Page 14 - 《高原气象》2025年第5期
P. 14

高     原      气     象                                 44 卷
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                           Review of Research on Air-sea Turbulent Heat Exchange

                                             Over Polar Sea Ice Regions


                                                                         1
                                  ZHANG Gong , HAN Bo , YANG Qinghua , CHEN Fenghao      1
                                               1, 2
                                                          1
                           (1. School of Atmospheric Sciences, Sun Yat-Sen University, Southern Marine Science and Engineering
                                      Guangdong Laboratory (Zhuhai), Zhuhai  519082, Guangdong, China;
                                       2. Jiangxi academy of forestry, Nanchang  330013, Jiangxi, China)

             Abstract: Global warming has led to rapid changes in the sea ice of the Antarctic and Arctic, triggering a num‐
             ber of climate feedbacks. Turbulent heat exchange between the polar seas and the air plays an important role in
             these feedbacks. Solar radiation, as the main energy source at the polar sea surface, is mainly used for sea ice
             melting and air-sea heat exchange, but the higher albedo of sea ice results in low radiation absorption. Air-sea
             heat exchange is influenced by temperature and humidity gradients between the sea surface and the atmosphere,
             with sensible heat dominating at the sea-ice edge and latent heat farther from the sea ice. In the Arctic, air-sea
             heat exchange is dominated by sensible heat, whereas in the Antarctic it is dominated by latent heat. The air-sea
             heat fluxes at the north and south polar seas vary seasonally. Sea ice can also inhibit air-sea heat exchange to
             some extent. Accurate parameterization of the turbulent heat exchange between the sea and the atmosphere in the
             sea ice regions is crucial for simulating air-sea interactions, however, in situ observations remain extremely rare
             due to limitations of the polar environment, and accurately representing the turbulent air-sea exchange in polar
             oceans  remains  a  challenge. In  the  future,  the  network  of  air-sea  flux  measurements  in  polar  seas  should  be
             strengthened, especially in the marginal ice zone, which are necessary and crucial for a deep understanding of
             the role of air-sea interactions in polar regions on global climate change, and for reducing the uncertainty in cli‐
             mate models. Secondly, the dynamics and thermal properties of ice must be fully considered to optimize the pa‐
             rameterization scheme or develop new models to improve the simulation accuracy. Furthermore, the influence of
             waves on the air-sea heat exchange in the sea ice region should be clarified to fill the research gaps. Finally, the
             contribution of the air-sea heat exchange to climate change in the polar regions should be evaluated further to im‐
             prove the understanding of the role of polar oceans in climate change.
             Key words: air-sea turbulence exchange; energy balance; marginal ice zone; ship-based observation
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