ocean trough
2.The higher SST in the eastern ocean of the Philippine and lower SST in the eastern area of the central equator Pacific will lead to a weaker western Pacific high in the lower layer, deeper oceanic trough of the central and eastern Pacific in higher layer, stronger westerly in tropical Indian Ocean, stronger Walker circulation in the region of the Indian-Pacific Ocean.
3.Before the abrupt, the latent heat anomaly is positive in the equatorial Pacific Ocean, the East Siberian High and the Aleutian Low become weaker, the north range of the East Asian Trough strengthen and the south range weaken, and so the prevalent wind is from north in northeast of China, where the air temperature goes down, while the prevalent wind is from south in South China, where the air temperature rises up.
4.After the abrupt, the latent heat anomaly is negative in the Kuroshio Extension and positive in the northeast of the Pacific Ocean, the Siberian High and the Aleutian Low weaken, the north range of the East Asian Trough strengthen and the south range weaken, the ridge over the Ural mountain weaken, and so the prevalent wind is from south in the east of China and HETAO area, where the air temperature rises up.
