Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-018-04607-x |
Object-based precipitation system bias in grey zone simulation: the 2016 South China Sea summer monsoon onset | |
Su, Chun-Yian1,2; Wu, Chien-Ming1; Chen, Wei-Ting1; Chen, Jen-Her2 | |
2019-07-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:617-630 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan |
英文摘要 | This study aims to evaluate the precipitation bias in the grey zone simulation (15km) using the Central Weather Bureau Global Forecast System (CWBGFS). We develop a new evaluation method using the object-based precipitation system (OPS) to examine the bias associated with the degree of convection organization. The 2016 South China Sea (SCS) Summer Monsoon onset is selected to evaluate the model's performance due to its sharp transition of large-scale circulation, which contributes to the complexity of precipitation pattern. The results based on OPS show that the observed precipitation tends to aggregate toward the central part of SCS during the post-onset period, while the precipitation in the model distributes more sparsely over the ocean. The observed precipitation intensity increases with the size of OPS especially for the extremes; however, the model underrepresents the relationship between the precipitation spectrum and the size of OPS. Moreover, the model simulates earlier diurnal peak time of precipitation over land in the organized systems than observation. The results also suggest that the convection scheme is insensitive to column moisture during the pre-onset period which seems to be one of the key factors to the excessive precipitation in the model. Using high horizontal resolution, however, does not improve the simulation of precipitation much in the model. The current study suggests that the precipitation bias related to aggregation of the convective systems should be regarded as an essential objective of model evaluation and improvement. |
英文关键词 | Object-based precipitation system Precipitation bias Grey zone simulation Degree of convection organization South China Sea summer monsoon onset |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471722400037 |
WOS关键词 | CLOUD-RESOLVING MODEL ; MOIST CONVECTION ; GENERAL-CIRCULATION ; DIURNAL CYCLE ; RESOLUTION ; PARAMETERIZATION ; RAINFALL ; CERES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184393 |
专题 | 气候变化 |
作者单位 | 1.Natl Taiwan Univ, Dept Atmospher Sci, 1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan; 2.Cent Weather Bur, 64 Gongyuan Rd, Taipei 10048, Taiwan |
推荐引用方式 GB/T 7714 | Su, Chun-Yian,Wu, Chien-Ming,Chen, Wei-Ting,et al. Object-based precipitation system bias in grey zone simulation: the 2016 South China Sea summer monsoon onset[J]. CLIMATE DYNAMICS,2019,53:617-630. |
APA | Su, Chun-Yian,Wu, Chien-Ming,Chen, Wei-Ting,&Chen, Jen-Her.(2019).Object-based precipitation system bias in grey zone simulation: the 2016 South China Sea summer monsoon onset.CLIMATE DYNAMICS,53,617-630. |
MLA | Su, Chun-Yian,et al."Object-based precipitation system bias in grey zone simulation: the 2016 South China Sea summer monsoon onset".CLIMATE DYNAMICS 53(2019):617-630. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论