Seasonal Variability of Deuterium in the Upper Atmosphere of Mars

Majd Mayyasi, J. Clarke, D. Bhattacharyya, J. Y. Chaufray, M. Benna, P. Mahaffy, S. Stone, Roger Yelle, E. Thiemann, M. Chaffin, J. Deighan, S. Jain, N. Schneider, B. Jakosky

Research output: Contribution to journalArticle

Abstract

Measurements by multiple Mars Atmosphere and Volatile Evolution mission instruments, obtained between November 2014 and November 2017, are analyzed to produce deuterium properties in the upper atmosphere of Mars. We show here, for the first time, the seasonal distribution and variability of D densities, temperatures, and estimated Jeans escape rates at the exobase (200 km). Within the data constraints, it is found that the variations in D properties are similar for the northern and southern hemispheres, and peak near southern summer solstice. Trends in the D Lyman-α brightness, temperature, density, and escape rate are increasing during the beginning of the dust storm season, peak near southern summer solstice, and decrease toward the end of the dust storm season. This suggests that seasonal drivers at Mars cause deuterium in the upper atmosphere to become globally enhanced when Mars is closest to the Sun and during the Martian dust season when water is provided to the upper atmosphere by subsurface, hydrological, and dust storm dynamics.

Original languageEnglish (US)
JournalJournal of Geophysical Research: Space Physics
DOIs
StatePublished - Jan 1 2019

Fingerprint

dust storms
Upper atmosphere
deuterium
Deuterium
upper atmosphere
mars
Dust
Mars
solstices
dust storm
seasonal variation
escape
summer
Mars atmosphere
brightness temperature
Southern Hemisphere
Northern Hemisphere
dust
temperature
sun

Keywords

  • deuterium
  • Mars
  • variability
  • water

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

Cite this

Mayyasi, M., Clarke, J., Bhattacharyya, D., Chaufray, J. Y., Benna, M., Mahaffy, P., ... Jakosky, B. (2019). Seasonal Variability of Deuterium in the Upper Atmosphere of Mars. Journal of Geophysical Research: Space Physics. https://doi.org/10.1029/2018JA026244

Seasonal Variability of Deuterium in the Upper Atmosphere of Mars. / Mayyasi, Majd; Clarke, J.; Bhattacharyya, D.; Chaufray, J. Y.; Benna, M.; Mahaffy, P.; Stone, S.; Yelle, Roger; Thiemann, E.; Chaffin, M.; Deighan, J.; Jain, S.; Schneider, N.; Jakosky, B.

In: Journal of Geophysical Research: Space Physics, 01.01.2019.

Research output: Contribution to journalArticle

Mayyasi, M, Clarke, J, Bhattacharyya, D, Chaufray, JY, Benna, M, Mahaffy, P, Stone, S, Yelle, R, Thiemann, E, Chaffin, M, Deighan, J, Jain, S, Schneider, N & Jakosky, B 2019, 'Seasonal Variability of Deuterium in the Upper Atmosphere of Mars', Journal of Geophysical Research: Space Physics. https://doi.org/10.1029/2018JA026244
Mayyasi, Majd ; Clarke, J. ; Bhattacharyya, D. ; Chaufray, J. Y. ; Benna, M. ; Mahaffy, P. ; Stone, S. ; Yelle, Roger ; Thiemann, E. ; Chaffin, M. ; Deighan, J. ; Jain, S. ; Schneider, N. ; Jakosky, B. / Seasonal Variability of Deuterium in the Upper Atmosphere of Mars. In: Journal of Geophysical Research: Space Physics. 2019.
@article{1acc97b9920f4c68aa98b233774f4264,
title = "Seasonal Variability of Deuterium in the Upper Atmosphere of Mars",
abstract = "Measurements by multiple Mars Atmosphere and Volatile Evolution mission instruments, obtained between November 2014 and November 2017, are analyzed to produce deuterium properties in the upper atmosphere of Mars. We show here, for the first time, the seasonal distribution and variability of D densities, temperatures, and estimated Jeans escape rates at the exobase (200 km). Within the data constraints, it is found that the variations in D properties are similar for the northern and southern hemispheres, and peak near southern summer solstice. Trends in the D Lyman-α brightness, temperature, density, and escape rate are increasing during the beginning of the dust storm season, peak near southern summer solstice, and decrease toward the end of the dust storm season. This suggests that seasonal drivers at Mars cause deuterium in the upper atmosphere to become globally enhanced when Mars is closest to the Sun and during the Martian dust season when water is provided to the upper atmosphere by subsurface, hydrological, and dust storm dynamics.",
keywords = "deuterium, Mars, variability, water",
author = "Majd Mayyasi and J. Clarke and D. Bhattacharyya and Chaufray, {J. Y.} and M. Benna and P. Mahaffy and S. Stone and Roger Yelle and E. Thiemann and M. Chaffin and J. Deighan and S. Jain and N. Schneider and B. Jakosky",
year = "2019",
month = "1",
day = "1",
doi = "10.1029/2018JA026244",
language = "English (US)",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9380",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - Seasonal Variability of Deuterium in the Upper Atmosphere of Mars

AU - Mayyasi, Majd

AU - Clarke, J.

AU - Bhattacharyya, D.

AU - Chaufray, J. Y.

AU - Benna, M.

AU - Mahaffy, P.

AU - Stone, S.

AU - Yelle, Roger

AU - Thiemann, E.

AU - Chaffin, M.

AU - Deighan, J.

AU - Jain, S.

AU - Schneider, N.

AU - Jakosky, B.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Measurements by multiple Mars Atmosphere and Volatile Evolution mission instruments, obtained between November 2014 and November 2017, are analyzed to produce deuterium properties in the upper atmosphere of Mars. We show here, for the first time, the seasonal distribution and variability of D densities, temperatures, and estimated Jeans escape rates at the exobase (200 km). Within the data constraints, it is found that the variations in D properties are similar for the northern and southern hemispheres, and peak near southern summer solstice. Trends in the D Lyman-α brightness, temperature, density, and escape rate are increasing during the beginning of the dust storm season, peak near southern summer solstice, and decrease toward the end of the dust storm season. This suggests that seasonal drivers at Mars cause deuterium in the upper atmosphere to become globally enhanced when Mars is closest to the Sun and during the Martian dust season when water is provided to the upper atmosphere by subsurface, hydrological, and dust storm dynamics.

AB - Measurements by multiple Mars Atmosphere and Volatile Evolution mission instruments, obtained between November 2014 and November 2017, are analyzed to produce deuterium properties in the upper atmosphere of Mars. We show here, for the first time, the seasonal distribution and variability of D densities, temperatures, and estimated Jeans escape rates at the exobase (200 km). Within the data constraints, it is found that the variations in D properties are similar for the northern and southern hemispheres, and peak near southern summer solstice. Trends in the D Lyman-α brightness, temperature, density, and escape rate are increasing during the beginning of the dust storm season, peak near southern summer solstice, and decrease toward the end of the dust storm season. This suggests that seasonal drivers at Mars cause deuterium in the upper atmosphere to become globally enhanced when Mars is closest to the Sun and during the Martian dust season when water is provided to the upper atmosphere by subsurface, hydrological, and dust storm dynamics.

KW - deuterium

KW - Mars

KW - variability

KW - water

UR - http://www.scopus.com/inward/record.url?scp=85063151228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063151228&partnerID=8YFLogxK

U2 - 10.1029/2018JA026244

DO - 10.1029/2018JA026244

M3 - Article

AN - SCOPUS:85063151228

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9380

ER -