Summer Precipitation Characteristics in the Eastern of Inner Mongolia
Liu Xin;Liu Linchun;You Li;Gao Zhiguo;Li Guoqing;Climatic Center of Inner Mongolia;Inner Mongolia Meteorological Observatory;Hangjin Meteorological Bureau;
By using daily precipition data from 48 observation stations in eastern of Inner Mongolia during the period of 1961 to 2016, the characteristics of summer precipitation is analyzed. The results show that over the past 57 years, the average summer precipitation trend in eastern Inner Mongolia was not significant but had been less than normal since 1998 obviously. 88 percent of the site's summer precipitation was reduced, with only the decreasing tendency of Gaoliban in Xing ‘an league and Wengniute in Chifeng were significantly.The spatial distribution of summer precipitation in the eastern of Inner Mongolia was uneven, especially in hulunbuir was decaying from east to west.The end date in east had a significant advance trend. And the rainy season precipitation was decreased significantly after 1998. The historical extremes of precipitation and extreme precipitation threshold were minimum in the west of Hulunbuir and maximum in the south of Tongliao and the southeast of Chifeng. The superthreshold extreme precipitation days of most sites were less, only in the south of Tongliao and the southeast of Chifeng were more. The change trend of superthreshold extreme precipitation total days was not significant but obviously increased before 1998 and then significantly reduced.
【CateGory Index】： P426.6