摘要
为分析桂林市干旱发生的气候特征,用全市13个站1957~2010年的降水资料,统计旬合计降水量,划分气象干旱等级,对干旱发生的地域分布、发生概率及时间序列变化周期等进行研究。结果是:受天气系统和特殊地形的影响,市区东南部干旱最严重,北部最轻;桂林以秋冬季节干旱为主,春夏季节干旱很少发生;严重干旱具有11年的周期变化特征。
For analysis of the climate characteristics of drought occurred in Guilin, we used the precipitation data of 13 stations of Guilin from 1957-2010 years, made ten-day rainfall statistics, divided the meteorological drought levels, studied on the geographical distribution, and occurrence probability, and time series change cycle of drought. The result shows that: By the influence of weather system and special terrain, the drought is most serious in the southeast and lightest in the north;the drought is mainly occurred in autumn and winter, but rarely happened in the spring and sum-mer;severe drought have 11-year periodic change feature.
出处
《气候变化研究快报》
2013年第1期20-24,共5页
Climate Change Research Letters
基金
广西气象局重点项目“广西市县级农业气象业务服务平台”(201101)。
