云南探空仪换型温度和位势高度观测数据对比分析  

Comparative Analysis of Temperature and Geopotential Height Observation Data of Radiosonde Type Change in Yunnan

作　　者：杨国彬 舒康宁 李成鹏 周可 番聪聪 蒋锐 YANG Guobin;SHU Kangning;LI Chengpeng;ZHOU Ke;FAN Congcong;JIANG Rui(Yunnan Meteorological Information Center,Kunming 650034;Yunnan Weather Modification Center,Kunming 650034)

机构地区：[1]云南省气象信息中心,昆明650034 [2]云南省人工影响天气中心,昆明650034

出　　处：《气象科技》2022年第5期636-645,共10页Meteorological Science and Technology

基　　金：云南省气象局科研项目(YZ202112)资助。

摘　　要：基于云南探空仪换型平行观测期间各标准等压面上的温度和位势高度观测数据以及对应的ECMWF模式预报场数据,利用偏差、标准差、均方根误差和相关系数等对新、旧探空仪观测数据进行对比分析和评估。结果表明:新、旧探空仪观测数据一致性较好,在100 hPa以下两者温度绝对偏差小于1.0℃,位势高度绝对偏差小于30 gpm,100 hPa以上温度和位势高度最大绝对偏差分别为3.9℃和151.0 gpm。除高层个别等压面外,新、旧探空仪观测数据离散性基本一致或新探空仪离散性相对较小。新探空仪观测数据与模式数据更为一致,在中高层表现更为明显;相对于模式数据,新、旧探空仪温度偏差分别集中在±0.7℃、±0.9℃左右,最大均方根误差分别为3.0℃、4.5℃,平均相关系数分别约为0.78、0.73;新、旧探空仪位势高度最大偏差分别为28.5 gpm、130.9 gpm,最大均方根误差分别为87.6 gpm、136.9 gpm,平均相关系数分别约为0.86、0.78。Based on the observation data of temperature and geopotential heights at each mandatory level and the forecast field data of ECMWF during radiosonde type change parallel observation in Yunnan,the observation data of new and old radiosondes are comparatively analyzed and evaluated by using BIAS,standard deviations,Root Mean Square Error(RMSE) and related coefficients.The results show that the observation data of the new and old radiosonde are in good agreement.Below 100 hPa,the temperature absolute observation BIASs of new and old radiosondes are less than 1.0 ℃,and geopotential heights are less than 30 gpm.Above 100 hPa,the maximum absolute BIASs of temperature of new and old radiosondes are 3.9 ℃,and geopotential heights are 151.0 gpm.Except for individual levels in the lower and higher levels,the dispersions of observation data of new and old radiosondes are basically the same,or the dispersion of new radiosonde is relatively small.The new radiosonde observation data is more consistent with the model data and is more obvious at the middle and high levels.Compared with the model data,the BIASs of temperature of the new and old radiosondes are concentrated at about ±0.7 ℃ and ±0.9 ℃,the maximum RMSEs of them are about 3.0 ℃ and 4.5 ℃,and the average related coefficients are about 0.78 and 0.73,respectively.The maximum BIASs of geopotential heights of new and old radiosondes are 28.5 gpm and 130.9 gpm,the maximum RMSEs of them are about 87.6 gpm and 136.9 gpm,and the average related coefficients are about 0.86 and 0.78,respectively.

关 键 词：探空仪换型 温度 位势高度 对比分析 评估 

分 类 号：P412.23[天文地球—大气科学及气象学]