Abstract
Abstract. Surface albedo, defined as the ratio of the upward to downward solar irradiance, is an important climate parameter in the surface energy budget. Among them, glacier albedo is the link between glaciers and the hydration process of climate and cold zones, and it is also an important factor restricting the development of distributed glacier energy-material balance model. Changes in the albedo of ice and snow can alter the energy balance of the entire geo-gas system and can also cause local and even global climate change. Glaciers in High Mountain Asia have experienced heterogeneous rates of loss since the 1970s. The positive feedback effect of ice and snow makes its albedo an important indicator of ice and snow surface mass balance. This study used partly Sentinel-3 level-1b data of High Mountain Asia in 2017, RGI (Randolph Glacier Inventory) 6.0 and SPP (Snow Properties Processor) developed by the ESA’s team to extract the region's mountain glacier albedo in SNAP (Sentinel Application Platform) environment. At present, the products of the whole year of 2017 have been produced, with a time resolution of one month and a spatial resolution of 300 m.
Highlights
High Asia, with the Qinghai-Tibet Plateau as the center, is a high mountain plateau in central Asia, which is known as the third largest cryosphere on earth besides the South and North Poles(Donlon et al, 2012)
Based on the above methods and data, we have completed the production of High Asian mountain glacier albedo products for the whole year of 2017
As a plug-in, the toolkit is available for users to download for free on ESA official website. Users can load it into SNAP and retrieve ice snow albedo based on sentinel-3 image through running software
Summary
High Asia, with the Qinghai-Tibet Plateau as the center, is a high mountain plateau in central Asia, which is known as the third largest cryosphere on earth besides the South and North Poles(Donlon et al, 2012). In this area, glacier melted with the speed about 150km3/y, about half of the melted water is fed to inland and arid rivers, and its glacier retreat contributes 20% to global sea level rise(Immerzeel et al, 2010). High Asian glaciers have a significant impact on global climate change, regional water cycle and ecological environment(Dehecq et al, 2019). It is an important mission for human to monitor some information which can reflect the changes of glacier
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