Walker circulation has positive feedback effectto to El Nnino

This article take 1982,El Nino as the object of study,take normal year in 1980 as quite standard,utilized the GrADS cartography method,drew during for two years 200hPa and the 500hPa upper air westerlies,the underlying 850hPa east wind,as well as graphs and so on vertical velocity circulation and sea-level temperature,and gradually comparative analysis each event in had in the time successively relations and correlational.Obtains east the Walker circulation the lag,the part surmounted the Andes under the westerly wind function,the Andes prevents the Walker circulation to return to draws back,urges on the Pacific Ocean the east wind to weaken,west piled up the hot water eastward expansion,caused the sea level elevation of temperature.The sea level elevates temperature intensifies the rise,the more air current overstepping summit,the east wind continues to reduce,warming exceptionally strengthens,El Nino eruption.The Andes mountain range has in the process to the return Walker circulation impediment in the El Nino,plays the regeneration role.