|
|||||
|
|
| 两种再分析资料与RS92探空资料的比较分析 | |
| 引用本文： | 朱彦良,凌超,陈洪滨,张金强,彭亮,余予.两种再分析资料与RS92探空资料的比较分析[J].气候与环境研究,2012,17(3):381-391. |
| 作者姓名： | 朱彦良 凌超 陈洪滨 张金强 彭亮 余予 |
| 作者单位： | 1. 中国科学院大气物理研究所中层大气和全球环境探测重点实验室,北京100029;中国科学院研究生院,北京100049 2. 中国科学院大气物理研究所中层大气和全球环境探测重点实验室,北京,100029 3. 中国气象局气象信息中心,北京,100081 |
| 基金项目： | 国家自然科学基金重点项目40830102,中国科学院知识创新工程方向项目KZCX2-YW-207,国家自然科学基金面上项目40975001,国家重点基础研究发展计划资助项目2010CB950804 |
| 摘 要： | 利用2008年5～12月在安徽寿县获得的逐6小时RS92探空资料,与同期的NCEP/NCAR和ERA-Interim两种再分析资料(6h)进行比较分析,计算分析了标准气压层上探空与再分析资料的温度、纬向风、经向风和相对湿度的相关系数、偏差和平均绝对差。结果表明:在所有标准层高度,ERA-Interim再分析资料与探空资料的相关优于NCEP再分析资料的与探空资料的相关,温度和风速再分析资料与探空资料的相关优于相对湿度的相关;温度再分析资料与探空资料的相关系数在1000～250hPa接近1,在250hPa以上随高度减小,ERA-Interim与探空资料的偏差的绝对值基本小于0.3℃,而NCEP与探空资料的偏差绝对值在1000hPa上要大一倍;纬向风再分析资料与探空资料的相关系数在对流层中高层大于对流层低层和平流层低层,经向风的相关在对流层随高度增加,在平流层低层迅速减小;风速再分析资料与探空资料的偏差绝对值小于1m·s-1;相对湿度再分析资料与探空资料的相关随高度减小,偏差在400～100hPa层较大,达10%～20%,在更高层小于10%。 |
| 关 键 词： | RS92 再分析资料 相关系数 偏差 平均绝对差 |
| 收稿时间： | 8/9/2010 12:00:00 AM |
| 修稿时间： | 2011/11/25 0:00:00 |
Comparison of Two Reanalysis Data with the RS92 Radiosonde Data |
|
| ZHU Yanliang,LING Chao,CHEN Hongbin,ZHANG Jinqiang,PENG Liang and YU Yu.Comparison of Two Reanalysis Data with the RS92 Radiosonde Data[J].Climatic and Environmental Research,2012,17(3):381-391. | |
| Authors: | ZHU Yanliang LING Chao CHEN Hongbin ZHANG Jinqiang PENG Liang and YU Yu |
| Institution: | Key Laboratory for Middle Atmosphere and Global Environment Observations, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Graduate University of Chinese Academy of Sciences, Beijing 100049;Key Laboratory for Middle Atmosphere and Global Environment Observations, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Graduate University of Chinese Academy of Sciences, Beijing 100049;Key Laboratory for Middle Atmosphere and Global Environment Observations, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Key Laboratory for Middle Atmosphere and Global Environment Observations, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Graduate University of Chinese Academy of Sciences, Beijing 100049;Key Laboratory for Middle Atmosphere and Global Environment Observations, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Graduate University of Chinese Academy of Sciences, Beijing 100049;Center of Meteorological Information, China Meteorological Administration, Beijing 100081 |
| Abstract: | An intercomparison by interpolation is made between two types of reanalysis data(NCEP/NCAR and ERA-Interim) and seven months(May 2008 to December 2008) measurements of high vertical resolution GPS radiosonde(RS92) at Shouxian station(32.56°N,116.78°E),China.The correlation coefficient(R),bias(Bias),and mean absolute deviation(Mad)of temperature(T),zonal wind(U),meridional wind(V),and relative humidity(RH) are presented at the standard pressure levels of two reanalysis data sets from 1000 hPa to 20 hPa.The results indicate better correlation of RS92 observations with the ERA-Interim data than that with the NCEP/NCAR data.T,U,and V have higher correlation coefficients than RH at all levels.R of T is close to 1.0 from 1000 hPa to 250 hPa and decreases gradually above 250 hPa.The absolute values of bias for T is mostly less than 0.3℃ between ERA-Interim and RS92,but about two times between NCEP and RS92 at all levels.R of U is larger in middle and upper troposphere than in lower troposphere and lower stratosphere.R of V increases with height in the troposphere and decreases dramatically in lower stratosphere.R of RH decreases with height.It is shown that Bias of RH ranges from 10% to 20% through 400 hPa to 100 hPa and becomes smaller than 10% in the upper layers,which is in part attributed to the limitation of measurement precision. |
| Keywords: | RS92 reanalysis data correlation coefficient bias mean absolute deviation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《气候与环境研究》浏览原始摘要信息 | |
| 点击此处可从《气候与环境研究》下载免费的PDF全文 | |