Unraveling Arctic Sea Ice Response to Atmospheric Rivers—Insights From Sea Ice Modeling

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2025-04-23 DOI:10.1029/2025GL115152

Pengfei Zhang, Patrick C. Taylor, Melinda Webster, David A. Bailey, Qinghua Ding, Laifang Li

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Abstract

Atmospheric rivers (ARs) in winter can induce significant melting of sea ice as they approach the ice cover. However, due to the complex physical properties of sea ice, the specific processes within the ice pack that are responsible for its response to ARs remain poorly understood. This study aims to shed light on this question using a stand-alone sea ice model forced by observed atmospheric boundary conditions. The findings reveal that the AR induced ice melt and hindered ice growth in the marginal seas are attributed to a combination of thermodynamic and dynamic processes. The AR-wind transports ice floes from the marginal seas back to the central Arctic dynamically, resulting in a thickening of the ice cover in that region. Among the thermodynamic processes, reduced congelation growth (54%–56%), enhanced basal melting (17%–26%), and inhibited snow-ice formation (11%–21%) play major roles in the sea ice loss in the marginal seas.

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解开北极海冰对大气河流的响应——来自海冰模型的见解

冬季的大气河流（ARs）在接近冰盖时会导致海冰大量融化。然而，由于海冰的物理特性非常复杂，人们对冰群内部导致其对 AR 反应的具体过程仍然知之甚少。本研究旨在利用观测到的大气边界条件强迫下的独立海冰模型来揭示这一问题。研究结果表明，AR 引起的边缘海冰层融化和冰层生长受阻是热力学和动力学过程共同作用的结果。AR 风以动态方式将浮冰从边缘海运回北极中部，导致该地区冰盖增厚。在热动力过程中，凝结生长减少（54%-56%）、基底融化增强（17%-26%）和雪冰形成受抑制（11%-21%）是边缘海海冰损失的主要原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.