Analysis on the Influence of Tibetan Plateau Thermal Anomalies to Meteorological Elements in Sichuan and Neighboring Areas

By using variance analysis method, it discussed the influence of foregoing uncommon atmosphere heat over Plateau to main flood season's potential height, relative humidity, vertical velocity field and changes in wind field in Sichuan and neighboring regions.Resultsshow that the meteorological elements will change significantly in Sichuan and neighboring regions in later year when there is unusual atmospheric heat over the plateau.When there is foregoing strong surface heat over Plateau, the Northeast cold vortex will be strong in the later May and June and the Tibetan High will be significantly stronger in later July to September.At the same time, the Subtropical Pacific High's position will be easterly than normal.When there is foregoing weak surface heat over Plateau, the Hetao westerly trough is stronger in next year and the Tibetan High pressure will be significantly weaker.The results also show that the vertical velocity and the wind field will be abnormal in main flood season in later year when there is unusual changes of heat field in Plateau.The result is a good for understanding the influence of Tibetan Plateau in weather and climate change to Sichuan and surrounding areas.