DOI: 10.1002/grl.50326
论文题名: Carbon dioxide ice clouds, snowfalls, and baroclinic waves in the northern winter polar atmosphere of Mars
作者: Kuroda T. ; Medvedev A.S. ; Kasaba Y. ; Hartogh P.
刊名: Geophysical Research Letters
ISSN: 0094-9163
EISSN: 1944-8894
出版年: 2013
卷: 40, 期: 8 起始页码: 1484
结束页码: 1488
语种: 英语
英文关键词: atmospheric dynamics
; CO2 ice clouds
; GCM
; Mars
Scopus关键词: Atmospheric dynamics
; Atmospheric layers
; Baroclinic waves
; GCM
; General circulation model
; Ice clouds
; Mars
; Transient planetary waves
; Clouds
; Meteorological problems
; Snow
; Storms
; Carbon dioxide
; carbon dioxide
; climate prediction
; general circulation model
; ice cap
; Mars
; planetary wave
; polar meteorology
; seasonal variation
; simulation
; snowstorm
; sublimation
; winter
英文摘要: The formation of CO2 ice clouds in the northern winter polar atmosphere of Mars and their relation to baroclinic planetary waves, which dominate local dynamics, are studied using a general circulation model. The simulation shows that clouds are formed at altitudes of up to ∼ 40 km, and their occurrence correlates to a large degree with the cold phases of transient planetary waves. Ice particles formed up to ∼ 20 km can reach the surface in the form of snowfall in certain longitude regions, while in others, these particles likely sublimate in the lower warmer atmospheric layers. The simulation suggests that about a half of the seasonal ice cap is created by CO2 snow, while the remaining half by direct condensation on the surface. Thus, the occurrences of ice clouds and rates of deposition are closely linked to traveling planetary waves, indicating the possibility for the reliable forecasts of CO2 snow storms. Key Points CO2 ice clouds in polar winter are closely aligned with planetary waves CO2 ice cap is mostly formed by snowfalls from below 20 km Close connection of clouds and waves can form a basis for snow storm forecasts. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877976606&doi=10.1002%2fgrl.50326&partnerID=40&md5=bc3b0e9d9a25159494fb579cd4fa07fc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6427
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geophysics, Tohoku University, Planetary Plasma and Atmospheric Research Center, Sendai, Japan
Recommended Citation:
Kuroda T.,Medvedev A.S.,Kasaba Y.,et al. Carbon dioxide ice clouds, snowfalls, and baroclinic waves in the northern winter polar atmosphere of Mars[J]. Geophysical Research Letters,2013-01-01,40(8).