Retrieval of Total Ozone from TOVS Data and Its Comparison with Brewer Observations in Antarctic Spring
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摘要: 通过改进臭氧的统计反演算法,从NOAA卫星的TOVS资料中提取了1993年南极臭氧洞期间中山站上空大气臭氧含量的资料。本文的结果与NOAA的TOVS臭氧产品以及中山站的Brewer观测进行了比较。尽管3种资料对在臭氧洞期间臭氧含量的显著减少这一特征上相当一致,但此项结果相对于Brewer观测,其均方根误差29 DU,优于NOAA的业务反演产品。此外,还初步讨论了这两种反演的误差特征。Abstract: Total ozone during the period of Antarctic ozone hole of 1993 at Zhongzhan station in Antarctica is extracted from TOVS data of NOAA-12 by using an improved statistical regression scheme. The present results, NOAA’s ozone retrievals and surface Brewer observations were compared with each other, it is found that although the three kinds of data are in good agreement for the remarkable decrease of ozone amounts, corresponding to Brewer observations, both the present results and NOAA’s retrieval products have larger errors with 29 and 34 Dobsons of RMS, respectively. Obviously, the former is superior to the latter. Additionally, the characteristics of the two retrieval error were discussed.
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Key words:
- Antarctic ozone;
- Satellite remote sensing;
- Retrieval from TOVS
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