Download - Liao Chi-Chang 1 Lo Ming-Fu 2 1 Chung Cheng Institute of Technology National Defense University
112/04/21 1
Liao Chi-Chang1 Lo Ming-Fu2
1Chung Cheng Institute of Technology National Defense University2Chinese Naval Meteorological and Oceanographic Office
Analysis on the simulation and verification of weather system in
East Asia by using nested Regional Spectral Model.
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1. Foreword
2. Procedure
3. Case simulation and analysis
4. Summary
Outline
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1. ForewordThe ultimate goal of model
verification is to improve weather forecasting ability.
Model verification is to amend the error.
This research utilizes the earlier (f97) and new versions (New-RSM) of the nested Regional Spectral Model.
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2.Procedure
Modeloutputs
RSM:PressureTemp.WindHeightHumidity
MSM:PressureTemp.
Feature of f97 and NRSMCompare
CWB observation station data
Compare NCEP analytic field
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Research Area
RSM
MSM
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Model setting
GSM RSM MSM
△x( km) 120 60 5
△t( s) 120 60 5
Vertical level 18 28 28
I*J grid 360*180 96*73 108*107
Range global 5°N - 43°N; 95°E - 150°E
21.5°N-26°N ;
118°E-122.5°E
Make NRSM and f97 version have the same condition
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Data sources and case select
NCEP Reanalysis data.
This research selects the “Northeast
monsoon period" and "Mei-Yu
season period" case simulation.
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3.Case simulation and analysis
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2008.12.03~08 surface chart
Northeast monsoon
2008.12.21~26 surface chart
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F97
NRSM
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F97
NRSM
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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2008.06.04~09 surface chart
Mei-Yu season
2008.06.13~18 surface chart
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F97
NRSM
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F97
NRSM
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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CWB
F97
NRSM
彭佳嶼 基隆 板橋淡水
台中 梧棲
高雄 恆春
澎湖 東吉島
蘇澳 花蓮
台東 成功 蘭嶼
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4. Summary
Northeast monsoon period
In RSM, the surface pressure, the temperature, the wind and the lower height field and the humidity field results showed that NRSM is better than f97.
In MSM, the surface pressure field of the NRSM is closer to the observation data than f97. The temperature of the NRSM dropped abnormally, but f97 have not such phenomenon.
Mei-Yu Season period
In RSM, the surface pressure, the temperature, the lower level height field and the humidity field results showed that the NRSM is better than f97.
In MSM, the surface pressure field of NRSM is closer to the observation data, and no " temperature dropped abnormally".
The results show that the NRSM is better than f97 overall, and it means that the NRSM have a considerable degree of improvement.
Thanks for your attention