主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2011, Vol. 27 ›› Issue (5): 58-65.doi:

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4种再分析资料在中国区域的适用性研究进展

谢潇1,2  何金海1,2 祁莉1,2   

  1. 1. 南京信息工程大学气象灾害省部共建教育部重点实验室，江苏 南京 210044; 2. 南京信息工程大学大气科学学院，江苏 南京 210044
  • 出版日期:2011-10-30 发布日期:2011-10-30

A review on applicability evaluation of four reanalysis datasets in China

XIE Xiao 1,2  HE Jin-hai1,2  QI Li1,2   

  1. 1. Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2. Department of Atmospheric Science, Nanjing University of Information Science & Technology, Nanjing 210044, China
  • Online:2011-10-30 Published:2011-10-30

PDF (PC)

1066

被引次数

27

摘要： 根据NCEP/NCAR、NCEP/DOE、ERA-40和JRA-25共4种比较常用的再分析资料在中国区域的适用性研究作了概述。结果表明：发现4种资料既呈现出一定的共性，又在不同区域、不同时间尺度上差异显著。再分析资料的可信度普遍表现为在东部地区好于西部地区，低纬地区好于高纬地区，这可能与中国地面气象站点“东密西疏”有关；1979年前的再分析资料存在较大的不确定性，因此应用该时段NCEP/NCAR资料研究长期气候变化研究时需要谨慎；再分析资料的不同要素在不同时间、不同地域的适用性不同，因此应分区域、分要素、分季节选择合适的资料。从不同角度研讨了再分析资料的优缺点及在中国区域的适用性，旨在为中国区域气候变化研究选用再分析资料提供借鉴和参考。

关键词: NCEP/NCAR, NCEP/DOE, ERA-40, JRA-25, 适用性研究

Abstract: The applicability of four reanalysis datasets in regional climate change research in China are reappraised and summarized, including NCEP/NCAR dataset, NCEP/DOE dataset, ERA-40 dataset and JRA-25 dataset. The results indicate that four datasets are of some commonness and also of discrepancies in different region and different time scales. Probably due to the distribution features of meteorological stations in China, namely, dense in the eastern China and sparse in the western China, the reliability of the reanalysis datasets is generally better in the eastern than in the western China, and greater in low latitude area than in high latitude area. The reanalysis datasets have the greater uncertainty before 1979, so it should be more cautions to use the NCEP/NCAR reanalysis dataset of this period, especially for the study of long-term climate change. The applicability of different variables of reanalysis datasets is different at different time scales and areas, so the optimum dataset should be selected based on area, element and season. Finally, merit and shortage of reanalysis datasets and applicability in China are summarized. This study could provide references for choosing reanalysis datasets of the regional climate change research.

Key words: NCEP/NCAR, NCEP/DOE, ERA - 40, JRA - 25, Applicability research