NASA GRACE/GRACE-FO mass anomaly relative to 16 April 2002; gigatonnes, 2002–2022.
Greenland ice-sheet mass variation is tracked from April 2002 to September 2022 using NASA GRACE and GRACE-FO observations. Values are gigatonnes relative to the 16 April 2002 baseline, with point uncertainty reported by NASA. The series moves from 0.00 gigatonnes at the baseline observation to -5,338.20 gigatonnes at the final observation. That endpoint represents a cumulative loss of 5,338.20 gigatonnes, with final-point uncertainty of ±51.63 gigatonnes.
Source 1: NASA Greenland and Antarctic Ice-Sheet Mass Records, 2002–2022
Publisher: NASA Office of STEM Engagement
Dataset/table: Greenland ice-sheet mass variation
Units: gigatonnes relative to 16 April 2002
Date checked: 2026-07-17
Evidence: Supports all 213 Greenland mass-anomaly and uncertainty points used in the brief.
Mass anomalies are relative to 16 April 2002, so negative values indicate net ice loss from that baseline. The source has no observations between June 2017 and June 2018 during the transition from GRACE to GRACE-FO.
The accompanying data preserves all 213 source observations, while the chart highlights 8 chronological milestone points for legibility. The GRACE-to-GRACE-FO observation gap remains unfilled.
All points use one NASA JPL mascon solution, one baseline, one gigatonne unit and one uncertainty convention.
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