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冰川冻土 ›› 2019, Vol. 41 ›› Issue (3): 689-696.doi: 10.7522/j.issn.1000-0240.2019.0013

• 寒旱区水文水资源 • 上一篇    下一篇

TRMM 3B43卫星降水数据在京津冀地区的适用性研究

杨荣芳1, 曹根华1, 张婧2,3   

  1. 1. 河北省气象服务中心, 河北 石家庄 050021;
    2. 河北省气候中心, 河北 石家庄 050021;
    3. 河北省气象与生态环境实验室, 河北 石家庄 050021
  • 收稿日期:2018-08-28 修回日期:2018-10-10 出版日期:2019-06-25 发布日期:2019-09-10
  • 通讯作者: 张婧,E-mail:343617032@qq.com. E-mail:343617032@qq.com
  • 作者简介:杨荣芳(1981-),女,河北定州人,副高级工程师,2008年在中国科学技术大学获硕士学位,从事数据处理和应用研究.E-mail:464322028@qq.com
  • 基金资助:
    中国气象局气候变化专项(CCSF201851)资助

Research of TRMM3B43 satellite precipitation data applicability in Beijing-Tianjin-Hebei Region

YANG Rongfang1, CAO Genhua1, ZHANG Jing2,3   

  1. 1. Hebei Province Meteorology Service Center, Shijiazhuang 050021, China;
    2. Hebei Province Climate Center, Shijiazhuang 050021, China;
    3. Hebei Key Laboratory of Meteorology and Environmental, Shijiazhuang 050021, China
  • Received:2018-08-28 Revised:2018-10-10 Online:2019-06-25 Published:2019-09-10

摘要: 以京津冀地区为研究区域,利用散点斜率法、相对偏差、均方根误差和相关系数法,对研究区域内176个国家级雨量站2006-2015年的实测降水资料在不同时空尺度下检验了同期TRMM (Tropical Rainfall Measurement Mission)卫星降水产品3B43 V7的适用性。结果表明:TRMM 3B43多年均降水量与站点实测降水时空分布规律一致,在不同时间尺度下具有良好的相关性,相关系数均在0.85以上,随时间尺度的增加精度有所降低;整体上TRMM 3B43降水数据略小于站点实测降水,在常年降水高值区域出现低估现象,季尺度上,夏季和冬季误差较大;就区域而言,TRMM 3B43在西北山地高原地区相对偏差和均方根误差均较小,相关系数基本在0.9以上,拟合精度较高,可信度较强。

关键词: 降水, TRMM 3B43, 适用性, 京津冀地区

Abstract: Based on the precipitation data observed from 176 national benchmark climate stations and principal stations in Beijing-Tianjin-Hebei Region, the accuracy of the TRMM (Tropical Rainfall Measuring Mission Satellite) 3B43 V7 rainfall product is tested and analyzed with slope of scatter, relative deviation, root mean square error and correlation coefficient. The results show that the mean precipitation of TRMM 3B43 is consistent with the observed precipitation, and has a good correlation in different time scales. The correlation coefficients are all above 0.85, and the precision decreases with the increase of time scales. The precipitation of TRMM 3B43 is slightly smaller than the observed precipitation of the stations on the whole. The phenomenon of underestimation occurs in the regions with high annual precipitation. In seasonal scale, the precision is lower in summer and winter. Regionally, the relative deviation and root mean square error of TRMM 3B43 in the northwest mountainous and plateau regions are smaller, the correlation coefficient is basically above 0.9, the fitting accuracy is higher with strong credibility.

Key words: precipitation, TRMM 3B43, applicability, Beijing-Tianjin-Hebei Region

中图分类号: 

  • P333.1