浙江丽水高温的多时间尺度气候变化特征及趋势演变  

High Temperature Temporal Distribution Characteristics and Its Trend Evolution in Lishui of Zhejiang Province

作　　者：姜燕敏[1,2] 李靖 卢钊[4] 吴昊旻 

机构地区：[1]南京大学大气科学学院,江苏南京210093 [2]浙江省丽水市气象局,浙江丽水323000 [3]湖北省黄冈市气象局,湖北黄冈438000 [4]浙江省遂昌县气象局,浙江遂昌323300

出　　处：《干旱气象》2015年第3期421-426,443,共7页Journal of Arid Meteorology

基　　金：丽水市高层次人才培养项目(2014RC24);浙江省青年科技项目(2013QN13);丽水市气象局科研集资项目(2014-09)共同资助

摘　　要：利用1953～2013年丽水市逐日最高气温资料，通过多尺度趋势分析方法研究丽水高温的初、终日期，以及高温在年、月尺度上的变化趋势，并采用Morlet小波分析和多窗口谱分析对丽水高温的周期特征进行研究和检验。结果表明：丽水高温初日提前，终日延后，高温持续时间显著拉长；高温日数增多，强度加大，两者呈显著正相关关系，且以2１世纪初的高温最为显著；高温主要分布在3—10月，集中于6～9月，且7月高温日数和强度都达到顶峰，8月次之。高温在年际和年代际尺度上都有周期分量，且不同的周期尺度高温的强度有所差异。高温在年代际尺度上以12a的周期最为显著，在年际尺度上2～6a周期相对明显。Based on the meteorological observation data such as daily high temperature from 1953 to 2013 in Lishui, the multi - scale analysis, Morlet wavelet analysis and multi - taper spectral analysis method were used to analyze the climatic trends of high temperature in Lishui of Zhejiang Province. The results show that the high temperature starting date advanced and ending dates delayed, so the high temperature lasting period was obviously prolonged. High temperature days were proportional to extreme maximum temperature, the lon- ger the high temperature days lasted, the higher the temperature was, which was most obvious in the early 2lst century. High temperature mainly distributed from March to October, and focused in June to September, especially in July. The results of morlet wavelet analysis showed that high temperature had prominent cycles both on interannual and interdeeadal scales, and the high temperature intensity varied on different cycle time scale. The 12 -year cycle was the most significant on interdecadal timescales, and the 2 -6 years cycle was obvious on interannual timeseales.

关 键 词：高温日数 极端最高气温 周期 丽水市 

分 类 号：P468.021[天文地球—大气科学及气象学]