Lei Zheng, Xinyi Shang, Michiel R. van den Broeke, Brice Noël, Xichen Li, Xavier Fettweis, Qi Liang, Kang Wang, Jiping Liu, Xiao Cheng
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引用次数: 0
Abstract
Surface meltwater production influences the contribution of ice sheets to global sea-level change. Ice-sheet-wide meltwater production has thus far primarily been quantified by regional climate models. Here we present a 31-year (1992–2023) time series of daily satellite-observed surface melt flux for the Greenland and Antarctic ice sheets. The annual meltwater volume in Greenland has significantly increased, with intensified melt in the northern basins dominated by a negative North Atlantic Oscillation and elevated melt flux in western basins driven by the decline in Arctic sea-ice. In East Antarctica, high melt rates since 2000 are attributed to warm air incursions from the Southern Ocean due to anomalous atmospheric circulations associated with a negative Southern Annular Mode and the recovery of the Antarctic ozone hole. This region, previously less prone to surface melt, has become a melt hotspot, potentially leading to meltwater ponding and future ice shelf destabilization.
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.
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Topics covered in the journal include adaptation, atmospheric science, ecology, economics, energy, impacts and vulnerability, mitigation, oceanography, policy, sociology, and sustainability, among others.
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