Plateau Meteorology

Plateau Meteorology >

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

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

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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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

Cite this article

MA Chenchen , YU Ye , HE Jianjun , CHEN Xing , XIE Jin . Analyses of Simulation Result in Loess Plateau by WRF Model with Two Reanalysis Data[J]. Plateau Meteorology, 2014 , 33(3) : 698 -711 . DOI: 10.7522/j.issn.1000-0534.2014.00038

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