Abstract:Based on monthly spring and autumn precipitation data during 1961-2010 from 73 meteorological stations in Hebei province and its vicinity, as well as the NCEP/NCAR reanalysis data during the same period, the variations of spring and autumn precipitation anomaly in Hebei province and its possible relationship with the middle and low level circulation are analyzed by using Singular Value Decomposition (SVD) analysis method. Results indicate that the uniformly dry/wet is the most common pattern for the spatial distribution of spring and autumn rainfall in Hebei, and the second pattern is a seesaw of dry/wet between southern and northern regions. When the negative anomaly over east Siberian Sea and positive anomaly from Northeast China to Japan Sea emerge at 500 hPa geopotential height fields in spring, the contemporaneous spring precipitation in most parts of Hebei, especially Shijiazhuang, is above normal;otherwise, precipitation in spring is below normal. When the negative anomaly over Northwest Europe emerges at 500 hPa geopotential height fields in autumn, the contemporaneous precipitation in most parts of Hebei, especially middle areas, is below normal;otherwise, the precipitation in autumn is above normal. The spring and autumn droughts in Hebei are related to the stronger Baikal blocking high (or high pressure ridge) and the East Asian trough, and the weakened 850 hPa seasonal south winds cause contemporaneous droughts in Hebei.