4.5 Article

Global Variations in Water Vapor and Saturation State Throughout the Mars Year 34 Dusty Season

期刊

出版社

AMER GEOPHYSICAL UNION
DOI: 10.1029/2022JE007203

关键词

-

资金

  1. UK Space Agency [ST/W00268X/1, ST/R001405/1, ST/T002069/1]
  2. Belgian Science Policy Office (BELSPO)
  3. ESA Prodex Office [4000103401, 4000121493]
  4. Spanish Ministry of Science and Innovation (MCIU)
  5. European funds [PGC2018-101836-B-I00, ESP2017-87143-R]
  6. Italian Space Agency [2018-2-HH.0]
  7. Belgian Fonds de la Recherche Scientifique - FNRS [30442502]
  8. State Agency for Research of the Spanish MCIU [SEV-2017-0709]
  9. National Aeronautics and Space Administration
  10. Ministry of Science and Higher Education of the Russian Federation
  11. Natural Sciences and Engineering Research Council of Canada (NSERC) [PDF-516895-2018]
  12. National Centre for Space Studies of France (CNES)
  13. US Government
  14. [ST/V002295/1]
  15. [ST/V005332/1]
  16. [ST/S00145X/1]

向作者/读者索取更多资源

This study investigates the global vertical distribution of water vapor on Mars and its relationship with supersaturation and water loss. The research reveals that during the dusty season, there is a lack of water vapor below 20 km in the northern polar latitudes, while variations above this altitude are caused by factors such as transport from mid-latitudes and dust storms. The findings also suggest the presence of supersaturated water vapor in the northern winter polar vortex.
To understand the evolving martian water cycle, a global perspective of the combined vertical and horizontal distribution of water is needed in relation to supersaturation and water loss and how it varies spatially and temporally. The global vertical water vapor distribution is investigated through an analysis that unifies water, temperature and dust retrievals from several instruments on multiple spacecraft throughout Mars Year (MY) 34 with a global circulation model. During the dusty season of MY 34, northern polar latitudes are largely absent of water vapor below 20 km with variations above this altitude due to transport from mid-latitudes during a global dust storm, the downwelling branch of circulation during perihelion season and the intense MY 34 southern summer regional dust storm. Evidence is found of supersaturated water vapor breaking into the northern winter polar vortex. Supersaturation above around 60 km is found for most of the time period, with lower altitudes showing more diurnal variation in the saturation state of the atmosphere. Discrete layers of supersaturated water are found across all latitudes. The global dust storm and southern summer regional dust storm forced water vapor at all latitudes in a supersaturated state to 60-90 km where it is more likely to escape from the atmosphere. The reanalysis data set provides a constrained global perspective of the water cycle in which to investigate the horizontal and vertical transport of water throughout the atmosphere, of critical importance to understand how water is exchanged between different reservoirs and escapes the atmosphere.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据