Ice sheet mass flow and balance with constituent terms 2010–19

Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung

Beitragende

  • Kenneth D. Mankoff - , NASA Goddard Institute for Space Studies, Autonomic Integra, LLC (Autor:in)
  • Chad A. Greene - , California Institute of Technology (CALTECH) (Autor:in)
  • Alex S. Gardner - , California Institute of Technology (CALTECH) (Autor:in)
  • Benjamin Davison - , University of Sheffield (Autor:in)
  • Désirée Treichler - , University of Oslo (Autor:in)
  • William Hardy Kochtitzky - , University of New England (Autor:in)
  • Brice Van Liefferinge - , Université libre de Bruxelles (ULB) (Autor:in)
  • Genyu Wang - , Nanjing University (Autor:in)
  • Chang Qing Ke - , Nanjing University (Autor:in)
  • Xavier Fettweis - , University of Liege (Autor:in)
  • Thorben Döhne - , Professur für Geodätische Erdsystemforschung (Autor:in)
  • Robert S. Fausto - , Geological Survey of Denmark and Greenland (Autor:in)
  • Damien Ringeisen - , NASA Goddard Institute for Space Studies, Columbia University, Environment and Climate Change Canada (ECCC) (Autor:in)

Abstract

Ice sheet mass loss is typically provided for grounded ice, because changes in floating ice are more difficult to measure and contribute minimally to sea level rise. However, gross freshwater mass flow rate across ice sheet boundaries, including floating ice, is a better metric of ice sheet health. Here, we present total mass flows across ice sheet boundaries for both the Greenlandic and Antarctic ice sheets and their peripheral glaciers from 2010 through 2019. In addition to total mass flow, we provide constituent terms and gross rather than net values, including components that combine to provide surface mass balance. Ice mass loss in Greenland is 330 ±50 Gt yr-1 which is ∼30% larger than the 255 ±40 Gt yr-1 grounded ice mass loss estimates that neglect floating ice changes. Ice mass loss in Antarctica is 450 ±270 Gt yr-1 which is ∼2.4x the 190 ±115 Gt yr-1 grounded ice mass loss estimates. Freshwater mass flow rate from Greenland is ∼1065 ±120 Gt yr-1 or ∼3x mass loss (∼4x grounded mass loss), and from Antarctica is ∼3110 ±1515 Gt yr-1, or ∼7x mass loss (∼16x grounded mass loss).

Details

OriginalspracheEnglisch
Aufsatznummere131
FachzeitschriftJournal of Glaciology
Jahrgang71
Frühes Online-Datum3 Nov. 2025
PublikationsstatusVeröffentlicht - 2025
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-1917-2027/work/229893281

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • glacier flow, ice-sheet mass balance, surface mass budget