Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic

Abstract Satellite observations provide valuable information on the rapidly increasing marine heatwaves over the Arctic Ocean, yet current assessments of these events lack reliability because the satellite-based temperature in ice-covered regions heavily relies on ice conditions. Here we compared th...

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Main Authors: Xuewei Zhang, Ning Zhao, Zhijun Dai, Zhen Han
Format: Article
Language:English
Published: Nature Portfolio 2025-01-01
Series:Communications Earth & Environment
Online Access:https://doi.org/10.1038/s43247-025-01997-9
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author Xuewei Zhang
Ning Zhao
Zhijun Dai
Zhen Han
author_facet Xuewei Zhang
Ning Zhao
Zhijun Dai
Zhen Han
author_sort Xuewei Zhang
collection DOAJ
description Abstract Satellite observations provide valuable information on the rapidly increasing marine heatwaves over the Arctic Ocean, yet current assessments of these events lack reliability because the satellite-based temperature in ice-covered regions heavily relies on ice conditions. Here we compared the marine heatwaves derived from two commonly used satellite products to evaluate the potential influences of sea ice in the pan-Arctic. We found inconsistent behaviors of marine heatwaves in both mean fields and temporal variations on interannual and seasonal timescales using two datasets, which became even larger in recent years when they showed opposite tendencies over regions with higher ice concentrations (>50%). Our findings revealed our knowledge of marine heatwaves in the Arctic is facing challenges due to the large influences of sea ice and datasets that were ignored in previous studies, highlighting an urgent need for in situ observations and consistent and reliable long-time datasets for the warming Arctic.
format Article
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institution Kabale University
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publishDate 2025-01-01
publisher Nature Portfolio
record_format Article
series Communications Earth & Environment
spelling doaj-art-2e97c4b726c143bfbe5b6ff06efadfc82025-01-12T12:41:09ZengNature PortfolioCommunications Earth & Environment2662-44352025-01-016111010.1038/s43247-025-01997-9Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-ArcticXuewei Zhang0Ning Zhao1Zhijun Dai2Zhen Han3State Key Laboratory of Estuarine and Coastal Research, East China Normal UniversityCenter for Coupled Ocean-Atmosphere Research, Research Institute for Global Change, Japan Agency for Marine-Earth Science and TechnologyState Key Laboratory of Estuarine and Coastal Research, East China Normal UniversityCollege of Oceanography and Ecological Science, Shanghai Ocean UniversityAbstract Satellite observations provide valuable information on the rapidly increasing marine heatwaves over the Arctic Ocean, yet current assessments of these events lack reliability because the satellite-based temperature in ice-covered regions heavily relies on ice conditions. Here we compared the marine heatwaves derived from two commonly used satellite products to evaluate the potential influences of sea ice in the pan-Arctic. We found inconsistent behaviors of marine heatwaves in both mean fields and temporal variations on interannual and seasonal timescales using two datasets, which became even larger in recent years when they showed opposite tendencies over regions with higher ice concentrations (>50%). Our findings revealed our knowledge of marine heatwaves in the Arctic is facing challenges due to the large influences of sea ice and datasets that were ignored in previous studies, highlighting an urgent need for in situ observations and consistent and reliable long-time datasets for the warming Arctic.https://doi.org/10.1038/s43247-025-01997-9
spellingShingle Xuewei Zhang
Ning Zhao
Zhijun Dai
Zhen Han
Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic
Communications Earth & Environment
title Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic
title_full Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic
title_fullStr Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic
title_full_unstemmed Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic
title_short Satellites reveal different stories of marine heatwaves in the sea-ice-covered pan-Arctic
title_sort satellites reveal different stories of marine heatwaves in the sea ice covered pan arctic
url https://doi.org/10.1038/s43247-025-01997-9
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AT zhijundai satellitesrevealdifferentstoriesofmarineheatwavesintheseaicecoveredpanarctic
AT zhenhan satellitesrevealdifferentstoriesofmarineheatwavesintheseaicecoveredpanarctic