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In this paper, based on the global surface air temperature field from 1969 to 1978, westudy on the formation of frequent, appearance of climatic anomalies. During 1970’s themeridional temperature gradient in the middle and high latitudes grows larger than normal,thus intensifying the atmospheric baroclinicity. It results in enhancing the atmospheric varia-bility and exciting more disturbances, Moreover, the climatic variation in various latitudesdoes not appear at, the same time. It seems that there are some key areas where their climat-ic situation may affect the climate in other areas, The climatic variation usually first ap-pears in the equatorial ocean area or in the continental region at the polar and higher lati-tudes zone. Then it will spread out to the middle latitudes and generate a short-range cli-matic fluctuation.
In this paper, based on the global surface air temperature field from 1969 to 1978, westudy on the formation of frequent, appearance of climatic anomalies. During 1970’s themeridional temperature gradient in the middle and high latitudes grows larger than normal, thus intensifying the atmospheric baroclinicity . It results in enhancing the atmospheric varia-bility and exciting more disturbances, Moreover, the climatic variation in various latitudesdoes not appear at, the same time. It seems that there are some key areas where their climat-ic situation may affect the climate in. other areas, The climatic variation usually first ap-pears in the equatorial ocean area or in the continental region at the polar and higher lati-tudes zone. Then it will spread out to the middle latitudes and generate a short-range cli-matic fluctuation .