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DOI | 10.1002/2017JD026696 |
Effects of Parameterized Orographic Drag on Weather Forecasting and Simulated Climatology Over East Asia During Boreal Summer | |
Choi, Hyun-Joo; Choi, Suk-Jin; Koo, Myung-Seo; Kim, Jung-Eun; Kwon, Young Cheol; Hong, Song-You | |
2017-10-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | The impact of subgrid orographic drag on weather forecasting and simulated climatology over East Asia in boreal summer is examined using two parameterization schemes in a global forecast model. The schemes consider gravity wave drag (GWD) with and without lower-level wave breaking drag (LLWD) and flow-blocking drag (FBD). Simulation results from sensitivity experiments verify that the scheme with LLWD and FBD improves the intensity of a summertime continental high over the northern part of the Korean Peninsula, which is exaggerated with GWD only. This is because the enhanced lower tropospheric drag due to the effects of lower-level wave breaking and flow blocking slows down the wind flowing out of the high-pressure system in the lower troposphere. It is found that the decreased lower-level divergence induces a compensating weakening of middle-to upper-level convergence aloft. Extended experiments for medium-range forecasts for July 2013 and seasonal simulations for June to August of 2013-2015 are also conducted. Statistical skill scores for medium-range forecasting are improved not only in low-level winds but also in surface pressure when both LLWD and FBD are considered. A simulated climatology of summertime monsoon circulation in East Asia is also realistically reproduced. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417195200007 |
WOS关键词 | GRAVITY-WAVE DRAG ; GENERAL-CIRCULATION ; PARAMETRIZATION ; MODEL ; SCHEME ; SYSTEM ; BLOCKING ; FLOW |
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/33039 |
专题 | 气候变化 |
作者单位 | Korea Inst Atmospher Predict Syst, Seoul, South Korea |
推荐引用方式 GB/T 7714 | Choi, Hyun-Joo,Choi, Suk-Jin,Koo, Myung-Seo,et al. Effects of Parameterized Orographic Drag on Weather Forecasting and Simulated Climatology Over East Asia During Boreal Summer[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(20). |
APA | Choi, Hyun-Joo,Choi, Suk-Jin,Koo, Myung-Seo,Kim, Jung-Eun,Kwon, Young Cheol,&Hong, Song-You.(2017).Effects of Parameterized Orographic Drag on Weather Forecasting and Simulated Climatology Over East Asia During Boreal Summer.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(20). |
MLA | Choi, Hyun-Joo,et al."Effects of Parameterized Orographic Drag on Weather Forecasting and Simulated Climatology Over East Asia During Boreal Summer".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.20(2017). |
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