| 甘肃省近46a年降水结构空间变化分析 |
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| 引用本文： | 韩晖,孟丽霞.甘肃省近46a年降水结构空间变化分析[J].甘肃气象,2010,28(1):30-34. |
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| 作者姓名： | 韩晖 孟丽霞 |
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| 作者单位： | 中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室中国气象局干旱气候变化与减灾重点开放实验室;兰州中心气象台; |
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| 基金项目： | 兰州干旱气象研究所启动课题资助 |
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| 摘 要： | 通过对甘肃省1960～2005年62个气象站逐日降水量的分析,得出反映年内降水结构的2类指标:不同强度降水日数构成和降水相关极值的空间变化特征。结果表明,全省范围内降水各指标均没有同质的变化,说明降水变化的空间差别很大,从区域平均值角度难以得到有用信息;而降水结构分析从微观解构宏观状况,可以更好地说明降水的变化特征。对降水结构的空间变化进一步分析说明,一个区域的降水是否有显著的变化趋势,是各降水相关指标变化的综合作用结果,这种组合非常复杂,通常不具备广泛的代表性,各个指标非显著性变化的组合结果可以是降水量要素的显著变化。
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| 关 键 词： | 甘肃省 年降水结构 空间变化 |
Study on the Spatial Variation of Annual Precipitation Structure over Gansu Province During Recent 46 Years |
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| HAN Hui,MENG Lixia.Study on the Spatial Variation of Annual Precipitation Structure over Gansu Province During Recent 46 Years[J].Gansu Meteorology,2010,28(1):30-34. |
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| Authors: | HAN Hui MENG Lixia |
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| Institution: | 1.Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province;Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA;Institute of Arid Meteorology;Chinese Meteorological Administration;Lanzhou 730020;China;2.Lanzhou Central Meteorological Observatory;China |
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| Abstract: | Based on the analysis of daily precipitation of 62 weather stations in Gansu Province from 1960 to 2005,it educed the characteristics of spatial variation of different intensity precipitation days and precipitation relative extremes,and those can reflect the structure of precipitaiton.The results show that there isn't any homogeneous variation over the whole province for each indicator,and the spatial distinction of precipitation variation is great.Thus,the regional average of precipitation is meaningless a... |
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| Keywords: | Gansu Province annual precipitation structure spatial variation |
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