Abyssal Ocean Warming and Salinification after Weddell Polynyas in the GFDL CM2G Coupled Climate Model
Abyssal Ocean Warming and Salinification after Weddell Polynyas in the GFDL CM2G Coupled Climate Model
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GFDL CM2G 耦合气候模型中威德尔冰间湖后的深海变暖和盐化
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
J. Sarmiento
中科院分区：
文献类型：
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作者：
Hannah Zanowski;R. Hallberg;J. Sarmiento
在NOAA地球物理流体动力学实验室（GFDL）的耦合气候模式CM 2G中，探讨了威德尔海冰穴在建立深海特性中的作用。使用统计复合分析的30多个冰间湖事件发生在2000年长的工业化前的控制运行，温度，盐度和水质量的变化与复合事件进行量化。在复合冰间湖停止之后的时间段内，即“恢复”期间，南大洋海盆在4200米以下出现了0.002° C至0.019°C的十年-1变暖。温度和盐度的变化在冰穴形成区附近的南大洋和南大西洋最强烈。模型结果与深海温度观测结果的比较表明，1970年代威德尔波林尼亚的恢复可能占南大洋深海近期变暖的10% ± 8%。对于个别南大洋盆地，这一比例低至6% ± 11%，高至34% ± 13%。
AbstractThe role of Weddell Sea polynyas in establishing deep-ocean properties is explored in the NOAA Geophysical Fluid Dynamics Laboratory’s (GFDL) coupled climate model CM2G. Using statistical composite analysis of over 30 polynya events that occur in a 2000-yr-long preindustrial control run, the temperature, salinity, and water mass changes associated with the composite event are quantified. For the time period following the composite polynya cessation, termed the “recovery,” warming between 0.002° and 0.019°C decade−1 occurs below 4200 m in the Southern Ocean basins. Temperature and salinity changes are strongest in the Southern Ocean and the South Atlantic near the polynya formation region. Comparison of the model results with abyssal temperature observations reveals that the 1970s Weddell Polynya recovery could account for 10% ± 8% of the recent warming in the abyssal Southern Ocean. For individual Southern Ocean basins, this percentage is as little as 6% ± 11% or as much as 34% ± 13%.
南极洲周围的深海变暖加强了大西洋翻转环流
影响因子：
5.2
作者：
Patara L;Böning C.W.
通讯作者：
Böning C.W.