%0 Journal Article
%T Annual and Seasonal Change Characteristics of Temperature in the Fenhe River Basin During the Period 1960-2007<br>1960年至2007年汾河流域气温年际和季节性变化特征分析
%A LIU Yufeng
%A SUN Hu
%A YUAN Zhihua
%A <br>刘宇峰
%A 孙虎
%A 原志华
%J 资源科学
%D 2011
%I 
%X Based on monthly average temperature data during the period 1960-2007 from 19 stations in the Fenhe River basin, linear trend analysis, moving average methods, and Mann-Kendall were employed to analyze changing trends in temperature in the context of global warming. Results show that the annual average temperature, average maximum and average minimum temperatures in the Fenhe River basin generally increased at rates of 0.32°C/10a, 0.13°C/10a, 0.50°C/10a, respectively. The variation range of the annual temperature showed a declining trend over the recent 48 years at a rate of 0.37°C/10a. Abrupt changes of the annual average temperature, average maximum temperature, and average minimum temperature occurred in 1993, 1996, and 1981, respectively. The general warming trend of climate was taken to occur in recent 15 years. For all years considered, changes in the annual average temperature, average maximum and average minimum temperatures varied greatly. But there seemed to be a general trend that since the 1990s the averages of the annual average, maximum, and minimum temperatures were higher than the mean temperatures for the whole time series. The increasing rate of the annual average minimum temperature was significantly greater than the annual average maximum temperature, which could be attributed to the major reason leading to climate warming across the Fenhe River basin. The annual average temperatures in spring, summer, autumn, and winter showed increasing trends at rates of 0.36°C /10a, 0.08°C /10a, 0.25°C /10a, and 0.59°C/10a, respectively. The annual average maximum and minimum temperatures showed seasonal variations. The increasing trend of the annual average maximum temperature in winter was most obvious, showing a rate of 0.75°C/10a, followed by that in autumn at a rate of 0.30°C/10a. The increasing rate of annual average maximum temperature in summer was smallest. Also, the increasing trends of annual average minimum temperature in spring, autumn, and winter were very remarkable, with the maximum rate of 0.51°C/10a and the minimum rate of 0.06°C /10a occurring in winter and summer, respectively. In general, the rate of winter temperature was found to be greater than that in other seasons, which suggests that it is the greatest contribution to climate warming in the Fenhe River basin. The regional differences of annual average temperature in the upper, middle, and lower reaches of the Fenhe River basin were not obvious, but for the seasonal variation, there were obvious regional differences in changes of temperatures in spring and winter.
%K Temperature
%K Change characteristic
%K Analysis
%K Fenhe River basin<br>气温
%K 变化特征
%K 分析
%K 汾河流域
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=9DEEAF23637E6E9539AD99BE6ABAB2B3&aid=1D85028D8E45B3BC10DE3621B1FA64F0&yid=9377ED8094509821&vid=27746BCEEE58E9DC&iid=38B194292C032A66&sid=F176272DD933A0BB&eid=C4490A71BEB872FA&journal_id=1007-7588&journal_name=资源科学&referenced_num=2&reference_num=17