气候变化领域集成服务门户(CCPortal): A sulfur dioxide climate feedback on early Mars

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DOI	10.1126/science.1147039
	A sulfur dioxide climate feedback on early Mars
	Halevy I.; Zuber M.T.; Schrag D.P.
发表日期	2007
ISSN	0036-8075
起始页码	1903
结束页码	1907
卷号	318 期号:5858
英文摘要	Ancient Mars had liquid water on its surface and a CO2-rich atmosphere. Despite the implication that massive carbonate deposits should have formed, these have not been detected. On the basis of fundamental chemical and physical principles, we propose that climatic conditions enabling the existence of liquid water were maintained by appreciable atmospheric concentrations of volcanically degassed SO2 and H2S. The geochemistry resulting from equilibration of this atmosphere with the hydrological cycle is shown to inhibit the formation of carbonates. We propose an early martian climate feedback involving SO2, much like that maintained by CO 2 on Earth.
英文关键词	carbon dioxide; carbonic acid; hydrogen sulfide; mineral; silicate; sulfur dioxide; water; atmospheric chemistry; carbon dioxide; carbonate; climate conditions; climate feedback; concentration (composition); geochemistry; Mars; sulfur dioxide; article; astronomy; atmosphere; climate; environmental temperature; geochemistry; liquid; magnetic field; precipitation; priority journal; sediment; weather; Atmosphere; Carbon Dioxide; Carbonates; Climate; Extraterrestrial Environment; Hydrogen Sulfide; Mars; Oxidation-Reduction; Photolysis; Precipitation; Sulfites; Sulfur Dioxide; Temperature; Water
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243920
作者单位	Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA 02138, United States; Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Halevy I.,Zuber M.T.,Schrag D.P.. A sulfur dioxide climate feedback on early Mars[J],2007,318(5858).
APA	Halevy I.,Zuber M.T.,&Schrag D.P..(2007).A sulfur dioxide climate feedback on early Mars.Science,318(5858).
MLA	Halevy I.,et al."A sulfur dioxide climate feedback on early Mars".Science 318.5858(2007).