Earlier studies in the Northeast Pacific (NEP) suggest that the local and remote sea level responses are important for the large‐scale, low‐frequency sea level variability, but the relative importance of the two processes remains unclear. In this study, we develop a novel sea level model driven by wind, buoyancy and eddy forcing to examine their relative roles in the NEP. Based on the new model, a diagnostic equation for sea level that is an alternative to the conventional method of characteristics is formed. The wind, buoyancy and eddy forcing account for the sea level variability in different regions. Sea level variability is primarily controlled by the wind forcing in the central to the northeast of the NEP, by the local buoyancy forcing in the southeast region between 210°E and 230°E, and by the eddy forcing in the southwest of the NEP. In addition, the diagnosis demonstrates that the local sea level response is more important than the remote response over most of the NEP, while the remote sea level response could play an important role in the southwest portion of the NEP.

中文翻译：

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东北太平洋大型低频海平面变化的诊断

东北太平洋地区（NEP）的早期研究表明，本地和偏远海平面响应对于大规模，低频海平面可变性很重要，但是这两个过程的相对重要性仍不清楚。在这项研究中，我们开发了一个由风，浮力和涡流强迫驱动的新颖海平面模型，以研究它们在NEP中的相对作用。在新模型的基础上，形成了可替代传统特征方法的海平面诊断方程。风，浮力和涡流是造成不同地区海平面变化的原因。海平面的变化主要受NEP东北中部的风强迫，东南地区210°E和230°E之间的局部浮力强迫以及NEP西南的涡流强迫控制。