Relationships between Surface Sensible Heat over the Tibetan Plateau and Spring Precipitation on the Loess Plateau

Based on spring temperature and precipitation data derived from 56 stations in Loess Plateau during 1961~2000, using Singular Value Decompositions (SVD) technique, the relationships between sensible heat field over Tibetan Plateau and spring precipitation on Loess Plateau were analyzed. Results show that the first two patterns from SVD indicate the key coupled characteristic of sensible heat and spring precipitation fields with closely temporal and spatial correlation, the abnormity of sensible heat field in previous autumn and winter would influence general circulation and lead to anomalies of spring precipitation, and the sensible heat has more notable effect on west and south , the part of north region of Loess Plateau than that on north of Shaanxi and middle of shanxi province . The first two patterns variation of the previous sensible heat field over Tibetan Plateau derived from SVD could be the predictor signal for the spring precipitation anomaly in Loess Plateau.