Continuity of Ice Sheet Mass Loss in Greenland and Antarctica From the GRACE and GRACE Follow‐On Missions

By Isabella Velicogna, Yara Mohajerani, G. A, F. Landerer, Jeremie Mouginot, B. Noel, Eric J. M. Rignot, Tyler Clark Sutterley, M. Broeke, M. Wessem and 1 more. Geophysical Research Letters, 2020

227 citations recorded by the source corpus.

We examine data continuity between the Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow‐On (FO) missions over Greenland and Antarctica using independent data from the mass budget method, which calculates the difference between ice sheet surface mass balance and ice discharge at the periphery. For both ice sheets, we find consistent GRACE/GRACE‐FO time series across the data gap, at the continental and regional scales, and the data gap is confidently filled with mass budget method data. In Greenland, the GRACE‐FO data reveal an exceptional summer loss of 600 Gt in 2019 following two cold summers. In Antarctica, ongoing high mass losses in the Amundsen Sea Embayment of West Antarctica, the Antarctic Peninsula, and Wilkes Land in East Antarctica cumulate to 2130, 560, and 370 Gt, respectively, since 2002. A cumulative mass gain of 980 Gt in Queen Maud Land since 2009, however, led to a pause in the acceleration in mass loss from Antarctica after 2016.

Subfields: Atmospheric Science, Oceanography, Pulmonary and Respiratory Medicine

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In Atmospheric Science

1. David Wiese
2. F. Landerer
3. D. Yuan
4. H. Save
5. Bryant D Loomis
6. M. Watkins
7. Srinivas V. Bettadpur
8. M. Tamisiea

In Oceanography

1. David Wiese
2. H. Save
3. Bryant D Loomis
4. Srinivas V. Bettadpur
5. M. Watkins
6. F. Landerer
7. D. Yuan
8. Frank Flechtner

Citations in the corpus

• Extending the Global Mass Change Data Record: GRACE Follow‐On Instrument and Science Data Performance (2020, methodology): “As for TWS, an assessment with surface mass balance (SMB) methods (Velicogna et al., 2020) and reanalysis (Ciracì et al., 2020) for ice caps and glaciers find no bias across the GRACE/GRACE‐FO gap.”