Total Basin Run Off (ESA POLAR+ 4D Greenland Experimental Dataset) ...

• Main Authors: Nielsen, Yassin Rasmus Bahbah, Simonsen, Sebastian Bjerregaard, Sørensen, Louise Sandberg
• Format: Dataset
• Language: unknown
• Published: Technical University of Denmark 2023
• Subjects: Climate change processes; Greenland
• Online Access: https://dx.doi.org/10.11583/dtu.20237436.v3; https://data.dtu.dk/articles/dataset/Total_Basin_Run_Off_ESA_POLAR_4D_Greenland_Experimental_Dataset_/20237436/3

The total monthly runoff (2014-2021), both surface and basal, of five drainage basins in Greenland; NEGIS, Northern Lakes, Southern Lakes, Store, and Watson. The run off is estimated by summing the Surface Melt, Firn Retention, Supraglacial Change and Subglacial Runoff into monthly basin scale estimates. 1. Surface water was computed from the chosen RCM on a monthly basis by summing the surface melt and the liquid precipitation (rain fall). 2. Firn Retention is computed by subtracting the RCM runoff from the RCM surface melt in the snow/firn-covered part of the drainage basins 3. Supraglacial change volume estimates were determined via the following methodology by Lancaster University. Supraglacial lake extent were delineated using RT algorithm to classify water within S2 images. Lake depths were calculated using a radiative transfer model (section 2.2.6.1 ATBD). Lake depth was determined using Sentinel 2 red band imagery (Band 4). Total lake volume was calculated by multiplying lake depths by lake area for ...