The Intercomparison of Total Column Water Vapor over a Melting Glacier on the Greenland Ice Sheet Derived Using Spaceborne Sentinel-5P and High Spatial Resolution EnMAP Measurements

The paper is aimed at the retrieval of total column water vapor (TCWV) over a melting glacier using high spatial resolution hyperspectral measurements performed by the German EnMAP (Environmental Mapping and Analysis Program) satellite. Such measurements are important for understanding the intra-pixel variability of water vapor satellite products with coarser spatial resolution especially in regions with drastic changes in the water vapor abundances. The retrieved TCWV is compared with that derived using other spaceborne optical measurements such as performed by Sentinel-5P. The close correspondence of both retrievals has been found with a smaller variance over derived EnMAP TCWV values.