Passive microwave remote sensing snow water equivalent data set in high Asia

High Asia is a high-altitude region in Asia dominated by the Qinghai-Tibet Plateau. It is an important distribution area for snow in the middle and low latitudes. The dynamic changes of snow cover have an important impact on the water and energy cycle, climate and environmental changes in the region. Snow-covered snow water equivalent (SWE) products (such as ESA GlobSnow), which are widely used around the world, have data vacancies in high Asia, and some global algorithms are generally overestimated in high Asia. Based on the AMSR-E brightness temperature data, this data is based on the NASA standard algorithm and the improved algorithm of the Qinghai-Tibet Plateau with different underlying surfaces. Two sets of ASMR-E snow-water equivalent data sets from 2002 to 2011 in the Qinghai-Tibet Plateau were produced. The improved algorithm is verified and evaluated by the measured snow depth of the ground meteorological station, indicating that the accuracy of the improved algorithm of the Qinghai-Tibet Plateau has improved. In addition, the paper also comprehensively processes the SWE products based on MODIS daily cloud-free snow cover products and NASA snow algorithm and obtains a set of comprehensive data sets of microwave and optical snow water equivalents from 2003 to 2011. The three sets of snow water equivalent product data sets provide basic data support for scientific research in climate change, water, energy balance, environmental change and water use in high Asia.