Firn Retention (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 2022
• Subjects: Climate change processes; Greenland; Ice Sheet
• Online Access: https://dx.doi.org/10.11583/dtu.20237415; https://data.dtu.dk/articles/dataset/Firn_Retention_ESA_POLAR_4D_Greenland_Experimental_Dataset_/20237415

Total melt water retention in the firn (1958-2019). It is estimated either directly from the MAR RCM output, or by forcing the DTU firn model with the climate from the RCMs. Reference of these MAR simulations: Tedesco, M. and Fettweis, X.: Unprecedented atmospheric conditions (1948–2019) drive the 2019 exceptional melting season over the Greenland ice sheet , The Cryosphere, 14, 1209–1223, https://doi.org/10.5194/tc-14-1209-2020, 2020. Currently we provide two datasets in this experimental dataset: 1. The native model firn storage from MAR MARv3.11 includes a description of water retention in the firn based on the MAR snow model (CROCUS) which simulates a fixed number of snow, ice, or firn layers of variable thickness, and transfers mass and energy between them. The model densifies the snow/firn layers as a function of the weight of the overlying mass, and through liquid water retention. Penetrating meltwater is retained in the firn by a fraction of the pore space (irreducible water saturation) and ...