气候变化领域集成服务门户(CCPortal): An observational study of snow aging and the seasonal variation of snow albedo by using data from Col de Porte, France

CCPortal

DOI	10.1007/s11434-014-0429-9
	An observational study of snow aging and the seasonal variation of snow albedo by using data from Col de Porte, France
	Chen, Ajiao; Li, Weiping; Li, Weijing; Liu, Xin
通讯作者	Li, WP (通讯作者)
发表日期	2014
ISSN	1001-6538
EISSN	1861-9541
起始页码	4881
结束页码	4889
卷号	59 期号:34
英文摘要	An 18-year long (1993-2011) comprehensive dataset of snow and meteorological variables from Col de Porte, France is used to analyze the variation of shortwave broadband albedo with elapsed time after snowfalls (snow aging) during each snow season. The effects of air temperature, snow surface temperature and snow depth on snow albedo are investigated. An index based on the accumulation of air temperature over several consecutive days with daily mean higher than 2.5 A degrees C is proposed to divide each snow-covered period into a dry and the following wet snow season when this index reaches 18 A degrees C. The results indicate that snow surface albedo decreases exponentially with time in both dry and wet snow seasons. Snow albedo reduction with snow aging is small at low surface temperature and the reduction rate increases with the rise of surface temperature. However, the reduction rate is widely scattered within the observed range of temperature, implying a loose relationship between snow albedo and snow surface temperature. Snow albedo in wet snow season is generally smaller and decreases faster than in dry snow season. For Col de Porte site, snow depths to effectively mask the underlying surface are 21 and 33 cm in dry and wet snow season respectively.
关键词	SPECTRAL ALBEDO CLIMATE FEEDBACK SURFACE MODEL VALIDATION SCHEME COVER
英文关键词	Snow aging; Snow albedo; Dry snow season; Wet snow season; Snow surface temperature; Snow depth
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000344614800031
来源期刊	CHINESE SCIENCE BULLETIN
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258313
推荐引用方式 GB/T 7714	Chen, Ajiao,Li, Weiping,Li, Weijing,et al. An observational study of snow aging and the seasonal variation of snow albedo by using data from Col de Porte, France[J]. 中国科学院青藏高原研究所,2014,59(34).
APA	Chen, Ajiao,Li, Weiping,Li, Weijing,&Liu, Xin.(2014).An observational study of snow aging and the seasonal variation of snow albedo by using data from Col de Porte, France.CHINESE SCIENCE BULLETIN,59(34).
MLA	Chen, Ajiao,et al."An observational study of snow aging and the seasonal variation of snow albedo by using data from Col de Porte, France".CHINESE SCIENCE BULLETIN 59.34(2014).