气候变化领域集成服务门户(CCPortal): Perennial snow and ice cover change from 2001 to 2021 in the Hindu-Kush Himalayan region derived from the Landsat analysis-ready data

CCPortal

DOI	10.1016/j.rsase.2024.101192
	Perennial snow and ice cover change from 2001 to 2021 in the Hindu-Kush Himalayan region derived from the Landsat analysis-ready data
	Khan, Ahmad; Potapov, Peter; Hansen, Matthew C.; Pickens, Amy H.; Tyukavina, Alexandra; Serna, Andres Hernandez; Uddin, Kabir; Ahmad, Jawairia
发表日期	2024
ISSN	2352-9385
起始页码	34
卷号	34
英文摘要	The changing climate directly affects spatial and temporal patterns of snow and ice cover globally and in the Hindu-Kush Himalayan (HKH) region. In the HKH, around 3.3 billion people across 11 countries depend on water originating from mountain glaciers and snowfields, and melting snow cover has a direct impact on their livelihood and well-being. Various studies have shown that the snow and ice cover in the HKH is declining at an alarming rate but have been limited in geographic, spatial and temporal scales. Here, we employed the Global Land Analysis and Discovery analysis ready Landsat time-series data (GLAD ARD) to map changes in perennial snow and ice between 2001 and 2021 at five-year epochs using decision tree ensemble models. These maps were used to create a stratified sampling design for reference data collection to estimate area and map accuracy. All five-year epoch maps have user's accuracies above 90% and producer's accuracies above 91%. Our sample data analysis showed that one-eighth of the extent of perennial snow and ice in the HKH, totalling 15,770 km2 (CI +/- 3195 km2), disappeared over the last two decades with 105,935 km2 (CI +/- 3396 km2) remaining in 2021. From map-based estimates, the largest decline of perennial snow and ice cover among the mountain ranges was found in the Himalayas with an estimated reduction of 5741 km2. Among HKH countries, China had the largest area of perennial snow and ice reduction of 10,654 km2, Nepal had the highest net perennial snow and ice reduction rate (31%). Among the river basins, the maximum net loss of perennial snow and ice cover between 2001 and 2021 was in the Indus (24.8%), followed by Brahmaputra (18.3%), and Tarim (15.7%). Our results confirm wide-spread loss of perennial snow and ice across the HKH region and provide both regionally consistent maps with derived area estimates at landform, national and basin-levels and methodology to continue monitoring snow and ice melt.
英文关键词	Landsat; Perennial snow and ice; Hindu-kush Himalayas; glaciers; Snowfields; Climate change
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing
WOS类目	Environmental Sciences ; Remote Sensing
WOS记录号	WOS:001218114200001
来源期刊	REMOTE SENSING APPLICATIONS-SOCIETY AND ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305239
作者单位	University System of Maryland; University of Maryland College Park; Lahore University of Management Sciences
推荐引用方式 GB/T 7714	Khan, Ahmad,Potapov, Peter,Hansen, Matthew C.,et al. Perennial snow and ice cover change from 2001 to 2021 in the Hindu-Kush Himalayan region derived from the Landsat analysis-ready data[J],2024,34.
APA	Khan, Ahmad.,Potapov, Peter.,Hansen, Matthew C..,Pickens, Amy H..,Tyukavina, Alexandra.,...&Ahmad, Jawairia.(2024).Perennial snow and ice cover change from 2001 to 2021 in the Hindu-Kush Himalayan region derived from the Landsat analysis-ready data.REMOTE SENSING APPLICATIONS-SOCIETY AND ENVIRONMENT,34.
MLA	Khan, Ahmad,et al."Perennial snow and ice cover change from 2001 to 2021 in the Hindu-Kush Himalayan region derived from the Landsat analysis-ready data".REMOTE SENSING APPLICATIONS-SOCIETY AND ENVIRONMENT 34(2024).