| 基于Anusplin插值的广东省近50年日照时数时空特征 |
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| 引用本文： | 严敏聪,潘志豪,沈碧辉,翁佳烽.基于Anusplin插值的广东省近50年日照时数时空特征[J].广东气象,2022,44(1):25-29. |
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| 作者姓名： | 严敏聪 潘志豪 沈碧辉 翁佳烽 |
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| 作者单位： | 四会市气象局,广东四会526200,肇庆市气象局,广东肇庆 526060 |
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| 基金项目： | 肇庆市科技计划项目;肇庆市气象局科研项目;国家重点研发计划 |
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| 摘 要： | 基于1971-2020年广东省国家气象站点数据,采用Anusplin插值以及Morlet小波来分析广东省日照时数空间栅格数据以及时间序列周期变化规律.结果表明:(1)广东省年均日照时数的变化范围为1 052.3～2 185.9 h,平均日照时数为1 713.8 h,呈现南多北少、东西多中间少的分布规律.四季平均日照时数...
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| 关 键 词： | 气候学 日照时数 Anusplin插值 小波分析 广东省 |
Spatiotemporal Characteristics of 50-year Sunshine Duration for the Province of Guangdong Based on the Anusplin Interpolation |
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| YAN Min-cong,PAN Zhi-hao,SHEN Bi-hui,WENG Jia-feng.Spatiotemporal Characteristics of 50-year Sunshine Duration for the Province of Guangdong Based on the Anusplin Interpolation[J].Journal of Guangdong Meteorology,2022,44(1):25-29. |
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| Authors: | YAN Min-cong PAN Zhi-hao SHEN Bi-hui WENG Jia-feng |
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| Institution: | (Meteorological Bureau of Sihui,Sihui 526200;Meteorological Bureau of Zhaoqing,Zhaoqing 526060) |
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| Abstract: | Based on the data from the national meteorological observation stations in Guangdong from 1971 to 2020 and with the methods of Anusplin interpolation and Morlet wavelet analysis,this work studies the spatial lattices of the provincial sunshine duration and the periodical variation patterns of its temporal series.The result is shown as follows.(1)The annual mean sunshine duration of Guangdong varies within the range from 1052.3 to 2185.9 h with an average of 1713.8 h,distributing more in the southern,eastern and western parts than in the northern and central parts of the province.Seasonal average sunshine duration tops in summer(564.45 h),followed in turn by autumn(536.12 h),winter(357.61 h)and spring(300.13 h).(2)Reflecting actual spatial distribution of the sunshine duration more accurately,the Anusplin interpolation is the method that has better verification result as compared to either the Kriging or the IDW method.(3)With regard to temporal variation,the sunshine duration shows a general decreasing trend across the province,significantly in the central part and most significantly in high-altitude localities.The variation of sunshine duration is periodical mainly at 5 to 15,18 to 24,28 to 34,38 to 44,and 52 to 58 years,with periods on the medium-to-small scales(20 years or less)decreasing,and those on the large scale(30 years or more)increasing,in the few years to come. |
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| Keywords: | climatology sunshine duration Anusplin interpolation wavelet analysis Guangdong province |
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