气候变化领域集成服务门户(CCPortal): New light on the heart of darkness of the solar chromosphere

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DOI	10.1126/science.263.5143.64
	New light on the heart of darkness of the solar chromosphere
	Solanki S.K.; Livingston W.; Ayres T.
发表日期	1994
ISSN	0036-8075
起始页码	64
结束页码	66
卷号	263 期号:5143
英文摘要	Solar carbon monoxide spectra indicate the existence of a cool (less than 4000 kelvin) component to the solar chromosphere coexisting with the hot, bright gas at 6000 to 7000 kelvin. However, both the existence and the location of the cool component have been controversial. New high-resolution spectra show that carbon monoxide goes into emission just beyond the limb, allowing it to be probed without photospheric contamination. The cool component has temperatures as low as 3000 to 3500 kelvin and appears to cover 50 to 85 percent of the quiet solar surface. There is a steep temperature rise to normal chromospheric temperatures at a height of 900 to 1100 kilometers. Large horizontal velocities are seen, suggesting that the cool component is maintained by the supersonic adiabatic expansion of upwelling gas in overshooting granules.
英文关键词	Goes
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/245549
作者单位	Institute of Astronomy, ETH-Zentrum, CH-8092 Zürich, Switzerland; National Solar Observatory, Natl. Optical Astron. Observatories, Tucson, AZ 85726, United States; Ctr. Astrophys. and Space Astron., University of Colorado, Boulder, CO 80309-0391, United States
推荐引用方式 GB/T 7714	Solanki S.K.,Livingston W.,Ayres T.. New light on the heart of darkness of the solar chromosphere[J],1994,263(5143).
APA	Solanki S.K.,Livingston W.,&Ayres T..(1994).New light on the heart of darkness of the solar chromosphere.Science,263(5143).
MLA	Solanki S.K.,et al."New light on the heart of darkness of the solar chromosphere".Science 263.5143(1994).