Recent research highlights the influence of the Atlantic Niño on the likelihood of strong hurricanes forming in the tropical Atlantic. This phenomenon increases the risk of hurricanes impacting the Caribbean islands and the United States. A recent study identifies two distinct types of the Atlantic Niño, with warming concentrated in the central (CA) and eastern (EA) equatorial Atlantic, respectively. By analyzing observational and reanalysis data, we investigated how these two types of the Atlantic Niño affect hurricane activity. The findings reveal that the CA Niño enhances hurricane frequency south of 20°N, while the CA Niña promotes hurricanes north of 20°N. The CA Niño exerts a more significant influence on hurricanes than the EA Niño, primarily by affecting wind shear, relative vorticity, and vertical velocity. In contrast, the EA Niño mainly impacts relative humidity and African Easterly Waves. These insights could improve the accuracy of seasonal hurricane forecasts.

中文翻译：

---

中大西洋和东大西洋尼诺对热带北大西洋飓风活动的不同影响


最近的研究强调了大西洋尼诺现象对热带大西洋形成强飓风的可能性的影响。这种现象增加了飓风影响加勒比群岛和美国的风险。最近的一项研究确定了两种不同类型的大西洋尼诺现象，变暖分别集中在赤道大西洋中部 （CA） 和东部 （EA）。通过分析观测和再分析数据，我们研究了这两种类型的大西洋尼诺现象如何影响飓风活动。研究结果表明，CA Niño 增强了 20°N 以南的飓风频率，而 CA Niña 促进了 20°N 以北的飓风。 CA Niño 对飓风的影响比 EA Niño 更大，主要是通过影响风切变、相对涡度和垂直速度。相比之下，EA Niño 主要影响相对湿度和非洲东风波。这些见解可以提高季节性飓风预报的准确性。