青藏高原多源气象辐射数据整合与评估  

Integration and Evaluation of Multi-source Meteorological Radiation Data over Qinghai-Xizang Plateau

作　　者：刘娜[1] 熊安元[1] 张强[1] 冯爱霞[1] LIU Na;XIONG Anyuan;ZHANG Qiang;FENG Aixia(National Meteorological Information Center,Beijing 100081)

机构地区：[1]国家气象信息中心,北京100071

出　　处：《高原气象》2023年第1期35-48,共14页Plateau Meteorology

基　　金：国家自然科学基金项目(91637313)。

摘　　要：基于中国气象局气象业务观测站、青藏高原大气科学试验站及中国科学院野外试验站多源辐射观测数据,经过质量控制和拼接整合,形成1993年以来青藏高原多源气象辐射基本要素逐小时曝辐量整合数据集(Integrated of Multi-source Radiation Data over Qinghai-Tibet Plateau,IRDQTP)。各辐射要素实有率均超过99.4%,光合有效辐射正确率低于76%,其他辐射要素正确率超过96.7%。相同或相近观测站址的大气科学或野外试验站(试验站)与气象业务观测站(业务站)向下短波辐射R>0.88,阿里相同站址两种来源数据对比Mbias(RMSE)为-0.006(0.141)MJ·m^(-2)·h^(-1),99.8%的偏差分布在±1.0 MJ·m^(-2)·h^(-1),那曲相近站址两种来源数据对比Mbias(RMSE)为-0.028(0.615)MJ·m^(-2)·h^(-1),84.6%的偏差分布在±1.0 MJ·m^(-2)·h^(-1)。试验站和业务站数据差异呈现明显的季节变化和日变化规律,秋冬季节较小,夏季较大,日出时段(日落时段)随着向下短波辐射强度快速升高(快速降低),差异逐渐变大,当向下短波辐射变化率达到最大时,差异也达到最大。向下短波辐射和净全辐射分布具有明显的日变化特征,春秋季节向下短波辐射、净全辐射均在12:00(地方时,下同)达到最大,夏季和冬季在13:00达到最大。受气候条件和地形因素影响,向下短波辐射和净全辐射分布具有明显的空间变化特征,向下短波辐射自西向东呈现逐渐减少的分布形态,净全辐射自西向东呈现“低-高-低”的分布形态。Based on multi-source of radiation observations from CMA operational,Qinghai-Xizang Plateau At‐mospheric Scientific Experiment and Chinese Academy of Sciences field stations,the integrated of multisource radiation data over Qinghai-Xizang Plateau(IRDQTP)since 1993 has been constructed through quality control,splicing and integration.The percent of each radiation element actual records is more than 99.4%.The accuracy rate of photosynthetic effective radiation is less than 76%,and other elements are more than 96.7%.The correlation coefficient of downward shortwave radiation between atmospheric scientific experiment and meteorological operational observations at the same or similar sites exceeds 0.88.The Mbias (RMSE) of Ali(the same station site) between operational and experimental observations is-0.006 (0.141) MJ·m^(-2)·h^(-1),with 99.8%distributes between-1.0 and 1.0 MJ·m^(-2)·h^(-1),and Naqu (similar station site) is-0.028 (0.615) MJ·m^(-2)·h^(-1),with 84.6%distributes between-1.0 and 1.0 MJ·m^(-2)·h^(-1).The difference between the operational and experimental observations shows obvious seasonal and diurnal variations.It is little in autumn and winter while large in spring and summer.Affected by the difference of radiometer sensitivity and environmental re‐sponse parameters,the difference gradually increases with the rapid increase (rapid decrease) of short-wave radi‐ance in the sunrise period (sunset period) while decreases gradually with the increase of short-wave radiance dur‐ing other times.It reaches the maximum when the change rate of short-wave radiation reaches the maximum.There are daily variations in downward shortwave radiation and net radiation with a single peak distribution.The downward shortwave radiation reaches the maximum at 12:00 (local average solar time,similarly hereinafter) in spring and autumn which is 2.71 and 2.21 MJ·m^(-2)·h^(-1)respectively while at 13:00 in summer and winter which is2.58 and 1.89 MJ·m^(-2)·h^(-1)respectively.The net radiation reaches the maximum a

关 键 词：青藏高原 多来源 气象辐射数据 整合集成 评估分析 

分 类 号：P413[天文地球—大气科学及气象学]