Marine Heatwaves in Siberian Arctic Seas and Adjacent Region
Marine Heatwaves in Siberian Arctic Seas and Adjacent Region
复制标题
西伯利亚北冰洋及邻近地区的海洋热浪
DOI：
10.3390/rs13214436
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Marina A. Tarkhanova
中科院分区：
文献类型：
--
作者：
E. Golubeva;M. Kraineva;G. Platov;D. Iakshina;Marina A. Tarkhanova
利用分辨率为0.2 5×0.2 5∘的卫星获取的全球逐日海温资料，分析了2000年至2020年北冰洋的年际变化，揭示了北冰洋海温分布的极端事件。结果表明，21世纪第二个十年，西伯利亚北冰洋较第一个十年明显变暖，北冰洋海温的增加可以用海洋热浪的形式来考虑。分析了北冰洋热波的空间分布及其特征，结果表明，从2018年到2020年，表层增温扩展到拉普特夫海北部深水区75∘到81∘N。为了揭示海洋热波向北扩展的最重要的驱动力，我们使用了基于NCEP/NCAR再分析强迫的海冰和海洋模式的北冰洋三维数值模拟。对2000年至2020年北冰洋变率的模拟显示，喀拉海和拉普特夫海北部地区的海洋热浪及其强度不断增加，与冰盖的消失密切相关。对模式敏感性的一系列数值试验表明，影响北冰洋海冰消融和西伯利亚北冰洋以北温度异常形成的主要因素同样是大气的热力和动力效应。数值模拟也使我们能够检查其他物理机制的影响。其中包括海洋和冬季海冰的状态、快速冰川的形成和河流热流入。
We used a satellite-derived global daily sea surface temperature (SST) dataset with resolution 0.25 × 0.25∘ to analyze interannual changes in the Arctic Shelf seas from 2000 to 2020 and to reveal extreme events in SST distribution. Results show that the second decade of the 21st century for the Siberian Arctic seas turned significantly warmer than the first decade, and the increase in SST in the Arctic seas could be considered in terms of marine heatwaves. Analyzing the spatial distribution of heatwaves and their characteristics, we showed that from 2018 to 2020, the surface warming extended to the northern deep-water region of the Laptev Sea 75∘ to 81∘N. To reveal the most important forcing for the northward extension of the marine heatwaves, we used three-dimensional numerical modeling of the Arctic Ocean based on a sea-ice and ocean model forced by the NCEP/NCAR Reanalysis. The simulation of the Arctic Ocean variability from 2000 to 2020 showed marine heatwaves and their increasing intensity in the northern region of the Kara and Laptev seas, closely connected to the disappearance of ice cover. A series of numerical experiments on the sensitivity of the model showed that the main factors affecting the Arctic sea-ice loss and the formation of anomalous temperature north of the Siberian Arctic seas are equally the thermal and dynamic effects of the atmosphere. Numerical modeling allows us to examine the impact of other physical mechanisms as well. Among them were the state of the ocean and winter sea ice, the formation of fast ice polynias and riverine heat influx.
影响因子：
3.7
作者：
Oliver, Eric C. J.;Burrows, Michael T.;Smale, Dan A.
通讯作者：
Smale, Dan A.
影响因子：
16.6
作者：
Oliver ECJ;Donat MG;Burrows MT;Moore PJ;Smale DA;Alexander LV;Benthuysen JA;Feng M;Sen Gupta A;Hobday AJ;Holbrook NJ;Perkins-Kirkpatrick SE;Scannell HA;Straub SC;Wernberg T
通讯作者：
Wernberg T
影响因子：
30.7
作者：
Smale, Dan A.;Wernberg, Thomas;Moore, Pippa J.
通讯作者：
Moore, Pippa J.