doi:  10.3878/j.issn.1006-9895.1803.17184
基于WACCM DART的临近空间SABER和MLS臭氧观测同化试验研究

Assimilating near space ozone data from SABER and MLS in Whole Atmosphere Community Climate Model and Data Assimilation Research Test-Bed
摘要点击 881  全文点击 86  投稿时间:2017-06-29  修订日期:2018-03-21
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基金:  国家自然科学基金(41375105)
中文关键词:  WACCM  DART  SABER  MLS  臭氧  资料同化
英文关键词:  WACCM  DART  SABER  MLS  ozone  data assimilation
              
作者中文名作者英文名单位
敬文琪Jing Wenqi国防科技大学气象海洋学院
王业桂Wang Yegui中国科学院大气物理研究所
崔园园Cui Yuanyuan南京信息工程大学大气科学学院
蔡其发Cai Qifa中国科学院大气物理研究所
兰伟仁Lan Weiren中国科学院大气物理研究所
引用:敬文琪,王业桂,崔园园,蔡其发,兰伟仁.2018.基于WACCM DART的临近空间SABER和MLS臭氧观测同化试验研究[J].大气科学
Citation:Jing Wenqi,Wang Yegui,Cui Yuanyuan,Cai Qifa,Lan Weiren.2018.Assimilating near space ozone data from SABER and MLS in Whole Atmosphere Community Climate Model and Data Assimilation Research Test-Bed[J].Chinese Journal of Atmospheric Sciences (in Chinese)
中文摘要:
      本研究在WACCM+DART临近空间资料同化预报系统中加入SABER和MLS臭氧观测同化接口,并以2016年2月一次平流层爆发性增温过程为模拟个例进行了SABER和MLS臭氧观测同化试验,得出以下结论:同化SABER和MLS臭氧观测得出的WACCM+DART臭氧分析场能够较真实反映SSW期间北极上空平流层臭氧廓线随时间的演变特征,且与ERA5再分析资料描述的臭氧变化特征具有很好的一致性;基于SABER和MLS臭氧观测的WACCM臭氧6h预报检验表明同化臭氧观测对臭氧分析和预报误差的改善效果主要体现在南半球高纬平流层和北半球中高纬平流层中上层-中间层底部;基于ERA5再分析资料的WACCM+DART分析场检验表明同化SABER和MLS臭氧资料可在提高北半球高纬地区上平流层-中间层底部臭氧场分析质量的同时减小该地区上平流层-中间层底部温度场和中间层底部纬向风场的分析误差;基于MLS臭氧资料的臭氧中期预报检验表明相对控制试验同化SABER和MLS臭氧资料能更好改善0-5d下平流层和中间层底部臭氧的预报效果。
Abstract:
      This research adds interface programs for assimilation SABER and MLS ozone data in the near space data assimilation and forecasting system-WACCM+DART, and performs SABER and MLS ozone data assimilating experiments to simulate a stratosphere sudden warming(SSW) event during February 2016. We get following main conclusions. Firstly, the ozone analysis produced by SABER and MLS ozone data assimilation can well represent the sudden variation of stratospheric ozone profile above north polar area during SSW, which shows good agreement in describing ozone changing characteristics with ERA5 reanalysis. The 6 hour ozone forecast verification based on SABER observation and MLS observation shows that the improvement of 6 hour ozone forecast and analysis through assimilating SABER and MLS ozone data is obviously reflected in stratosphere above high latitude in southern hemisphere, upper-middle stratosphere and lower mesosphere above midde-high latitude in northern hemisphere. The forecast verification based on ERA5 reanalysis suggests that the advantages of assimilating shows more pronouncedly in high latitude area in northern hemispere, where analysis quality of ozone in middle-upper stratosphere and lower mesosphere is improved and analysis errors of temperature in upper stratosphere and lower mesosphere and zonal wind in lower mesosphere .are reduced. The verification of 0-10d ozone forecast based on MLS ozone observations shows that adding SABER and MLS ozone data assimilation in WACCM+DART can better improve 0-5d ozone forecasting result of WACCM in lower stratosphere and lower mesosphere relative to control experiment.
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