Patagonia Icefield melting observed by Gravity Recovery and Climate Experiment (GRACE)
Abstract
Using recently released reprocessed gravity solutions from the Gravity Recovery and Climate Experiment (GRACE), we estimate the ice loss rate for the Patagonia Icefield (PIF) of South America, for the period April 2002 through December 2006. After postglacial rebound and hydrological effects are corrected, the estimated rate is −27.9 ± 11 km 3 /year, equivalent to an average loss of ∼−1.6 m/year ice thickness change if evenly distributed over the entire PIF area. The estimated contribution to global sea level rise is 0.078 ± 0.031 mm/year. This is an independent confirmation of relatively large melting rate estimates from earlier studies employing topographic and cartographic data.
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Recent mass balance measurements consistently show an increasing ice loss from ∼15 Gt yr−1 between ∼1940-2000 to ∼25 Gt yr−1 between ∼2000-2012.
“Recent mass balance measurements in the Patagonian Icefields -e.g. the Shuttle-Radar Topography Mission (SRTM) or Gravity Recovery and Climate Experiment (GRACE) -often present discrepancies but consistently show an increasing ice loss from ∼ 15 Gt yr -1 between ∼ 1940-2000 to ∼ 25 Gt yr -1 between ∼ 2000-2012 (Aniya, 1996;Aniya et al., 1997;Rignot et al., 2003;Chen et al., 2007;Ivins et al., 2011”
From Fast uplift in the southern Patagonian Andes due to long- and short-term deglaciation and the asthenospheric window underneath (2024) · cites this paper as Chen et al., 2007
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References 24 · Cited by 166
- Authors
- Chen, J. L., Wilson, C. R., Tapley, B. D., Blankenship, D. D., & Ivins, E. R.
- Affiliations
- The University of Texas at Austin (US)
- University of Texas Institute for Geophysics (US)
- Jet Propulsion Laboratory (US)
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2007-11
- Volume
- 34
- Issue
- 22
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W1963786820
- Cited by
- 166
- References
- 24
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 9 · 2023: 6 · 2022: 7 · 2021: 9 · 2020: 10 · 2019: 11 · 2018: 16 · 2017: 6 · 2016: 10 · 2015: 5 · 2014: 9 · 2013: 11 · 2012: 14
- FWCI
- 6.29
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geophysical Research Letters (publishedVersion)
- Helmholtz Centre for Ocean Research Kiel (GEOMAR) (acceptedVersion)
- Publication Database GFZ (GFZ German Research Centre for Geosciences) (submittedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Geophysics and Gravity Measurements
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Cryospheric studies and observations
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
- Keywords
- ice mass balance, ice thickness change, sea level rise, ice sheet melting
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