COVID-19 lockdowns show reduced pollution on snow and ice in the Indus River Basin.

Melting snow and ice supply water for nearly 2 billion people [J. S. Mankin, D.

Cloud Masking for Landsat 8 and MODIS Terra Over Snow-Covered Terrain: Error Analysis and Spectral Similarity Between Snow and Cloud.

Automated, reliable cloud masks over snow-covered terrain would improve the retrieval of snow properties from multispectral satellite sensors. The U.S.