GRAPES全球三维变分同化业务系统性能

近年来,GRAPES全球三维变分同化系统分析性能和稳定性有了长足进步。该文简要介绍了近两年GRAPES全球三维变分同化技术的发展与改进情况,包括同化框架技术、资料同化应用技术与系统稳定性等方面。分析诊断了两年的同化循环试验结果,以探空资料作为参考,对ERA-Interim再分析场、NCEP FNL分析场和GRAPES全球三维变分分析场的统计特征进行了比较;以ERA-Interim再分析场作为参考,对NCEP FNL分析场、T639分析场和GRAPES全球三维变分分析场进行比较。结果表明：GRAPES分析场的质量明显优于T639分析场,性能上达到了业务化的要求,但相比NCEP FNL分析场还有一...

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Bibliographic Details
Published in应用气象学报 Vol. 28; no. 1; pp. 11 - 24
Main Author 王金成 陆慧娟 韩威 刘艳 王瑞春 张华 黄静 刘永柱 郝民 李娟 田伟红
Format Journal Article
LanguageChinese
Published 中国气象局数值预报中心,北京,100081 2017
Subjects
GRAPES
三维变分
全球数值天气预报
资料同化
资料同化
GRAPES
three-dimensional variation data assimilation system
全球数值天气预报
三维变分
data assimilation
global nu-merical weather prediction model
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ISSN1001-7313
DOI10.11898/1001-7313.20170102

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Summary:近年来,GRAPES全球三维变分同化系统分析性能和稳定性有了长足进步。该文简要介绍了近两年GRAPES全球三维变分同化技术的发展与改进情况,包括同化框架技术、资料同化应用技术与系统稳定性等方面。分析诊断了两年的同化循环试验结果,以探空资料作为参考,对ERA-Interim再分析场、NCEP FNL分析场和GRAPES全球三维变分分析场的统计特征进行了比较;以ERA-Interim再分析场作为参考,对NCEP FNL分析场、T639分析场和GRAPES全球三维变分分析场进行比较。结果表明：GRAPES分析场的质量明显优于T639分析场,性能上达到了业务化的要求,但相比NCEP FNL分析场还有一定差距,特别是对流层内湿度分析场的误差还比较大。
Bibliography:11-2690/P
data assimilation; GRAPES; three-dimensional variation data assimilation system; global numerical weather prediction model
Wang Jincheng Huang Lu Huijuan Han Wei Liu Yan Jing Liu Yongzhu Hao Min Li Wang Ruichun Zhang Hua Juan Tian Weihong （Numerical Weather Prediction Center of CMA, Beijing 100081）
In recent years,the capability and stability of GRAPES（Global/Regional Assimilation and PrEdiction System） three-dimensional variation data assimilation system（3DVar） is upgraded and improved gradually in Numerical Weather Prediction Center of China Meteorological Administration.Improvements in analysis scheme and assimilating data technique for GRAPES 3DVar in the past two years are overviewed.Then the capability and performance of G-M3DVar latest version are evaluated by two-year length experiments.The accuracy and precision of G-M3DVar analyses is evaluated against radiosonde observation and ERA-Interim reanalysis and is compared with NCEP FNL and T639 analysis.Taken radiosonde data as a reference,the roo
ISSN:1001-7313
DOI:10.11898/1001-7313.20170102