Analysis On Climate Change Of The Qinghai-tibet Plateau In The Recent50Years

This paper analyzes of the average annual temperature, annual precipitation,extreme temperatures, extreme precipitation, the spatial and temporal characteristicsof the climate change of the Qinghai-Tibet Plateau in the recent50years andQinghai-Tibet Plateau climate region of main content. First, the lack of measured dataof the plateau site interpolation.The Qinghai-Tibet Plateau temperature is rising trend,average annual temperatures, extreme heat and extreme cold have shown anincreasing trend, and extreme heat and extreme cold in1991showing mutations fromlow to high temperatures and extreme heat mutation point in time by a significanttest.Each site of the annual precipitation is not consistent performance all same, butthe overall increase in average annual precipitation trends in the number of sites is farmore than decrease the number of sites to reduce the trend of sites occur in thevicinity of the Tibetan Plateau, the central plateau site performa nce increase in annualprecipitation trend.Extreme precipitation a rising trend is mostly. different regions onbehalf of the site of extreme climate period of time is not the same, and cycleinconsistency.Plateau summer rainfall spatial and temporal characteristics for theregion consistency and North-South differences, with findings of age differences involatility.Tibetan Plateau climate divisions of climatic factors, mainly temperatureand precipitation, the use of optimized statistical cluster a nalysis (CAST) method,the Qinghai-Tibet Plateau is divided into three small climate zones of the Arid Regionof Northwest, Southeast humid region and the central plateau area.