Extended Data Fig. 7: Greenland meltwater run-off estimated from model and satellite data.
From: Modern temperatures in central–north Greenland warmest in past millennium
Shown are the meltwater run-off anomalies for MAR3.5.222 forced by 20CRv223 (1950–2012; blue), MAR3.12 forced by ERA573 (1950–2021; green) and as estimated based on GRACE/GRACE-FO42,74 data (2002–2020 ad; black). Anomalies for MAR3.5.2 and MAR3.12 are with respect to the years 1961–1990. GRACE/GRACE-FO meltwater run-off anomalies represent the annual mass change measured by GRACE/GRACE-FO minus the net snow accumulation from MAR3.12 and the ice-dynamic discharge from InSAR74. An offset was removed to reconcile the mean meltwater run-off anomaly from MAR3.12 and GRACE/GRACE-FO in the period 2002–2020. GRACE/GRACE-FO uncertainties (2σ) are propagated empirical uncertainties of the mass change only, and do not contain uncertainties associated with the subtracted components net accumulation and ice-dynamic discharge. The reconciliation of the mean mass budget from GRACE/GRACE-FO and details on the GRACE/GRACE-FO data as well as the surface mass balance models are provided in ref. 42.
