Significantly improved representation of the stratospheric quasi-biennial oscillation in the CMA-RA V1.5 reanalysis datasetOA
Significantly improved representation of the stratospheric quasi-biennial oscillation in the CMA-RA V1.5 reanalysis dataset
迄今为止,中国气象局先后发布了两套全球大气再分析数据,分别被称为CRA-40和CMA-RA V1.5.以往研究表明,CRA-40对平流层准两年振荡(QBO)现象的刻画与国际上广泛使用的ERA5再分析数据相比还存在较大的偏差.本研究评估了CMA-RA V1.5再分析数据对QBO的表征能力.结果表明,该套数据对QBO的刻画技巧已有了显著提升,并且已与ERA5相当.具体而言,在QBO指数,周期和振幅的表征方面,CMA-RA V1.5与ERA5之间的误差分别为CRA-40与ERA5之间误差的2％,7％和12％.CMA-RA V1.5中更为先进的资料同化技术可能是其数据质量得到提升的重要原因.
Jinggao Hu;Zixu Wang;Jing-Jia Luo;Xinrui Li;Rongjun Wang
State Key Laboratory of Environment Characteristics and Effects for Near-space(ECEN)/Key Laboratory of Meteorological Disaster,Ministry of Education(KLME)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD),Nanjing University of Information Science and Technology,Nanjing,ChinaKey Laboratory of Mesoscale Severe Weather,Ministry of Education,and School of Atmospheric Sciences,Nanjing University,Nanjing,ChinaState Key Laboratory of Climate System Prediction and Risk Management(CPRM)/Institute for Climate and Application Research(ICAR),Nanjing University of Information Science and Technology,Nanjing,ChinaState Key Laboratory of Environment Characteristics and Effects for Near-space(ECEN)/Key Laboratory of Meteorological Disaster,Ministry of Education(KLME)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD),Nanjing University of Information Science and Technology,Nanjing,ChinaState Key Laboratory of Environment Characteristics and Effects for Near-space(ECEN)/Key Laboratory of Meteorological Disaster,Ministry of Education(KLME)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD),Nanjing University of Information Science and Technology,Nanjing,China
CMA-RA V1.5CRA-40ERA5平流层准两年振荡再分析数据比较
CMA-RA V1.5CRA-40ERA5Stratospheric quasi-biennial oscillationReanalysis intercomparison
《大气和海洋科学快报（英文版）》 2026 (4)
34-39,6
This work was supported by the National Natural Science Foundation of China[grant numbers 42088101 and 42361144843].
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