How accurate is accurate enough for measuring sea-level rise and variability

Benoit Meyssignac (), Michael Ablain, Adrien Guérou, Pierre Prandi, Anne Barnoud, Alejandro Blazquez, Sébastien Fourest, Victor Rousseau, Pascal Bonnefond, Anny Cazenave, Jonathan Chenal, Gerald Dibarboure, Craig Donlon, Jérôme Benveniste, Annick Sylvestre-Baron and Nadya Vinogradova
Additional contact information
Benoit Meyssignac: CNES, CNRS, IRD, Université Paul Sabatier
Michael Ablain: Magellium
Adrien Guérou: CLS
Pierre Prandi: CLS
Anne Barnoud: Magellium
Alejandro Blazquez: CNES, CNRS, IRD, Université Paul Sabatier
Sébastien Fourest: CNES, CNRS, IRD, Université Paul Sabatier
Victor Rousseau: Magellium
Pascal Bonnefond: SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, LNE
Anny Cazenave: CNES, CNRS, IRD, Université Paul Sabatier
Jonathan Chenal: IGN
Gerald Dibarboure: CNES
Craig Donlon: ESA
Jérôme Benveniste: ESA
Annick Sylvestre-Baron: CNES
Nadya Vinogradova: NASA

Nature Climate Change, 2023, vol. 13, issue 8, 796-803

Abstract: Abstract Sea-level measurements from radar satellite altimetry have reached a high level of accuracy and precision, which enables detection of global mean sea-level rise and attribution of most of the rate of rise to greenhouse gas emissions. This achievement is far beyond the original objectives of satellite altimetry missions. However, recent research shows that there is still room for improving the performance of satellite altimetry. Reduced uncertainties would enable regionalization of the detection and attribution of the anthropogenic signal in sea-level rise and provide new observational constraints on the water–energy cycle response to greenhouse gas emissions by improving the estimate of the ocean heat uptake and the Earth energy imbalance.

Date: 2023
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DOI: 10.1038/s41558-023-01735-z

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