干旱区生态环境知识资源中心(Arid): Titan's climate patterns and surface methane distribution due to the coupling of land hydrology and atmosphere

Arid

DOI	10.1038/s41550-019-0963-0
	Titan's climate patterns and surface methane distribution due to the coupling of land hydrology and atmosphere
	Faulk, Sean P.1; Lora, Juan M.1,2; Mitchell, Jonathan L.1,3; Milly, P. C. D.4
通讯作者	Lora, Juan M.
来源期刊	NATURE ASTRONOMY
ISSN	2397-3366
出版年	2020
卷号	4 期号:4 页码:390-398
英文摘要	Planetary surfaces beyond Earth's are impacted by surface hydrology, and exhibit fluvial and lacustrine features. Titan in particular harbours a rich hydroclimate replete with valley networks, lakes, seas and putative wetlands, all of which are pronounced in the lower-elevation polar regions. However, understanding of Titan's global climate has heretofore neglected the hydraulic influence of Titan's large-scale topography. Here we add a surface hydrology model to an existing Titan atmospheric model, and find that infiltration, groundmethane evaporation, and surface and subsurface flow are fundamental to simultaneously reproducing Titan's observed surface liquid distribution and other aspects of its climate system. We propose that Titan's climate features infiltration into unsaturated low- and mid-latitude highlands and surface or subsurface flow into high-latitude basins, producing the observed polar moist climes and equatorial deserts. This result implies that a potentially massive unobserved methane reservoir participates in Titan's methane cycle. It also illustrates the importance of surface hydrology in Titan climate models, and by extension suggests the influence of surface hydrology in idealized models of other planetary climates, including the climates and palaeoclimates of Earth, Mars and exoplanets. Coupling a global surface hydrology model to an existing atmospheric model of Titan reproduces the observed variable climate and distribution of surface liquid, with possible implications for an unobserved methane reservoir on Titan.
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000525856700021
WOS关键词	CONTINENTAL-SCALE ; CATCHMENT-AREA ; LAKE DISTRIBUTION ; FLUVIAL EROSION ; FLOW ; SIMULATIONS ; DYNAMICS ; MODEL ; WATER ; EVAPOTRANSPIRATION
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
来源机构	United States Geological Survey ; University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315221
作者单位	1.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA; 2.Yale Univ, Dept Geol & Geophys, New Haven, CT 90095 USA; 3.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA; 4.US Geol Survey, Princeton, NJ USA
推荐引用方式 GB/T 7714	Faulk, Sean P.,Lora, Juan M.,Mitchell, Jonathan L.,et al. Titan's climate patterns and surface methane distribution due to the coupling of land hydrology and atmosphere[J]. United States Geological Survey, University of California, Los Angeles,2020,4(4):390-398.
APA	Faulk, Sean P.,Lora, Juan M.,Mitchell, Jonathan L.,&Milly, P. C. D..(2020).Titan's climate patterns and surface methane distribution due to the coupling of land hydrology and atmosphere.NATURE ASTRONOMY,4(4),390-398.
MLA	Faulk, Sean P.,et al."Titan's climate patterns and surface methane distribution due to the coupling of land hydrology and atmosphere".NATURE ASTRONOMY 4.4(2020):390-398.