Plateau Meteorology

Plateau Meteorology >

2020 , Vol. 39 >Issue 2: 367 - 377

DOI: https://doi.org/10.7522/j.issn.1000-0534.2019.00108

Research and Application of a Three-dimensional Interpolation Method for High-resolution Temperature in Complex Terrain based on Gaussian Fuzzy

  • Kangkai CHEN ,
  • Linye SONG ,
  • Lu YANG ,
  • Mingxuan CHEN ,
  • Min CHEN ,
  • Lei HAN ,
  • Weihua CAO
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  • <sup>1.</sup>Ocean University of China, Qingdao 266100, Shandong, China;<sup>2.</sup>Beijing Institute of Urban Meteorology, Beijing 100089, China

Received date: 2019-09-23

  Online published: 2020-04-28

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Abstract

In the release of numerical model forecasting products, there is a need to consider the difference between the model terrain and the actual terrain.This paper proposes a combined approach of three-dimensional interpolation and Gaussian fuzzy algorithm method to high-resolution temperature in areas with complex terrain.Specifically, the release of numerical model forecasting products is achieved by two processes: (1) A three-dimensional interpolation is first applied to obtain interpolated results of the model terrain and the actual terrain for a given critical height; (2) The interpolated results are then processed with the Gaussian fuzzy algorithm.The proposed method is applied to study 100 m high-resolution refined temperature product released in the key area of the Beijing Winter Olympics.By comparing the original numerical prediction outputs and the refined interpolated released products with observed temperature at the automatic weather station from 4 to 19 February 2019, it is found that the refined interpolated released products are better than the original numerical outputs as demonstrated by its refined aesthetics and a significant reduction in associated mean absolute error, root-mean-square error and BIAS between estimated and observed values in the high resolution temperature fields.Hence, the results demonstrate that the three-dimensional interpolation method based on Gaussian fuzzy proposed in this study can not only ensure the aesthetics and refinement of the released products, but more importantly, reduce the errors and improve the accuracy of the products.

Key words： High-resolution; three-dimensional in; terrain difference; Gaussian fuzzy algor

Cite this article

Kangkai CHEN , Linye SONG , Lu YANG , Mingxuan CHEN , Min CHEN , Lei HAN , Weihua CAO . Research and Application of a Three-dimensional Interpolation Method for High-resolution Temperature in Complex Terrain based on Gaussian Fuzzy[J]. Plateau Meteorology, 2020 , 39(2) : 367 -377 . DOI: 10.7522/j.issn.1000-0534.2019.00108

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