| 三套再分析降水资料在东北地区的适用性评价 |
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| 引用本文： | 刘鹏飞,刘丹丹,梁丰,王婉昭,于跃,郭佰汇,于芳健,毕明林.三套再分析降水资料在东北地区的适用性评价[J].水土保持研究,2018,25(4):215-221. |
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| 作者姓名： | 刘鹏飞 刘丹丹 梁丰 王婉昭 于跃 郭佰汇 于芳健 毕明林 |
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| 作者单位： | 1. 辽宁省朝阳市气象局, 辽宁 朝阳 122000;2. 辽宁省气象科学研究所, 沈阳 110166 |
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| 摘 要： | 利用1980—2010年东北地区84个气象站月降水资料，基于相关分析、偏差比较、气候倾向率等方法，从不同时间尺度（年、季、月）对CFSR，MERRA和NCEP再分析降水资料在东北地区的适用性进行了比较，结果表明:三套再分析资料能够反映出东北地区年均降水东南多、西北少的分布特征，其中CFSR和MERRA对东北地区年均降水分布的刻画能力要好于NCEP。在年尺度上，CFSR和MERRA与观测资料的变化幅度更接近，其中，MERRA年均降水量与观测资料的差值最小，为42.4 mm。三套再分析资料与观测资料在不同季节的相关性表现出一定的差异。首先，CFSR与观测资料在春、夏、秋3季的相关性要好于冬季；而MERRA与观测资料的相关性则是春、秋两季最优，冬、夏两季次之；NCEP在冬季与观测资料的相关性最好。其次，CFSR和MERRA在春、夏、秋3季与观测资料的相关性要好于NCEP；而在冬季，MERRA和NCEP与观测资料的相关性优于CFSR。在月尺度上，MERRA资料与观测降水的相关性优于CFSR和NCEP，MERRA与观测降水的平均绝对偏差在三套再分析资料中最小，为17.5 mm，CFSR和NCEP的这一差值分别为20.7 mm和22.6 mm。
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| 关 键 词： | 再分析资料 CFSR MERRA NCEP 东北地区 降水 |
Comparison the Adaptability of CFSR,MERRA, NCEP Reanalysis Precipitation Data and Observation in Northeast China |
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| LIU Pengfei,LIU Dandan,LIANG Feng,WANG Wanzhao,YU Yue,GUO Baihui,YU Fangjian,BI Minglin.Comparison the Adaptability of CFSR,MERRA, NCEP Reanalysis Precipitation Data and Observation in Northeast China[J].Research of Soil and Water Conservation,2018,25(4):215-221. |
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| Authors: | LIU Pengfei LIU Dandan LIANG Feng WANG Wanzhao YU Yue GUO Baihui YU Fangjian BI Minglin |
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| Institution: | 1. Chaoyang Meteorological Administration, Chaoyang, Liaoning 122000, China;2. Institute of Meteorological Sciences of Liaoning Province, Shenyang 110166, China |
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| Abstract: | Based on monthly precipitation data of 84 weather stations in northeast China from 1980 to 2010, we compared the differences of precipitation between reanalysis data and observation by using correlation analysis, deviation comparison and climate tendency. The results show that the three analysis data-sets (CFSR, MERRA and NCEP) can reflect the distribution of precipitation in northeast China. But CFSR and MERRA are better than NCEP in describing the details of precipitation. At the annual scale, the variation ranges of CFSR and MERRA are closer to observation data than NCEP, while the difference between MERRA annual precipitation and observation is smallest, which is 42.4 mm. It is found that there are some differences in significant correlation between three reanalysis data-sets and observed data. Firstly, the correlation of CFSR and observed data in spring, summer and autumn is better than winter. However, the correlation of MERRA and observed data is better in spring and autumn. Secondly, the correlation between CFSR, MERRA and observed data is better than NCEP in spring, summer and autumn. But in winter, MEERA and NCEP are better than CFSR. At the monthly scale, the mean absolute deviation of MERRA and observed data is the smallest among three data-sets, which is 17.5 mm. And the mean absolute deviations between CFSR, NCEP and observed data are 20.7 mm and 22.6 mm. |
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| Keywords: | reanalysis data CFSR MERRA NCEP northeast China precipitation |
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