Sea surface temperature (SST) variability on decadal timescales has been associated with global and regional climate variability and impacts. The mechanisms that drive decadal SST variability, however, remain highly uncertain. Many previous studies have examined the role of atmospheric variability in driving decadal SST variations. Here we assess the strength of oceanic forcing in driving decadal SST variability in observations and state-of-the-art climate models by analyzing the relationship between surface heat flux and SST. We find a largely similar pattern of decadal oceanic forcing across all ocean basins, characterized by oceanic forcing about twice the strength of the atmospheric forcing in the mid- and high latitude regions, but comparable or weaker than the atmospheric forcing in the subtropics. The decadal oceanic forcing is hypothesized to be associated with the wind-driven oceanic circulation, which is common across all ocean basins.

中文翻译：

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强海洋强迫对全球海洋表面温度十年变化的影响

海面温度（SST）在十年时间尺度上的变化与全球和区域气候变化和影响有关。然而，驱动海温年代际变化的机制仍然高度不确定。先前的许多研究已经研究了大气变化在驱动年代际海温变化中的作用。在这里，我们通过分析地表热通量和海表温度之间的关系，评估了海洋强迫在观测和最先进的气候模型中驱动十年海表温度变化的强度。我们发现所有海洋盆地的年代际海洋强迫模式基本相似，其特征是中高纬度地区的海洋强迫强度约为大气强迫的两倍，但与亚热带地区的大气强迫相当或较弱。假设十年海洋强迫与风驱动的海洋环流有关，这在所有海洋盆地都很常见。