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 ›› 2013, Vol. 29 ›› Issue (5): 106-111.doi:

• 论 文 • 上一篇    下一篇

IGRA全球站点探空数据集介绍及其资料质量状况分析

陈哲1 高杰杨旭3   

  1. 1.国家气象信息中心,北京100081;2. 辽宁省气象信息中心,辽宁 沈阳110016;3. 辽宁省人工影响天气办公室,辽宁 沈阳110016
  • 出版日期:2013-10-31 发布日期:2013-10-31

Introduction of IGRA dataset and analysis of its data quality

CHEN Zhe1 GAO Jie2 YANG Xu 3   

  1. 1. National Meteorological Information Center, Beijing 100081,China; 2. Liaoning Meteorological Information Center, Shenyang 110166, China; 3. Liaoning Modification Weather Office, Shenyang 110166, China
  • Online:2013-10-31 Published:2013-10-31

摘要: 美国国家气候数据中心(NCDC)研制的全球站点无线电探空资料数据集(The Integrated Global Radiosonde Archive,简称IGRA)包含全球1538个探空站点从1938年至今的多层次、多要素逐日探空资料。该数据是目前全球范围内时空密度最高、资料最为完整的一套高质量探空站点资料数据集。对该数据集概况及探空资料的质量控制过程进行了概述,并对该资料存在的质量问题进行分析。结果表明:该数据集虽然进行了质量控制,但是该数据集中部分资料的质量仍然存在问题,如该套资料中1973年之前的中国区域探空温度资料存在较大的问题,与国家气象信息中心整理的中国区域探空资料相比,两套资料中各站在1973年以前的不一致率都达到了70 %以上。另外,该套资料中风速资料在1975—1978年以及1981年错误较多,这5 a中出现的错误资料占所有错误资料的50.74 %。而这5 a中错误资料的分布也比较集中,风速出错站点主要分布在美国南部和阿拉斯加、非洲中部和南部以及俄罗斯。全球大部分探空台站通过全球通讯系统进行传输资料集中在1980年以后,因此本数据集中1980年以后的探空资料质量和完整性相对较高。结论和分析为用户使用该数据集提供了很好的参考依据。

关键词: IGRA数据集, 全球, 探空资料, 资料质量

Abstract: The integrated global radiosonde archive (IGRA) is developed by the American national climatic data center (NCDC), and the dataset includes the multi-level, multi-daily radiosonde data elements of 1538 worldwide sounding stations from 1938 till now. The IGRA has the highest space-time density, and is the most complete and high-quality sounding dataset in the world. The IGRA dataset and its quality control were introduced and its data quality was analyzed. The results indicate that although this dataset has data quality control, it still has some problems. For example, the inconsistent rate of data from the IGRA and NMIC (Chinese national meteorological information center) datasets exceeds 70% for the sounding temperature data in China before 1973. The improper wind speed data from the IGRA are mainly from 1975 to 1978 and in 1981 and its rate accounts for 50.74 % among the wrong wind data in the above five years, and most wrong wind data concentrates in stations of the south American, the middle and south Africa and Russia. Most radiosonde data in the world are transported by the global communication system after 1980, so the quality and integrity of the radiosonde data from the IGRA after 1980 are relatively high. This paper can offer a reference to dataset users.

Key words:  IGRA dataset, Globe, Radiosonde data, Data quality