Effects of spectral nudging on the 2010 East Asia summer monsoon using WRF model

Haixia Shan; Yuping Guan; Jianping Huang

doi:10.1007/s00343-012-1272-y

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Effects of spectral nudging on the 2010 East Asia summer monsoon using WRF model

Updated：2023-05-16

- Effects of spectral nudging on the 2010 East Asia summer monsoon using WRF model
- Journal of Oceanology and Limnology Vol. 30, Issue 6, Pages: 1105-1115(2012)
- Affiliations：
  
  1. Key Laboratory for Semi-Arid Climate Change of the Ministry of Education College of Atmospheric Science Lanzhou University
  2. State Key Laboratory of Tropical Oceanography South China Sea Institute of Oceanology Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-012-1272-y
  CLC：
- Online First：17 November 2012，
  
  Published：2012
- Accepted：
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Shan, H., Guan, Y. & Huang, J. Effects of spectral nudging on the 2010 East Asia summer monsoon using WRF model., Chin. J. Ocean. Limnol. 30, 1105–1115 (2012). https://doi.org/10.1007/s00343-012-1272-y
DOI：

Shan, H., Guan, Y. & Huang, J. Effects of spectral nudging on the 2010 East Asia summer monsoon using WRF model., Chin. J. Ocean. Limnol. 30, 1105–1115 (2012). https://doi.org/10.1007/s00343-012-1272-y DOI：

摘要

Abstract

The performance of spectral nudging in an investigation of the 2010 East Asia summer monsoon was assessed using the Weather Research and Forecasting (WRF) model

forced by 1-degree NCEP Global Final Analysis (FNL). Two pairs of experiments were made

spectral nudging (SP) and non-spectral nudging (NOSP)

with five members in each group. The members were distinguished by different initial times

and the analysis was based on the ensemble mean of the two simulation pairs. The SP was able to constrain error growth in large-scale circulation in upper-level

during simulation

and generate realistic regional scale patterns. The main focus was the model ability to simulate precipitation. The Tropical Rainfall Measuring Mission (TRMM) 3B42 product was used for precipitation verification. Mean precipitation magnitude was generally overestimated by WRF. Nevertheless

SP simulations suppressed overestimation relative to the NOSP experiments. Compared to TRMM

SP also improved model simulation of precipitation in spatial and temporal distributions

with the ability to reproduce movement of rainbands. However

extreme precipitation events were suppressed in the SP simulations.

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Keywords

references

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