Record Early Sea Ice Loss in Southeastern Hudson Bay in Spring 2024

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Geophysical Research Letters Pub Date : 2025-02-22 DOI:10.1029/2024GL112584

C. Soriot, J. Stroeve, A. Crawford

{"title":"Record Early Sea Ice Loss in Southeastern Hudson Bay in Spring 2024","authors":"C. Soriot, J. Stroeve, A. Crawford","doi":"10.1029/2024GL112584","DOIUrl":null,"url":null,"abstract":"<p>Hudson Bay seasonal sea-ice cover plays an important role in marine ecosystems and human activities. Spring 2024 witnessed a uniquely early southeastern opening, leading to basin-wide sea ice extent falling 5<span></span><math>\n <semantics>\n <mrow>\n <mi>σ</mi>\n </mrow>\n <annotation> $\\sigma $</annotation>\n </semantics></math> below the 1979–2023 average. Here, we show that a strong pressure gradient between high pressure over the Canadian Archipelago and low pressure to the south led to unusually strong and persistent winds from the east during May 2024. Consequently, the median sea ice opening date in the southeast was 31 days earlier than the 1979–2023 median, while sea ice opening in the west was delayed by 13 days. Early opening and warmer than average sea surface temperatures have extended the ice-free period to 202 days in southeastern Hudson Bay, with potentially dramatic consequences on the local marine ecosystem and contributed to the record low Arctic-wide sea ice extent by December 2024.</p>","PeriodicalId":12523,"journal":{"name":"Geophysical Research Letters","volume":"52 4","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GL112584","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geophysical Research Letters","FirstCategoryId":"89","ListUrlMain":"https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024GL112584","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Hudson Bay seasonal sea-ice cover plays an important role in marine ecosystems and human activities. Spring 2024 witnessed a uniquely early southeastern opening, leading to basin-wide sea ice extent falling 5 $σ$ below the 1979–2023 average. Here, we show that a strong pressure gradient between high pressure over the Canadian Archipelago and low pressure to the south led to unusually strong and persistent winds from the east during May 2024. Consequently, the median sea ice opening date in the southeast was 31 days earlier than the 1979–2023 median, while sea ice opening in the west was delayed by 13 days. Early opening and warmer than average sea surface temperatures have extended the ice-free period to 202 days in southeastern Hudson Bay, with potentially dramatic consequences on the local marine ecosystem and contributed to the record low Arctic-wide sea ice extent by December 2024.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

2024年春季哈德逊湾东南部创纪录的早期海冰损失

哈德逊湾季节性海冰覆盖在海洋生态系统和人类活动中发挥着重要作用。2024年春季，东南部出现了一个独特的早期开放，导致整个盆地的海冰范围比1979-2023年的平均值下降了5 σ $\sigma $。在这里，我们显示了加拿大群岛上的高压和南部的低压之间的强大压力梯度导致了2024年5月来自东部的异常强劲和持续的风。因此，东南部海冰开放的中位数日期比1979-2023年的中位数提前了31天，而西部海冰开放的中位数则推迟了13天。早开放和高于平均海面温度使哈德逊湾东南部的无冰期延长至202天，可能对当地海洋生态系统造成严重后果，并导致2024年12月北极海冰范围创历史新低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.