摘要
Abstract
[Objective] The research aimed to analyze temporal and spatial variation characteristics of temperature in Shangqiu City during 1961 -2010. [ Method] Based on temperature data in eight meteorological stations of Shangqiu during 1961 -2010, by using trend analysis method, the temporal and spatial evolution characteristics of annual average temperature, annual average maximum and minimum temperatures , annual extreme maximum and minimum temperatures, daily range of annual average temperature in Shangqiu City were analyzed. M-K method was used to determine mutation year of temperature. [Result] The annual average temperature, annual average minimum temperature and annual extreme minimum temperature respectively rose at 0.122, 0.255 and 0.488 ℃/10a. The variation trend of annual average maximum temperature wasn' t obvious. The daily range of annual average temperature and annual extreme maximum temperature respectively declined at -0.217 and -0.292 ℃/10a. Seen from spatial distribution, the increase amplitudes of annual average temperature, annual average minimum temperature and annual extreme minimum temperature were all large in the east and small in the west. The decrease amplitude of daily range of annual average temperature was large in the east and small in the west. The decrease amplitude of annual extreme maximum temperature was large in the west and small in the east. The annual average maximum temperature had trends of increase and decrease. The annual average temperature, annual average minimum temperature and daily range of annual average temperature all mutated in 1997. The annual average maximum temperature didn' t have obvious mutation point. The annual extreme maximum temperature mutated in 1973. The annual extreme minimum temperature respectively mutated in 1989 and 1999. [Conclusion] The research played important guidance significances in adjustment of agricultural production structure, regional climate planning, reasonably using climate resource and replying climate change in Shangqiu City.关键词
平均气温/最高、最低气温/极端气温/日较差/气候变化/时空变化特征Key words
Average temperature/ Maximum and minimum temperatures/ Extreme temperature/ Daily range/ Climate change/ Temporal and spatial variation characteristics分类
天文与地球科学
