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投稿时间：2005-01-26 修订日期：2005-11-07
投稿时间：2005-01-26 修订日期：2005-11-07
中文摘要: 我国探空观测业务已逐步用L波段探空仪取代59型探空仪。为了解L波段探空仪观测质量,利用观测资料减模式背景场的差(简称OMB)的统计分析技术和贝塞尔函数拟合法分离观测误差技术,分析了2005年3—5月我国36个L波段探空仪探测的温度误差特性。结果表明,L波段和59型的OMB平均偏差差别不大,一般都在0.2℃之内。而温度随机误差在500～300hPa减小约0.2℃,在00时300hPa以上,有更明显的减小,达0.4℃,约占59型观测误差的四分之一。
中文关键词: 误差分析，贝塞尔函数拟合，系统性偏差，随机误差
Abstract:Up to June 2005,L band digital radiosondes are used in 36 upper-air observation stations in China.In order to understand the observation error characters,the error analysis is made about the observed temperature data of L band digital radiosonde from March to May of 2005.The mean and root mean square biases of observation minus background field of T213 model,which is called OMB,are calculated.Bessel fitting technique is used to separating out observation error from OMB.The results show that comparing with Model-59 radiosonde observation data,there is no obvious difference(usually in 0.2℃)in the mean of OMB.But a great reduction is made in random errors of temperature of L band digital radiosonde:at 12Z and at 00Z 500～300hPa about 0.2℃;at 00Z above 300hPa,about 0.4℃,accounting for the 25% of the random errors of temperature for Model-59 radiosonde.
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引用文本：
陶士伟,陈晓红,龚建东,2006.L波段探空仪温度资料误差分析[J].气象,32(10):46-51.
,2006.Error Analyses for Temperature of L Band Radiosonde[J].Meteor Mon,32(10):46-51.
陶士伟,陈晓红,龚建东,2006.L波段探空仪温度资料误差分析[J].气象,32(10):46-51.
,2006.Error Analyses for Temperature of L Band Radiosonde[J].Meteor Mon,32(10):46-51.