., Fedorova, A. A., Kuroda, T., & Hartogh, P. (2018). Modeling the Hydrological Cycle in the Atmosphere of Mars: Influence of a Bimodal Size Distribution of Aerosol Nucleation Particles. Journal of Geophysical Research: Planets, 123(2), 508-526. doi:10.1002/2017JE005384.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-D55A-B Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D61B-B
Genre: Journal Article

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 Creators:
Shaposhnikov, Dmitry S., Author
Rodin, Alexander V., Author
Medvedev, Alexander S.1, Author              
Fedorova, Anna A., Author
Kuroda, Takeshi, Author
Hartogh, Paul1, Author              
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 MPIS_PROJECTS: ExoMars: ACS
 MPIS_GROUPS: Planetary Atmospheres
 Abstract: We present a new implementation of the hydrological cycle scheme into a general circulation model of the Martian atmosphere. The model includes a semi-Lagrangian transport scheme for water vapor and ice and accounts for microphysics of phase transitions between them. The hydrological scheme includes processes of saturation, nucleation, particle growth, sublimation, and sedimentation under the assumption of a variable size distribution. The scheme has been implemented into the Max Planck Institute Martian general circulation model and tested assuming monomodal and bimodal lognormal distributions of ice condensation nuclei. We present a comparison of the simulated annual variations, horizontal and vertical distributions of water vapor, and ice clouds with the available observations from instruments on board Mars orbiters. The accounting for bimodality of aerosol particle distribution improves the simulations of the annual hydrological cycle, including predicted ice clouds mass, opacity, number density, and particle radii. The increased number density and lower nucleation rates bring the simulated cloud opacities closer to observations. Simulations show a weak effect of the excess of small aerosol particles on the simulated water vapor distributions.

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Language(s): eng - English
 Dates: 2018-03-142018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/2017JE005384
 Degree: -

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Title: Journal of Geophysical Research: Planets
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 123 (2) Sequence Number: - Start / End Page: 508 - 526 Identifier: ISSN: 2156-2202
ISSN: 2169-9100