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《Plateau Meteorology》 1984-04
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CLIMATIC VARIATIONS OVER QI-LIAN MOUNTAIN AREA

Tang Maocang Xu Manchun ( Lanzhou Institute of Plateau Atmospheric Physics, Academia Sinica )  
According to the data of last 500 years collected by liu etc.[1] and zhang[3],we have pointed out that tie phase of the climatic vibration scaled near 100 years over the Qilian mountain is about 15 years earlier than that over the eastern part of China.The interannual precipitations are always in opposite the tendencies between the western part and eastarn part of this mountain area. In the 1960s, the mountain area as a whole was cooler than in 1950s, but in the middle basin of all the eastward rivers, the case was just inverse, being warmer in that ten years.In the 1970s, the Plateau summer monsoon was stronger than in 1960s.The variability of temperature and precipitation of the inner part of mountain area is much less than the outer part around the mountain .This phenomena can be explained by the interannual variation of the Plateau monsoon's vertical cireulation system.
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