Surface and subsurface conditions at nine Greenland Climate Network (GC-Net) weather station sites, 1998-2017

• Main Author: Baptiste Vandecrux
• Format: Dataset
• Language: unknown
• Published: Arctic Data Center 2018
• Subjects: Greenland; Firn; Ice; Snow; Weather station; Surface mass balance; Surface energy budget; Meltwater; Infiltration; Percolation; Firn compaction; Densification; Arctic; Crawford; Crawford Point; Ice Sheet
• Online Access: https://search.dataone.org/view/urn:uuid:e2165849-2b45-40d1-93a6-b28de07575d2

Recent Arctic atmospheric warming induces more frequent surface melt in the accumulation area of the Greenland ice sheet. This increased melting modifies the near-surface firn structure and density and may reduce the firn’s capacity to retain meltwater. Yet, few long-term observational records are available to determine the evolution and drivers of firn density. In Vandecrux et al. (2018, DOI: 10.1029/2017JF004597), we compiled and gap-filled Greenland Climate Network (GC-Net) automatic weather station data from Crawford Point, Dye-2, NASA-SE and Summit between 1998 and 2015. These records then forced a coupled surface energy balance and firn evolution model. In this data package we firstly provide, for each site, our calculations of surface conditions: hourly 2 m air temperature and humidity, 10 m wind speed as well as energy and mass fluxes at the surface. Secondly we give the simulated firn density along with the contributions of its climatic drivers.