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DOI | 10.1007/s00382-016-3172-x |
Evaluation of precipitation over an oceanic region of Japan in convection-permitting regional climate model simulations | |
Murata, Akihiko; Sasaki, Hidetaka; Kawase, Hiroaki; Nosaka, Masaya | |
2017-03-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 48 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | We investigated the performance of a convection-permitting regional climate model with respect to precipitation in the present climate around the southwestern oceanic region of Japan. The effects of explicit representation of convective processes without cumulus parameterization can be properly estimated by using a model domain without complex topography or convoluted coastlines. The amounts of annual and monthly precipitation and the frequencies of daily and hourly precipitation were well reproduced by the convection-permitting model with a 2-km grid spacing, and its performance was better than that of a model with a coarser mesh. In particular, the frequencies of hourly precipitation in the convection-permitting simulation matched the observed frequencies for precipitation intensities below 20 mm h(-1). Above intensities of 20 mm h(-1), however, the convection-permitting model tended to overestimate the frequency of hourly precipitation. To explore the mechanism of this overestimation of heavy hourly precipitation, the sensitivity of the frequency distribution of precipitation to the horizontal resolution was tested by changing the horizontal grid spacing of the model from 2 to 4 km and then 1.5 km. The results showed that the overestimation was increased when the horizontal resolution was coarser, owing to spurious grid-scale precipitation, which causes heavy precipitation to be highly concentrated in a single grid. This spurious grid-scale precipitation may be caused by insufficient representation of convective downdrafts in convection-permitting simulations by models with coarser resolutions. |
英文关键词 | Convection-permitting model Regional climate model Heavy precipitation Japan Horizontal resolution |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395060900022 |
WOS关键词 | CUMULUS PARAMETERIZATION ; GLOBAL PRECIPITATION ; ATMOSPHERIC MODELS ; GAUGE OBSERVATIONS ; MOIST CONVECTION ; COMPLEX TERRAIN ; MESOSCALE MODEL ; SNOW CLOUD ; VERIFICATION ; UNCERTAINTY |
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/35981 |
专题 | 气候变化 |
作者单位 | Meteorol Res Inst, 1-1 Nagamine, Tsukuba, Ibaraki 3050052, Japan |
推荐引用方式 GB/T 7714 | Murata, Akihiko,Sasaki, Hidetaka,Kawase, Hiroaki,et al. Evaluation of precipitation over an oceanic region of Japan in convection-permitting regional climate model simulations[J]. CLIMATE DYNAMICS,2017,48. |
APA | Murata, Akihiko,Sasaki, Hidetaka,Kawase, Hiroaki,&Nosaka, Masaya.(2017).Evaluation of precipitation over an oceanic region of Japan in convection-permitting regional climate model simulations.CLIMATE DYNAMICS,48. |
MLA | Murata, Akihiko,et al."Evaluation of precipitation over an oceanic region of Japan in convection-permitting regional climate model simulations".CLIMATE DYNAMICS 48(2017). |
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