26 Apr 2021

26 Apr 2021

Review status: this preprint is currently under review for the journal ESSD.

Greenland ice sheet mass balance from 1840 through next week

Kenneth D. Mankoff1, Xavier Fettweis2, Peter L. Langen3, Martin Stendel4, Kristian K. Kjledsen1, Nanna B. Karlsson1, Brice Noël5, Michiel R. van den Broeke5, Wiliam Colgan1, Sebastian B. Simonsen6, Jason E. Box1, Anne Solgaard1, Andreas P. Ahlstrøm1, Signe Bech Andersen1, and Robert S. Fausto1 Kenneth D. Mankoff et al.
  • 1Department of Glaciology and Climate, Geological Survey of Denmark and Greenland (GEUS), Copenhagen, Denmark
  • 2SPHERES research unit, Department of Geography, University of Liège, Liège, Belgium
  • 3Department of Environmental Science, iClimate, Aarhus University, Roskilde, Denmark
  • 4Department of Climate and Arctic, Danish Meteorological Institute (DMI), Copenhagen, Denmark
  • 5Institute for Marine and Atmospheric Research, Utrecht University, The Netherlands
  • 6Geodesy and Earth Observation, DTU Space, Technical University of Denmark, Lyngby, Denmark

Abstract. The mass of the Greenland ice sheet is declining as mass gain from snowfall is exceeded by mass loss from surface meltwater runoff, marine-terminating glacier calving and submarine melting, and basal melting. Here we use the input/output (IO) method to estimate mass change from 1840 through next week. Mass gains come from three regional climate models (RCMs; HIRHAM/HARMONIE, MAR, and RACMO) and a semi-empirical surface mass balance (SMB) model. Mass losses come from the RCMs, a statistical SMB model, ice discharge at marine terminating glaciers, and ice melted at the base of the ice sheet. From these products we provide an annual estimate of GIS mass balance from 1840 through 1985 and a daily estimate at sector and region scale from 1986 through next week. Compared to other mass balance estimates, this product updates daily, has higher temporal resolution, and is the first IO product to include the basal mass balance which is a source of an additional ~8 % mass loss. Our results demonstrate an accelerating GIS-scale mass loss and general agreement among six other products. Results from this study are available at (Mankoff et al., 2021).

Kenneth D. Mankoff et al.

Status: open (until 21 Jun 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-131', Anonymous Referee #1, 14 May 2021 reply

Kenneth D. Mankoff et al.

Data sets

Greenland ice sheet mass balance from from 1840 through next week Mankoff, Ken; Fettweis, Xavier; Solgaard, Anne; Langen, Peter; Stendel, Martin; Noël, Brice; van den Broeke, Michiel R.; Karlsson, Nanna; Box, Jason E.; Kjeldsen, Kristian

Kenneth D. Mankoff et al.


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Short summary
We estimate the daily mass balance, and its components (surface, marine, and basal mass balance) for the Greenland ice sheet. Our time series begins in 1840 and has annual resolution through 1985, and then daily from 1986 through next week. Results are provided for the entire GIS, or by commonly-used regions or sectors. This is the first input/output mass balance estimate to include the basal mass balance.