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<p>As the Arctic undergoes rapid warming and sea ice continues to decline, Ocean-to-Ice Heat Flux (OIHF) plays a crucial role in regulating sea ice dynamics. This study investigates the seasonal variations in ocean-to-ice heat flux in north of the Fram Strait using the regional Arctic Ocean/sea ice reanalysis product from 1991 to 2020. The analysis reveals that the OIHF exhibits significant seasonal variability, with a pronounced peak during winter in north of the Fram Strait, driven by inflows of Atlantic water. Warm Atlantic water intrusion begins in October, reaches its peak in January and February, and results in a delayed increase in OIHF, with maximum flux observed 2–3 months later. These results highlight the significant role of Atlantic water inflows in influencing Arctic sea ice dynamics and emphasize the need for further investigation into the coupled ocean-atmosphere processes that govern seasonal fluctuations in OIHF.</p>

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Seasonal variations of ocean-to-ice heat flux in north of the Fram Strait, Arctic Ocean

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Yuang Liu,
  • Xiaoqiao Wang,
  • Jinfeng Ding,
  • Lujun Zhang

摘要

As the Arctic undergoes rapid warming and sea ice continues to decline, Ocean-to-Ice Heat Flux (OIHF) plays a crucial role in regulating sea ice dynamics. This study investigates the seasonal variations in ocean-to-ice heat flux in north of the Fram Strait using the regional Arctic Ocean/sea ice reanalysis product from 1991 to 2020. The analysis reveals that the OIHF exhibits significant seasonal variability, with a pronounced peak during winter in north of the Fram Strait, driven by inflows of Atlantic water. Warm Atlantic water intrusion begins in October, reaches its peak in January and February, and results in a delayed increase in OIHF, with maximum flux observed 2–3 months later. These results highlight the significant role of Atlantic water inflows in influencing Arctic sea ice dynamics and emphasize the need for further investigation into the coupled ocean-atmosphere processes that govern seasonal fluctuations in OIHF.