中山大学学报自然科学版 ›› 2011, Vol. 50 ›› Issue (5): 128-134.

• 研究论文 • 上一篇    下一篇

NCEP/NCAR(Ⅰ、Ⅱ)和ERA40再分析加热资料比较

王同美1,2,吴国雄2,应 明3   

  1. (1.中山大学大气科学系,广东广州 510275;2.中国科学院大气物理研究所LASG,北京 100029;3.中国气象局上海台风研究所,上海 200030)
  • 收稿日期:2010-11-20 修回日期:1900-01-01 出版日期:2011-09-25 发布日期:2011-09-25

Comparison of Diabatic Heating Data from NCEP/NCAR(Ⅰ,Ⅱ)and ERA40

WANG Tongmei1,2,WU Guoxiong2, YING Ming3
  

  1. (1. Department of Atmospheric Sciences, Sun Yatsen University, Guangzhou 510275, China;2. LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;3. Shanghai Typhoon Institute, China Meteorological Administration, Shanghai 200030, China)
  • Received:2010-11-20 Revised:1900-01-01 Online:2011-09-25 Published:2011-09-25

摘要: 气候统计和诊断分析常用到NCEP-1、NCEP-2和ERA40再分析资料。其中的加热资料为C类资料,对其使用常常存疑。对上述3类资料中的垂直积分的总加热率和地表感热通量进行比较,以分析其在亚洲地区特别是在高原和亚洲热带地区的适用性。结果表明:垂直积分的总非绝热加热在空间分布上三套资料基本一致,NCEP两套资料在大值中心的分布上相似,但量值上NCEP-2和ERA-40比较接近,此外ERA-40在青藏高原南缘的加热估算比NCEP大;对于青藏高原区域平均的非绝热加热,无论是季节变化还是年际变率,三套资料在量级以及变化趋势上都有较好的一致性,特别是平均感热通量的年际变化,三者相关系数超过99%甚至99.9%置信度检验,因此对亚洲包括青藏高原地区使用再分析加热率资料,在一定程度上是合理可行的。

关键词: 非绝热加热, 再分析资料, 青藏高原

Abstract: Diabatic heating data from NCEP (1 and 2) and ERA40 are compared to analyze the applicability of these data in the Asian region, particularly in the Tibet Plateau(TP) and tropical Asia. In spite of slight difference in vertical integration of total diabatic heating rates from three data sets, the spatial distribution shows good agreement. Seasonal and interannual variability of the mean diabatic heating over TP shows agreement in the magnitude and trend. Particularly, the correlation coefficients of interannual variability of the mean sensible heat flux over TP among three data sets exceed 99% or even 999% confidence level. Therefore, the reanalysis diabatic heating data over Asia, even over TP area, are feasible to a certain extent.

Key words: diabatic heating, data comparison, the Tibet Plateau

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