气候变化领域集成服务门户(CCPortal): Multi-Temporal Variations in Surface Albedo on Urumqi Glacier No.1 in Tien Shan, under Arid and Semi-Arid Environment

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DOI	10.3390/rs14040808
	Multi-Temporal Variations in Surface Albedo on Urumqi Glacier No.1 in Tien Shan, under Arid and Semi-Arid Environment
	Yue, Xiaoying; Li, Zhongqin; Li, Huilin; Wang, Feiteng; Jin, Shuang
通讯作者	Li, HL (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
发表日期	2022
EISSN	2072-4292
卷号	14 期号:4
英文摘要	Surface albedo exerts substantial control over the energy available for glacier melting. For Urumqi Glacier No.1 in the Tien Shan Mountains, China, represented as a summer accumulation glacier, the variations in albedo driven by surface processes are complex and still poorly understood. In this study, we examined the interannual trends in ablation-period albedo from 2000 to 2021 using MOD10A1 products, evaluated the variation in bare-ice albedo retrieved from 13 end-of-summer Landsat images obtained between 2002 and 2019, and investigated the seasonal variation and diurnal cycle of surface albedo collected near the equilibrium line of the glacier by an AWS from September 2018 to August 2021. During the period of 2000-2021, the average ablation-period albedo presented a slight but not statistically significant downward trend, with a total decrease of 1.87%. Specifically, the decrease in glacier albedo was quicker in July than that in August, and there was a slight increase in May and June. The blackening phenomenon was shown on the east branch glacier, but not on the west branch glacier. For seasonal variability, a bimodal pattern was demonstrated, different from the unimodal seasonal variation in other midlatitude glaciers. The albedo peaks occurred in December and April or May. Under clear sky conditions, the diurnal cycle presented three patterns: a symmetric pattern, an asymmetric pattern, and a progressive decreasing pattern. Air temperature and solid precipitation are the main drivers of variations in glacier albedo, but in different periods of the ablation season, two climate variables affect albedo to varying degrees. The effect of surface albedo reduction enhanced glacier melting by about 20% over the past 20 years. The short-term increase in albedo caused by summer snowfall can considerably reduce glacier melting by as much as 80% in June.
关键词	MASS-BALANCE INTERANNUAL VARIABILITY TEMPORAL VARIATIONS NEW-ZEALAND MODIS SNOW DAROLLA ENERGY ICE MORTERATSCHGLETSCHER
英文关键词	surface albedo; temporal variability; Landsat bare-ice albedo; semi-arid glacier environment; Tien Shan
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000764781400001
来源期刊	REMOTE SENSING
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253973
作者单位	[Yue, Xiaoying; Li, Zhongqin; Li, Huilin; Wang, Feiteng; Jin, Shuang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Li, Zhongqin] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou 730070, Peoples R China; [Jin, Shuang] Wuhan Univ, Sch Geodesy & Geomat, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Yue, Xiaoying,Li, Zhongqin,Li, Huilin,et al. Multi-Temporal Variations in Surface Albedo on Urumqi Glacier No.1 in Tien Shan, under Arid and Semi-Arid Environment[J]. 中国科学院西北生态环境资源研究院,2022,14(4).
APA	Yue, Xiaoying,Li, Zhongqin,Li, Huilin,Wang, Feiteng,&Jin, Shuang.(2022).Multi-Temporal Variations in Surface Albedo on Urumqi Glacier No.1 in Tien Shan, under Arid and Semi-Arid Environment.REMOTE SENSING,14(4).
MLA	Yue, Xiaoying,et al."Multi-Temporal Variations in Surface Albedo on Urumqi Glacier No.1 in Tien Shan, under Arid and Semi-Arid Environment".REMOTE SENSING 14.4(2022).