This study examines the artificial influence of increasing the SST resolution on the storm track over the North Pacific in ERA-Interim. Along with the mesoscale oceanic eddies and fronts resolved during the high-resolution-SST period, the low-level storm track strengthens northward, reaching more than 30% of the maximum values in the low-resolution-SST period after removing the influence of ENSO. The mesoscale structure firstly imprints on the marine atmospheric boundary layer, which then leads to changes in turbulent heat flux and near-surface convergence, forcing a secondary circulation into the free atmosphere, strengthening the vertical eddy heat, momentum and specific humidity fluxes, and contributing to the enhancement of the storm track. Results from a high-resolution atmospheric model further indicate the changes in the storm track due to the mesoscale SST and their relationship.

中文翻译：

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ERA-Interim 中增加 SST 分辨率对北太平洋风暴路径的影响

本研究考察了在 ERA-Interim 期间增加 SST 分辨率对北太平洋风暴轨迹的人为影响。随着高分辨率-海温期间解析的中尺度海洋涡旋和锋面，低层风暴轨迹向北增强，去除ENSO影响后达到低分辨率-海温期间最大值的30%以上. 中尺度结构首先压印在海洋大气边界层上，进而导致湍流热通量和近地表辐合的变化，迫使二次环流进入自由大气，加强垂直涡热、动量和比湿通量，并有助于到风暴轨道的增强。