全球变暖环境下朝阳北部地区气温变化趋势分析  

Trend Analysis of Environment Global Warming Temperature Changes in Northern Chaoyang

作　　者：张国林[1] 宗英飞[1] 

机构地区：[1]辽宁省朝阳市气象局,辽宁朝阳122000

出　　处：《安徽农业科学》2009年第24期11647-11648,11674,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]在气候观测站周边环境相对不变的情况下,研究气候变暖的趋势和程度,为当地农业调整提供气候依据。[方法]应用常规数理统计方法,一元线性拟合渐近线在Escel程序中解析出气温增减幅度。[结果]在没有城市热岛效应影响下,朝阳北部地区年平均最高气温增加1.3℃;年平均最低气温变化趋势平稳;年平均气温增加0.6℃;日极端最高气温≥30℃的日数,在近年增加约50%。[结论]在朝阳北部地区,气候增暖的主体是最高气温,最大贡献在冬季。在最低气温相对不变的情况下,最高气温的提升,加大了日较差,也使热量资源增加。最低气温的不变,就存在霜期的相对稳定,所以在农业作物调整过程中要慎重使用增加的热量资源。[ Objective] The surrounding environment of climate observation stations was relatively unchanged, the trend and degree of climate warming were studied,which provided climate reference for the adjustment of the local agriculture. [ Method ] Linear fit asymptote Escel procedures in the temperature increase or decrease were analyzed by conventional methods of mathematical statistics. [ Result] In the absence of the influence of urban heat island, the northern region, Chaoyang highest annual average temperature increased 1.3℃ ; the trend of annual average minimum temperature was smooth ; annual average temperature increased 0.6 ℃ ; the days of the extreme maximum temperature ≥ 30 ℃ in recent years about increased 50%. [ Conclusion ] In the northern region of Chaoyang,the subject of climate warming was the highest temperature, the greatest contribution was in the winter. The lowest temperatures were relatively unchanged, the raised of maximum temperature, which increased diurnal and also increased heat energy resources. The unchanged of minimum temperature, relative stability of frosty period, so to be careful to use the increased heat resources in the adjustment process of the agricultural crops.

关 键 词：最高气温 最低气温 变化趋势 朝阳北部 

分 类 号：S162[农业科学—农业气象学]