THE INFLUENCE OF LAND AND SEA SURFACE TEMPERATURE DIFFERENCE ON WATER VAPOR TRANSPORT AND PRECIPITATION SPATIAL DISTRIBUTION IN SUMMER OF EAST CHINA
ZHAO Yang
WANG Yu-hong
HUANG Wu-bin
HUANG Yu-xia
QIN Min-hua
Abstract：Using 1981-2010 ERA Interim analysis and 30 years of daily rainfall data in the region of China,this study,with correlation calculation method,studied the correlation of the temperature difference between land surface and ocean surface (TD) with column vapor transport flux and East Asia areas of high temperature response.The results showed that the TD and precipitation in the summer months have two high correction areas,one in the Northwest and North China and the other in the South China and south of the Yangtze River,and it is always in a significant state in the years of 1981-2010.In summer,TD has been present from the 1990s up to now with increasing trends.Large differences exist in anomalously low and high vapor transport flux anomaly,and in the years of large differences,vapor mainly comes from two converging flows,from the northeast China to the south and from the eastern ocean to the west,and in the years of small differences,vapor transport flux anomaly comes from the ocean east off China to the middle and eastern China before flowing towards the north and south respectively.In summer,TD and vapor transport flux show a negative phase related area,and that vapor transport flux and East Asia temperature have two negative phase related areas.This proves that the larger TD,the greater the column vapor transport flux in the meridional direction,and the bigger the temperature with two high correction areas.A "high-strong-high" temperature-vapor flux-temperature response to each other is formed.The correlation between sea surface temperature difference in summer and temperature along the coast's surface is obvious.The water vapor transport in summer can be predicted to some degree by surface temperature along the coast in spring.
Keywords：land and sea surface temperature differencecorrelation relationshipcolumn vapor transport flux"high-strength-high" response mechanism
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 822-830 )