首页> 中文期刊> 《安徽农业科学》 >北碚区气温时空分布及变化趋势分析

北碚区气温时空分布及变化趋势分析

         

摘要

[目的]分析北碚区气温时空分布及变化趋势.[方法]利用北碚地区6个地面气象观测站1951~2010年气温观测资料,运用EOF、线性趋势等分析方法对北碚区近60年来气温的时空分布及变化的主要特征进行分析,揭示该地区气候特征.[结果]近60年北碚区气温总体呈上升趋势,平均增温速率为0.045℃/10a,其中秋季增温最为明显,而夏季呈减温趋势;1~7月平均温度呈逐渐升高趋势,8~12月呈逐渐降低趋势;从空间分布来看,全区气候呈现西部地区温度较高、中部较低的分布状况;全区平均温度异常空间分布主要有全区一致偏高(低)型、南北反向型和东西反向型.[结论]该研究为有效防灾减灾提供理论依据.%[Objective] The research aimed to analyze temporal-spatial distribution and change trend of the temperature in Beibei District. [Method] Based on temperature observation data at 6 ground meteorological observatories in Beibei District front 1951 to 2010, EOF and linear trend method were used to analyze temporal-spatial distribution and change characteristics of the temperature in Beibei District in recent 60 years. [Result] Temperature in Beibei District in recent 60 years overall presented rise trend, and average rise velocity was 0.045 ℃/10a. Temperature rise in autumn was the most obvious, while summer temperature presented decline trend. Average temperature presented gradual rise trend from January to July and gradual decrease trend from August to December. Seen from spatial distribution, temperature in the whole district was higher in the west and lower in the middle. Abnormal spatial distribution of the average temperature in the whole district mainly had consistent higher (lower) type, south-north reverse type and east-west reverse type. [Conclusion] The research provided theoretical basis for effective disaster prevention and reduction in the zone.

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