气候变化领域集成服务门户(CCPortal): Use of a multi-temporal grid method to analyze changes in glacier coverage in the Tibetan Plateau

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DOI	10.1016/j.pnsc.2008.12.002
	Use of a multi-temporal grid method to analyze changes in glacier coverage in the Tibetan Plateau
	Ye, Qinghua; Chen, Feng; Stein, Alfred; Zhong, Zhenwei
通讯作者	Ye, QH (通讯作者)
发表日期	2009
ISSN	1002-0071
EISSN	1745-5391
起始页码	861
结束页码	872
卷号	19 期号:7
英文摘要	This paper describes a multi-temporal grid method for quantifying changes in glacier coverage. A multi-temporal grid synthesizes spatial, attribute and process components of glacier information by sequentially combining spatial data from satellite images or maps. It enables us to identify glacier retreat and advance areas in individual grid cells for three or more periods of data sets. Discrepancies among the sequential data sets were detected graphically and numerically, including noise from geo-location error, misclassification, or different interpretation results in various pixel resolutions. Noise was detected and corrected to a large extent by visualization of the synthetic grid. The paper compares the results with that from a common method based on individual data sets, focusing on the Mt. Naimona'Nyi and Mt. Qomolangma regions at the northern slopes of the Himalayas. Results show that the identified noise (e. g. by 2.5 km(2) in the Mt. Naimona'Nyi region) is much larger than measurement uncertainty calculated by sensor resolution and co-registration error (e. g. by 0.015 km(2) in the Mt. Naimona'Nyi region). After noise removal, we notice that glacier recession clearly accelerates. The multi-temporal grid method results in a better quantification of glacier variation. It shows that glaciers in the Himalayas have both retreated and advanced during the last several decades, with retreat dominating and accelerating. Glaciers on the northern slope of Mt. Qomolangma in the middle Himalayas retreat more extensively and faster than those in the Mt. Naimona'Nyi region in the western Himalayas. (C) 2009 National Natural Science Foundation of China and Chinese Academy of Sciences. Published by Elsevier Limited and Science in China Press. All rights reserved.
关键词	LAND ICE MEASUREMENTS ASTER FLUCTUATIONS MOUNTAIN IMAGERY ASIA
英文关键词	Glacier; Multi-temporal grid; Mt. Naimona'Nyi; Mt. Qomolangma; Himalayas; Tibetan Plateau
语种	英语
WOS研究方向	Materials Science ; Science & Technology - Other Topics
WOS类目	Materials Science, Multidisciplinary ; Multidisciplinary Sciences
WOS记录号	WOS:000266345100010
来源期刊	PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
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/257627
推荐引用方式 GB/T 7714	Ye, Qinghua,Chen, Feng,Stein, Alfred,et al. Use of a multi-temporal grid method to analyze changes in glacier coverage in the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2009,19(7).
APA	Ye, Qinghua,Chen, Feng,Stein, Alfred,&Zhong, Zhenwei.(2009).Use of a multi-temporal grid method to analyze changes in glacier coverage in the Tibetan Plateau.PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL,19(7).
MLA	Ye, Qinghua,et al."Use of a multi-temporal grid method to analyze changes in glacier coverage in the Tibetan Plateau".PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL 19.7(2009).