Articles | Volume 17, issue 2
Research article
16 Feb 2023
Research article |  | 16 Feb 2023

Evaluating Greenland surface-mass-balance and firn-densification data using ICESat-2 altimetry

Benjamin E. Smith, Brooke Medley, Xavier Fettweis, Tyler Sutterley, Patrick Alexander, David Porter, and Marco Tedesco

Data sets

NASA GSFC Firn Densification Model version 1.2.1 (GSFC-FDMv1.2.1) for the Greenland and Antarctic Ice Sheets: 1980-2022 (1.2.1 release 2) Brooke Medley, Thomas Neumann, H. Jay Zwally, Benjamin E. Smith, and C. Max Stevens

ATLAS/ICESat-2 L3B Annual Land Ice Height, Version 4 B. Smith, S. Dickinson, B. P. Jelley, T. A. Neumann, D. Hancock, J. Lee, and K. Harbeck

MEaSUREs Greenland Ice Sheet Velocity Map from InSAR Data, Version 2 I. Joughin, B. Smith, I. Howat, and T. Scambos

Short summary
We use repeated satellite measurements of the height of the Greenland ice sheet to learn about how three computational models of snowfall, melt, and snow compaction represent actual changes in the ice sheet. We find that the models do a good job of estimating how the parts of the ice sheet near the coast have changed but that two of the models have trouble representing surface melt for the highest part of the ice sheet. This work provides suggestions for how to better model snowmelt.