干旱区研究

干旱区研究 >

2018 , Vol. 35 >Issue 2: 395 - 403

DOI: https://doi.org/10.13866/j.azr.2018.02.18

气候及气候资源

基于TRMM卫星数据的蒙古高原降水精度评估与季节分布特征

  • 秦福莹 ,
  • 贾根锁 ,
  • 杨劼 ,
  • 那音太 ,
  • 侯美亭 ,
  • 包玉海
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  • 1.内蒙古大学生态与环境学院,内蒙古 呼和浩特 010021;
    2.内蒙师范大学地理科学学院,内蒙古 呼和浩特 010022;
    3.中国科学院大气物理研究所中国科学院东亚区域气候－环境重点实验室,北京 100029;
    4.日本酪農学園大学酪農学研究科,北海道 0698501;
    5.中国气象局气象干部培训学院,北京 100081
秦福莹(1982-),女,讲师,博士研究生,研究方向为区域植被与气候变化研究. E-mail: nsdqinfuying@163.com
贾根锁. E-mail: jiong@tea.ac.cn

收稿日期: 2017-11-03

  修回日期: 2017-12-19

  网络出版日期: 2025-11-17

基金资助

中国科学院国际合作一带一路专项:气候变化研究及观测计划(134111KYSB20160010);“海洋气候数据集生成与分析”(2016YFA0600102,ZDW1704);国家自然科学基金项目(61661045);中国气象局气候变化专项(CCSF201706)资助

收起

Accuracy Evaluation and Seasonal Distribution of Precipitation over the Mongolian Plateau Based on TRMM Data

  • QIN Fu-ying ,
  • JIA Gen-suo ,
  • YANG Jie ,
  • NA Yin-tai ,
  • HOU Mei-ting ,
  • BAO Yu-hai
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  • 1. College of Ecology and Environment Science,Inner Mongolia University,Hohhot 010021,Inner Mongolia,China;
    2. College of Geographical Science,Inner Mongolia Normal University,Hohhot 010022,Inner Mongolia,China;
    3. CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China;
    4. Graduate School of Dairy Sciences,Rakuno Gakuen University,Hokkaido 069-8501,Japan;
    5. China Meteorological Administration Training Centre,Beijing 100081,China

Received date: 2017-11-03

  Revised date: 2017-12-19

  Online published: 2025-11-17

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摘要

采用蒙古高原134个气象站点的降水量数据作为地面验证数据,对新一代TRMM卫星降水产品(3B43 V7)进行了精度评估,并分析了最近19 a蒙古高原降水的空间和季节分布特征。结果表明:月尺度TRMM 3B43数据与站点数据之间呈显著正相关,拟合优度R2达到0.88(P<0.01),具有较好的一致性;近19 a,基于TRMM的年均降水量总体上呈显著上升趋势,上升速率为32.1 mm·(10a)-1(P<0.05),但存在一定的空间差异,其中,高原东北部、中北部和西南地区降水量呈增加趋势,高原西部、东北部大兴安岭以西和东南部降水量呈减少趋势;季节分布上,除了冬季呈略微减少趋势外,其他季节都呈增加趋势,且四季降水量的年际变化也具有明显的空间分异。

关键词： 降水量; 精度评估; 季节分布; TRMM; 蒙古高原

本文引用格式

秦福莹 , 贾根锁 , 杨劼 , 那音太 , 侯美亭 , 包玉海 . 基于TRMM卫星数据的蒙古高原降水精度评估与季节分布特征[J]. 干旱区研究, 2018 , 35(2) : 395 -403 . DOI: 10.13866/j.azr.2018.02.18

Abstract

Accuracy of the latest version satellite product TRMM 3B43 V7 for precipitation over the Mongolian Plateau was evaluated based on the observational precipitation data from 134 meteorological stations,and the spatial and seasonal distribution of precipitation in recent 19 years was analyzed. The results showed that there was a significant positive correlation between TRMM and observational precipitation data at monthly scale,and the determination coefficient R2 was 0.88 (P<0.01),which indicated a good consistency between them. The inter-annual variation of annual precipitation showed a significant upward trend at the rate of 32.1 mm (10a)-1 (P<0.05) in recent 19 years. However,there were certain spatial differences:an increase trend of precipitation was observed in the northeast,north and southwest of the Mongolian Plateau,but a decrease trend in the west and southeast of the plateau and in the region west of the Greater Khingan Mountains.Regarding the inter-annual variation of seasonal precipitation,winter precipitation was in a decrease trend,while precipitation in other three seasons was in an increase trend,especially in summer and autumn,the 69.2% and 81.8% areas of the total area were in an increase trend in summer and autumn respectively.There was an obvious spatial differentiation in seasonal precipitation,the decrease of spring precipitation occurred mainly in the west of the plateau,and the significant increase of that in the eastern and northern parts of the plateau; the significant increase of summer precipitation occurred mainly in the southwestern and western-northern parts of the plateau; the significant increase of autumn precipitation occurred mainly in the southern and southeastern parts of the plateau; and the significant decrease of winter precipitation occurred mainly in the west plateau.

Key words： precipitation; accuracy evaluation; seasonal distribution; TRMM; Mongolian Plateau

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