Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer

F. Y. Jiang, Roger Yelle, S. K. Jain, J. Cui, F. Montmessin, N. M. Schneider, J. Deighan, H. Gröller, L. Verdier

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper reports the first detections of two high-altitude nighttime CO2 clouds on Mars during southern summer (Ls=264° and Ls=330°) with stellar occultation measurements by the Imaging Ultraviolet Spectrograph on board the Mars Atmosphere and Volatile Evolution spacecraft. Interpretation of the transmission spectra with Mie theory indicates particle radii of ∼90–110 nm assuming a monodisperse distribution. The altitude profile of extinction indicates that the cloud layers are confined horizontally to sizes less than ∼500–700 km. Examination of the CO2 density and temperature profiles reveals strong wave-like perturbations. Supersaturated temperatures occur at the maximum negative extent of these wave-like perturbations, which are organized in longitude with a dominant m=3 zonal harmonic. This suggests that tides are important in the formation of CO2 clouds.

Original languageEnglish (US)
JournalGeophysical Research Letters
DOIs
StatePublished - Jan 1 2019

Fingerprint

ice clouds
mars
summer
Mars
ice
zonal harmonics
Mars atmosphere
perturbation
stellar occultation
ultraviolet spectrometers
Mie theory
Mie scattering
high altitude
tides
longitude
profiles
temperature profile
temperature profiles
spacecraft
tide

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Jiang, F. Y., Yelle, R., Jain, S. K., Cui, J., Montmessin, F., Schneider, N. M., ... Verdier, L. (2019). Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer. Geophysical Research Letters. https://doi.org/10.1029/2019GL082029

Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer. / Jiang, F. Y.; Yelle, Roger; Jain, S. K.; Cui, J.; Montmessin, F.; Schneider, N. M.; Deighan, J.; Gröller, H.; Verdier, L.

In: Geophysical Research Letters, 01.01.2019.

Research output: Contribution to journalArticle

Jiang, FY, Yelle, R, Jain, SK, Cui, J, Montmessin, F, Schneider, NM, Deighan, J, Gröller, H & Verdier, L 2019, 'Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer', Geophysical Research Letters. https://doi.org/10.1029/2019GL082029
Jiang, F. Y. ; Yelle, Roger ; Jain, S. K. ; Cui, J. ; Montmessin, F. ; Schneider, N. M. ; Deighan, J. ; Gröller, H. ; Verdier, L. / Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer. In: Geophysical Research Letters. 2019.
@article{0dfd7ea7406f4923b84e12c1a300226f,
title = "Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer",
abstract = "This paper reports the first detections of two high-altitude nighttime CO2 clouds on Mars during southern summer (Ls=264° and Ls=330°) with stellar occultation measurements by the Imaging Ultraviolet Spectrograph on board the Mars Atmosphere and Volatile Evolution spacecraft. Interpretation of the transmission spectra with Mie theory indicates particle radii of ∼90–110 nm assuming a monodisperse distribution. The altitude profile of extinction indicates that the cloud layers are confined horizontally to sizes less than ∼500–700 km. Examination of the CO2 density and temperature profiles reveals strong wave-like perturbations. Supersaturated temperatures occur at the maximum negative extent of these wave-like perturbations, which are organized in longitude with a dominant m=3 zonal harmonic. This suggests that tides are important in the formation of CO2 clouds.",
author = "Jiang, {F. Y.} and Roger Yelle and Jain, {S. K.} and J. Cui and F. Montmessin and Schneider, {N. M.} and J. Deighan and H. Gr{\"o}ller and L. Verdier",
year = "2019",
month = "1",
day = "1",
doi = "10.1029/2019GL082029",
language = "English (US)",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",

}

TY - JOUR

T1 - Detection of Mesospheric CO2 Ice Clouds on Mars in Southern Summer

AU - Jiang, F. Y.

AU - Yelle, Roger

AU - Jain, S. K.

AU - Cui, J.

AU - Montmessin, F.

AU - Schneider, N. M.

AU - Deighan, J.

AU - Gröller, H.

AU - Verdier, L.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - This paper reports the first detections of two high-altitude nighttime CO2 clouds on Mars during southern summer (Ls=264° and Ls=330°) with stellar occultation measurements by the Imaging Ultraviolet Spectrograph on board the Mars Atmosphere and Volatile Evolution spacecraft. Interpretation of the transmission spectra with Mie theory indicates particle radii of ∼90–110 nm assuming a monodisperse distribution. The altitude profile of extinction indicates that the cloud layers are confined horizontally to sizes less than ∼500–700 km. Examination of the CO2 density and temperature profiles reveals strong wave-like perturbations. Supersaturated temperatures occur at the maximum negative extent of these wave-like perturbations, which are organized in longitude with a dominant m=3 zonal harmonic. This suggests that tides are important in the formation of CO2 clouds.

AB - This paper reports the first detections of two high-altitude nighttime CO2 clouds on Mars during southern summer (Ls=264° and Ls=330°) with stellar occultation measurements by the Imaging Ultraviolet Spectrograph on board the Mars Atmosphere and Volatile Evolution spacecraft. Interpretation of the transmission spectra with Mie theory indicates particle radii of ∼90–110 nm assuming a monodisperse distribution. The altitude profile of extinction indicates that the cloud layers are confined horizontally to sizes less than ∼500–700 km. Examination of the CO2 density and temperature profiles reveals strong wave-like perturbations. Supersaturated temperatures occur at the maximum negative extent of these wave-like perturbations, which are organized in longitude with a dominant m=3 zonal harmonic. This suggests that tides are important in the formation of CO2 clouds.

UR - http://www.scopus.com/inward/record.url?scp=85069871329&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85069871329&partnerID=8YFLogxK

U2 - 10.1029/2019GL082029

DO - 10.1029/2019GL082029

M3 - Article

AN - SCOPUS:85069871329

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

ER -