Articles | Volume 17, issue 4
Research article
17 Apr 2023
Research article |  | 17 Apr 2023

Characteristics of the 1979–2020 Antarctic firn layer simulated with IMAU-FDM v1.2A

Sanne B. M. Veldhuijsen, Willem Jan van de Berg, Max Brils, Peter Kuipers Munneke, and Michiel R. van den Broeke

Data sets

Gridded surface elevation changes from multi-mission satellite altimetry 1978-2017 Ludwig Schröder, Martin Horwath, Reinhard Dietrich, Veit Helm, Michiel R. van den Broeke, and Stefan R. M. Ligtenberg

Model code and software

IMAU-FDM v1.2G GDM release (v1.2G) Max Brils, Peter Kuipers Munneke, Willem Jan Van de Berg, and Michiel Van den Broeke

Short summary
Firn is the transition of snow to glacier ice and covers 99 % of the Antarctic ice sheet. Knowledge about the firn layer and its variability is important, as it impacts satellite-based estimates of ice sheet mass change. Also, firn contains pores in which nearly all of the surface melt is retained. Here, we improve a semi-empirical firn model and simulate the firn characteristics for the period 1979–2020. We evaluate the performance with field and satellite measures and test its sensitivity.