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冰川冻土 ›› 2020, Vol. 42 ›› Issue (3): 1046-1056.doi: 10.7522/j.issn.1000-0240.2020.0077

• 冰冻圈与可持续发展 • 上一篇    下一篇

4种再分析气温资料在羌塘国家级自然保护区的适用性研究

丁敏1(), 杜军2(), 肖天贵1   

  1. 1.成都信息工程大学,四川 成都 210044
    2.西藏高原大气环境科学研究所,西藏 拉萨 850001
  • 收稿日期:2019-09-08 修回日期:2020-06-05 出版日期:2020-10-31 发布日期:2020-12-08
  • 通讯作者: 杜军 E-mail:827830023@qq.com;dujun0891@163.com
  • 作者简介:丁敏(1994 - ), 女, 山西忻州人, 2018年在南京信息工程大学获学士学位, 现为成都信息工程大学在读硕士研究生, 从事高原气象研究. E-mail: 827830023@qq.com
  • 基金资助:
    国家自然科学基金项目(41765011)

Applicability of the four reanalysis temperature data in Chang Tang Nature Reserve

Min DING1(), Jun DU2(), Tiangui XIAO1   

  1. 1.Chengdu University of Information Technology,Chengdu 210044,China
    2.Tibet Institute of Plateau Atmospheric and Environmental Science Research,Lhasa 850001,China
  • Received:2019-09-08 Revised:2020-06-05 Online:2020-10-31 Published:2020-12-08
  • Contact: Jun DU E-mail:827830023@qq.com;dujun0891@163.com

摘要:

利用1979 - 2018年羌塘国家级自然保护区边缘的3个气象站点狮泉河(西部)、 申扎(中部)和安多(东部)的观测气温(OT), 与ERA-Interim(ET)、 NCEP/NCAR(NT1)、 NCEP/DOE(NT2)和JRA-55(JT)4种再分析气温资料, 从年际变化和年变化两方面采用多年气温变化趋势、 均方差、 相关性等参数方法在羌塘自然保护区进行了适用性研究。结果表明: 从多年平均气温年际变化来看, 4种再分析资料在狮泉河(西部)的适用性较差, JRA-55资料在安多(东部)和申扎(中部)的适用性较好, 且冬季再分析气温资料与观测气温的相关性好于夏季; 从多年平均气温年变化来看, 均表现为冬季(1月或12月)最低, 夏季(7月或8月)最高的“单峰型”变化。综合来看, JRA-55资料在羌塘自然保护区的适用性较好, ERA-Interim对多年气温趋势变化表现不准确, NCEP/NCAR和NCEP/DOE与观测气温相比显著偏低。

关键词: 羌塘国家级自然保护区, 观测气温, 再分析气温, 气温年际变化, 气温年变化

Abstract:

Using the observation temperature (OT) in Shiquanhe (west), Shenzha (middle part) and Anduo (east) in the edge of the Chang Tang Nature Reserve from 1979 to 2018, together with the ERA-Interim (ET), NCEP/NCAR (NT1), NCEP/DOE(NT2) and JRA-55(JT) reanalyzed temperature data, an applicability study was carried out from two aspects of annual and monthly mean variations using the parameters, such as perennial temperature variation, mean square deviation and correlation. The results show that from the perspective of annual and monthly variations, the four kinds of reanalysis data have poor applicability in Shiquanhe (west), and JRA-55 data have good applicability in Anduo (east) and Shenzha (middle); the correlation between the reanalysis temperature data and the observed temperature in winter is better than that in summer. In terms of monthly mean temperature, one can see a minimum in winter (January or December) and a maximum in summer (July or August). On the whole, the JRA-55 data has a good applicability in Chang Tang Nature Reserve. According to the studies on the annual temperature change and monthly temperature change, JRA-55 has the best correlation with the observed temperature, while ERA-Interim temperature trend is not accurate and NCEP/NCAR and NCEP/DOE are significantly lower.

Key words: Chang Tang Nature Reserve, observed temperature, reanalysis temperature, annual variation, monthly variation

中图分类号: 

  • P468