高原气象

高原气象 >

2014 , Vol. 33 >Issue 3: 698 - 711

DOI: https://doi.org/10.7522/j.issn.1000-0534.2014.00038

论文

黄土高原地区两种再分析资料的模拟效果分析

  • 马晨晨 ,
  • 余晔 ,
  • 何建军 ,
  • 陈星 ,
  • 解晋
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  • 中国科学院寒区旱区环境与工程研究所 寒旱区陆面过程与气候变化重点实验室, 兰州 730000;2. 中国科学院大学, 北京 100049;3. 中国科学院平凉雷电与雹暴实验站, 平凉 744015

收稿日期: 2013-09-30

  网络出版日期: 2014-06-28

基金资助

国家重点基础研究发展计划（2014CB441404）；国家自然科学基金项目（41175009）

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Analyses of Simulation Result in Loess Plateau by WRF Model with Two Reanalysis Data

  • MA Chenchen ,
  • YU Ye ,
  • HE Jianjun ,
  • CHEN Xing ,
  • XIE Jin
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  • Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science, Lanzhou 73000, China;2. University of Chinese Academy of Science, Beijing 100049, China;3. Pingliang Station of Lightning and Hail Research, Chinese Academy of Sciences, Pingliang 744015, China

Received date: 2013-09-30

  Online published: 2014-06-28

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摘要

为了研究两种再分析资料（NCEP和ERA-Interim）对中尺度模式WRF模拟结果的影响，利用地面观测资料和探空资料，通过NCEP/WRF和ERA/WRF两组模拟试验，探讨了这两种再分析资料在黄土高原地区对WRF模式模拟结果的影响。结果表明，两组试验都能准确地模拟出2 m气温、 相对湿度和地表温度的日变化，且ERA/WRF的模拟效果较好；由于黄土高原地形复杂，两组试验对10 m风速的模拟都不好；两组试验对地表辐射和地表通量的模拟结果相当，都能大致模拟出辐射各分量和地表通量的日变化，模拟偏差主要出现在正午时段；两组试验对大气边界层结构的模拟结果相似，对位温和比湿的模拟效果较好，与观测值的相关系数都在0.8以上，对风速的模拟效果稍差，与观测值的相关系数分别为0.64和0.60，NCEP/WRF对大气边界层结构的模拟结果比ERA/WRF好。

关键词： WRF模式; NCEP再分析资料; ERA-Interim再分析资; 黄土高原

本文引用格式

马晨晨 , 余晔 , 何建军 , 陈星 , 解晋 . 黄土高原地区两种再分析资料的模拟效果分析[J]. 高原气象, 2014 , 33(3) : 698 -711 . DOI: 10.7522/j.issn.1000-0534.2014.00038

Abstract

WRF is one of the most widely used numerical weather prediction models, for which reanalysis data provide initial and lateral boundary conditions. Different reanalysis products may affect WRF simulation results differently. Taking Loess Plateau as research area, two WRF experiments (NCEP/WRF and ERA/WRF), using surface observation data and sounding data, taking NCEP and ERA-Interim reanalysis as initial and boundary conditions, respectively, were conducted to evaluate the influence of different reanalysis products on WRF simulations. The results indicated that both experiments can accurately reproduce the diurnal variation of 2 m temperature, 2 m relative humidity and surface temperature, with ERA/WRF giving better results than NCEP/WRF. Due to the complex terrain in the studied area, model performance for 10 m wind speed was poor. Both experiments cauld approximately simulate the diurnal variation of radiation components and ground heat fluxes. The deviation from observations mainly appeared at noon. Both experiments captured the variation of potential temperature and specific humidity in the atmospheric boundary layer well with correlation coefficient higher than 0.8. However, the performance for wind speed was not as good, with correlation coefficients of 0.63 and 0.60, respectively, for NCEP/WRF and ERA/WRF experiments. NCEP/WRF performed better than ERA/WRF in the atmospheric boundary layer.

Key words： WRF model; NCEP reanalysis data; ERA-interim reanalys; Loess Plateau

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