| DOI: | 10.1002/2016GL070065
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| 论文题名: | Contrasting responses to orbital precession on Titan and Earth |
| 作者: | Liu J.; Schneider T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8861
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| EISSN: | 1944-8592
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| 出版年: | 2016
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| 卷: | 43, 期:14 | | 起始页码: | 7774
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| 结束页码: | 7780
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| 语种: | 英语
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| 英文关键词: | Earth
; general circulation
; orbital precession
; precipitation
; Titan
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| Scopus关键词: | Earth (planet)
; Earth sciences
; Geophysics
; Precipitation (chemical)
; Atmospheric response
; General circulation
; General circulation model
; High Latitudes
; Hydrologic cycles
; Orbital precession
; Rotation rate
; Titan
; Orbits
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| 英文摘要: | Earth and Titan exhibit contrasting atmospheric responses to orbital precession. On Earth, most (water) precipitation falls in low latitudes, and precipitation is enhanced in a hemisphere when perihelion occurs in that hemisphere's summer. On Titan, most (methane) precipitation falls in high latitudes, and precipitation is enhanced in a hemisphere when aphelion occurs in that hemisphere's summer. We use a Titan general circulation model to elucidate the dynamical reasons for these different responses to orbital precession. They arise primarily because of the different diurnal rotation rates of Titan and Earth. The slower rotation rate of Titan leads to wider Hadley cells that transport moisture into polar regions. Changes in the length of summer, rather than in the intensity of summer insolation as in Earth's tropics, then dominate the precession response of the hydrologic cycle. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979747889&doi=10.1002%2f2016GL070065&partnerID=40&md5=e3db875e2e87309072b85c13a2e0b2b0
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9824
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | California Institute of Technology, Pasadena, CA, United States
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| Recommended Citation: | |
Liu J.,Schneider T.. Contrasting responses to orbital precession on Titan and Earth[J]. Geophysical Research Letters,2016-01-01,43(14).
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