GRAPES模式在华南地区风场模拟中的性能评价

IF 1.5 4区 地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES 热带气象学报 Pub Date : 2020-01-01 DOI:10.46267/J.1006-8775.2021.001
Zhong Shuixin, Chen Zi-tong, Ding Wei-yu, XU Dao-sheng, Zhang Yanxia, Wu Kai-xin, Liang Jia-hao, T. Qun, Wang Li-wen
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引用次数: 2

摘要

本文对GRAPES模式在华南地区风场模拟中的性能进行了评价。利用地面观测和南方两个测深站对模拟结果进行了评价。结果表明,GRAPES模式能较好地模拟风的分布和日变化。特别是珠江三角洲地区和江西南部以及华南沿海地区,南风风速普遍高估。在夜间至早晨期间,在广西东部和江西南部也有大量的地面风向相反的站点,并且在下午沿海地区的地面风总体高估。GRAPES虽然能够模拟垂直风廓线的一般演化特征,但对900 hPa以上风速的估计偏低,对900 hPa以下风速的估计过高。虽然重力波阻力参数化方案被证明是缓解风模拟系统偏差的有效方法,但GRAPES在风模拟中仍然存在较大的误差,特别是对流层下层和上层。
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Performance Evaluation of the GRAPES Model in Wind Simulations Over South China
In the present study, the performance of the GRAPES model in wind simulation over south China was assessed. The simulations were evaluated by using surface observations and two sounding stations in south China. The results show that the GRAPES model could provide a reliable simulation of the distribution and diurnal variation of the wind. It showed a generally overestimated southerly wind speed especially over the Pearl River Delta region and the south of Jiangxi Province as well as the coastal region over south China. GRAPES also exhibited a large number of stations with the opposite surface wind directions over the east of Guangxi and the south of Jiangxi during the nocturnal-to-morning period, as well as an overall overestimation of surface wind over the coastal regions during the afternoon. Although GRAPES could simulate the general evolutional characteristics of vertical wind profile, it underestimated wind speed above 900 hPa and overestimated wind speed below 900 hPa. Though the parameterization scheme of gravity wave drag proved to be an effective method to alleviate the systematic deviation of wind simulation, GRAPES still exhibited large errors in wind simulation, especially in the lower and upper troposphere.
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来源期刊
热带气象学报
热带气象学报 METEOROLOGY & ATMOSPHERIC SCIENCES-
CiteScore
1.80
自引率
8.30%
发文量
2793
审稿时长
6-12 weeks
期刊介绍: Information not localized
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