Analyses on Extreme Temperature and Precipitation Characteristics in Liaoning in Recent Half Century

Based on the extreme temperature and precipitation data at 53 stations of Liaoning Province,their temporal-spatial characteristics are analyzed.The main results are as follows: Extreme maximum and minimum temperatures for years in succession are of regional features.The highest extreme maximum temperature happened in the west area of Liaoning and the lowest, in the east area.Extreme daily rainfall for years in succession is of strongly local character.The extreme maximum temperature often happen in June to August,and but the most of regions that the value of Liaoning happen in June.The extreme value of minimum temperature happen in January,so as extreme precipitation,in July or August.Extreme maximum temperature and extreme daily rainfall have weak trends in Liaoning,but extreme minimum temperature has obviously warming trend which is more than that of mean temperature.There are five(four) main spatial distribution patterns for extreme maximum(minimum) temperature anomalies,and all patterns have some temporal changing characteristics.Extreme maximum,minimum temperatures and daily precipitation are of some different long and short cycles,but about 9,18 and 11 years is their the best obvious oscillation,respectively.In the recent 46 years,extreme temperature and precipitation are of warming or decreasing jump change.