气候变化领域集成服务门户(CCPortal): Life cycle of stratocumulus clouds over 1 year at the coast of the Atacama Desert

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DOI	10.5194/acp-22-12241-2022
	Life cycle of stratocumulus clouds over 1 year at the coast of the Atacama Desert
	Schween, Jan H.; del Rio, Camilo; Garcia, Juan-Luis; Osses, Pablo; Westbrook, Sarah; Lohnert, Ulrich
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12241
结束页码	12267
卷号	22 期号:18 页码:27
英文摘要	Marine stratocumulus clouds of the eastern Pacific play an essential role in the earth's energy and radiation budget. Parts of these clouds off the western coast of South America form the major source of water to the hyperarid Atacama Desert coastal region at the northern coast of Chile. For the first time, a full year of vertical structure observations of the coastal stratocumulus and their environment is presented and analyzed. Installed at Iquique Airport in northern Chile in 2018/2019, three state-of-the-art remote sensing instruments provide vertical profiles of cloud macro- and micro-physical properties, wind, turbulence, and temperature as well as integrated values of water vapor and liquid water. Distinct diurnal and seasonal patterns of the stratocumulus life cycle are observed. Embedded in a land-sea circulation with a superimposed southerly wind component, maximum cloud occurrence and vertical extent occur at night but minima at local noon. Nighttime clouds are maintained by cloud-top cooling, whereas afternoon clouds reappear within a convective boundary layer driven through local moisture advection from the Pacific. During the night, these clouds finally re-connect to the maritime clouds in the upper branch of the land-sea circulation. The diurnal cycle is much more pronounced in austral winter, with lower, thicker, and more abundant (5x) clouds than in summer. This can be associated with different sea surface temperature (SST) gradients in summer and winter, leading to a stable or neutral stratification of the maritime boundary layer at the coast of the Atacama Desert in Iquique.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000855443500001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273772
作者单位	University of Cologne; Pontificia Universidad Catolica de Chile; Universidad Catolica del Norte; Pontificia Universidad Catolica de Chile
推荐引用方式 GB/T 7714	Schween, Jan H.,del Rio, Camilo,Garcia, Juan-Luis,et al. Life cycle of stratocumulus clouds over 1 year at the coast of the Atacama Desert[J],2022,22(18):27.
APA	Schween, Jan H.,del Rio, Camilo,Garcia, Juan-Luis,Osses, Pablo,Westbrook, Sarah,&Lohnert, Ulrich.(2022).Life cycle of stratocumulus clouds over 1 year at the coast of the Atacama Desert.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(18),27.
MLA	Schween, Jan H.,et al."Life cycle of stratocumulus clouds over 1 year at the coast of the Atacama Desert".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.18(2022):27.