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

IF 29.6 1区地球科学 Q1 ENVIRONMENTAL SCIENCES

Nature Climate Change Pub Date : 2023-08-03 DOI:10.1038/s41558-023-01735-z

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, Nadya Vinogradova

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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. Satellite radar altimetry enables the detection of sea-level changes by collecting data that have exceeded early expectations. This Perspective discusses potential advances that would enhance the data, allowing regional detection and attribution of sea-level change and improving ocean heat uptake estimates.

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测量海平面上升和变化的准确程度

雷达卫星测高法对海平面的测量已达到很高的准确度和精确度，从而能够探测全球平均海平面的上升，并将大部分上升率归因于温室气体排放。这一成就远远超出了卫星测高任务的最初目标。然而，最近的研究表明，卫星测高的性能仍有改进的余地。减少不确定性将使海平面上升人为信号的探测和归因区域化，并通过改进对海洋吸热和地球能量不平衡的估计，为水能量循环对温室气体排放的反应提供新的观测制约。卫星雷达测高通过收集超出早期预期的数据，实现了对海平面变化的探测。本 "视角 "将讨论可提高数据质量的潜在进展，以便对海平面变化进行区域探测和归因，并改进海洋吸热估算。

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来源期刊

Nature Climate Change ENVIRONMENTAL SCIENCES-METEOROLOGY & ATMOSPHERIC SCIENCES

CiteScore

40.30

自引率

1.60%

发文量

267

审稿时长

4-8 weeks

期刊介绍： Nature Climate Change is dedicated to addressing the scientific challenge of understanding Earth's changing climate and its societal implications. As a monthly journal, it publishes significant and cutting-edge research on the nature, causes, and impacts of global climate change, as well as its implications for the economy, policy, and the world at large. The journal publishes original research spanning the natural and social sciences, synthesizing interdisciplinary research to provide a comprehensive understanding of climate change. It upholds the high standards set by all Nature-branded journals, ensuring top-tier original research through a fair and rigorous review process, broad readership access, high standards of copy editing and production, rapid publication, and independence from academic societies and other vested interests. Nature Climate Change serves as a platform for discussion among experts, publishing opinion, analysis, and review articles. It also features Research Highlights to highlight important developments in the field and original reporting from renowned science journalists in the form of feature articles. Topics covered in the journal include adaptation, atmospheric science, ecology, economics, energy, impacts and vulnerability, mitigation, oceanography, policy, sociology, and sustainability, among others.