Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028368 |
The Controlling Role of Boundary Layer Inertial Oscillations in Meiyu Frontal Precipitation and Its Diurnal Cycles Over China | |
Xue, Ming1,2; Luo, Xia1,2,3; Zhu, Kefeng1; Sun, Zhengqi1,2; Fei, Jianfang3 | |
2018-05-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:10页码:5090-5115 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Convection-permitting simulations are used to investigate the key mechanism of Meiyu precipitation diurnal cycle over China. Six days from the 2014 Meiyu season are used to produce a north composite rainband over the Yangtze-Huaihe River Basin and another 6days used to produce a south composite band. Both rainbands have peak rainfall in the early morning, while the south band has a secondary peak in the afternoon. Low-level ageostrophic winds (AGWs) are found to exhibit diurnal cycles with clockwise rotations and their directions, and magnitudes depend on the background geostrophic monsoon flows. Net moisture flux into a control volume enclosing each rainband is almost purely due to AGWs. For both rainbands, net flux reaches maximum at similar to 04 LST, about 3-4hr before morning precipitation peak. For the north band, a prominent minimum occurs at similar to 19 LST, 4hr before the precipitation minimum. The moisture fluxes through the southern control volume boundary make the largest contributions to the net flux and its diurnal variations. The diurnal variations of the AGWs and their relationship with the background monsoon flows agree very well with the prediction of Blackadar boundary layer inertial oscillation theory, and the convergence forcing by the AGWs resulting from the inertial oscillations plays a paramount role in modulating the diurnal cycles of Meiyu front precipitation, including the creation of early morning peak and evening minimum. Feedback of latent heat release plays only a secondary role. The commonly recognized diurnal monsoon variability can be explained by the Blackadar inertial oscillation theory. |
英文关键词 | Meiyu precipitation diurnal cycles inertial oscillations |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435445600019 |
WOS关键词 | WARM-SEASON PRECIPITATION ; LOW-LEVEL JETS ; ASIAN SUMMER MONSOON ; PART I ; NORTHERN TAIWAN ; HEAVY RAINFALL ; EAST-ASIA ; YU SEASON ; CONVECTION ; MODEL |
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/32165 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ, Sch Atmosphere Sci, Nanjing, Jiangsu, Peoples R China; 2.Univ Oklahoma, Ctr Anal & Predict Storms, Norman, OK 73019 USA; 3.Natl Univ Def Technol, Coll Meteorol & Oceanog, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Xue, Ming,Luo, Xia,Zhu, Kefeng,et al. The Controlling Role of Boundary Layer Inertial Oscillations in Meiyu Frontal Precipitation and Its Diurnal Cycles Over China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(10):5090-5115. |
APA | Xue, Ming,Luo, Xia,Zhu, Kefeng,Sun, Zhengqi,&Fei, Jianfang.(2018).The Controlling Role of Boundary Layer Inertial Oscillations in Meiyu Frontal Precipitation and Its Diurnal Cycles Over China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(10),5090-5115. |
MLA | Xue, Ming,et al."The Controlling Role of Boundary Layer Inertial Oscillations in Meiyu Frontal Precipitation and Its Diurnal Cycles Over China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.10(2018):5090-5115. |
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