Observations show that sea surface temperatures along the Gulf Stream and the Kuroshio Current tend to synchronize at decadal time scales. This synchronization, which we refer to as the boundary current synchronization (BCS), is reproduced in global climate models with high spatial resolution. Both in observations and model simulations, BCS is associated with meridional migrations of the atmospheric jet stream. Changes in the strength and path of the ocean currents associated with the jet shifts lead to the synchronicity of surface temperatures. Numerical simulations using a conceptual model and an atmospheric general circulation model are consistent with a notion that BCS is an interbasin air-sea coupled mode. Air temperature patterns similar to the one associated with BCS have been repeatedly observed, including in July of 1994 and 2018.

中文翻译：

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墨西哥湾流和黑潮是同步的

观测表明，沿墨西哥湾流和黑潮的海面温度往往在十年时间尺度上同步。这种同步，我们称之为边界电流同步（BCS），在具有高空间分辨率的全球气候模型中重现。在观测和模型模拟中，BCS 都与大气急流的经向迁移有关。与射流变化相关的洋流强度和路径的变化导致表面温度的同步性。使用概念模型和大气环流模型的数值模拟与 BCS 是跨流域海气耦合模式的概念是一致的。已反复观察到与 BCS 相关的气温模式，包括 1994 年 7 月和 2018 年 7 月。