DOI: 10.1002/2014GL060235
论文题名: The radiative impact of water ice clouds from a reanalysis of Mars Climate Sounder data
作者: Steele L.J. ; Lewis S.R. ; Patel M.R.
刊名: Geophysical Research Letters
ISSN: 0094-10002
EISSN: 1944-9733
出版年: 2014
卷: 41, 期: 13 起始页码: 4471
结束页码: 4478
语种: 英语
英文关键词: assimilation
; atmosphere
; climate
; clouds
; Mars
Scopus关键词: Acoustic devices
; Clouds
; Earth atmosphere
; Opacity
; Tropics
; assimilation
; climate
; High-latitude jets
; Increasing temperatures
; Mars
; Meridional overturning circulations
; Meridional temperature gradient
; Temperature retrieval
; Atmospheric temperature
英文摘要: The radiative impact of water ice clouds on the atmosphere of Mars is analyzed via a reanalysis of Mars Climate Sounder (MCS) temperature and ice opacity profiles. Polar hood clouds only have a small radiative impact, while tropical clouds increase diurnally averaged temperatures at the 10 Pa level by ∼10-15 K. Cloud radiative heating strengthens the meridional overturning circulation, increasing temperatures in the polar warmings by ∼6-8 K and temperatures in the tropics by ∼2 K (due to increased dust mass). The positions and wind speeds of the tropical and high-latitude jets are also modified through changes to the meridional temperature gradients. An effective ice particle radius of reff=1.4μm produces temperatures around the aphelion cloud belt in close agreement to MCS temperature retrievals. For high-altitude tropical clouds during northern autumn, a better agreement is found using reff=0.8μm. Key Points Tropical clouds increase diurnally averaged temperatures at 10 Pa by 10-15 K Polar hoods have a small radiative impact due to low density-scaled opacities Stronger meridional overturning circulation increases polar warmings by 6-8 K ©2014. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903806279&doi=10.1002%2f2014GL060235&partnerID=40&md5=7e3f77d56d5f75e4cc899f622b25a396
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7266
Appears in Collections: 气候减缓与适应
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作者单位: Department of Physical Sciences, Open University, Milton Keynes, United Kingdom
Recommended Citation:
Steele L.J.,Lewis S.R.,Patel M.R.. The radiative impact of water ice clouds from a reanalysis of Mars Climate Sounder data[J]. Geophysical Research Letters,2014-01-01,41(13).