Multifractal Analysis Of The Climate Change In Anqing

Under the modern world pattern, the international society pays great attention to the research of global weather change in trend. The weather variety relates to the mankind's existence and production, which also has serious impact on the mankind social development process, and any varieties of the weather will directly infect the natural system and the social eco-system. Now, under the central atmosphere of that the global weather is becoming warm, the weather variety will bring serious influence and bane to the social development, and it will also infect and limit the sustainable development strategy in our country.In recent several decades, people have tried various useful methods to study the weather variety in trend, and obtained many succeed results. In this paper, it has used multifractal theoy,joint multifractal theory and R/S analysis to analyses the weather data in Anhui province of Anqing city, and has got some useful conclusion to the weathers forecast, which can be listed as follows.(1) Based on multifractal analysis, we find that the air temperature and atmospheric pressure of Anqing have multifractality. Beside that, the multifractality of day average air temperature is stronger than the multifractality of day average atmospheric pressure, and the fluctuation extent of day average air temperature is stronger than the multifractality of day average atmospheric pressure; it also means that the opportunity of Anqing being in high temperature is more possible than Anqing being in low temperature, and the opportunity of Anqing being in low atmospheric pressure is more possible than Anqing being in high atmospheric pressure, both of them are contrary.(2) Based on joint multifractal analysis, it has got the relationship between air temperature and atmospheric pressure, and this conclusion is consistent with thermodynamics theory. When the air temperature is high, the atmospheric pressure is more possible to be low; when the air temperature is low, the atmospheric pressure is more possible to be high.(3)It has used multifractal and detrended fluctuation analysis method, to analyses the seasonal average temperature of Anqing in recent several decades, and find that the day average air temperature in spring and autumn has short range correlation, and in summer and winter has long range correlation. In other words, the trend of temperature in spring and autumn of future is weakly opposite to the past, the temperature in them will not be possible to rise. The trend of temperature in summer and winter of future will continue to rise. In a word, in the future of several decades, the weather of Anqing in spring and autumn will become cooler, in summer will become hotter and in winter will become warmer.