Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-17-0172.1 |
The Potential Role of Atmospheric Bores and Gravity Waves in the Initiation and Maintenance of Nocturnal Convection over the Southern Great Plains | |
Parsons, David B.1; Haghi, Kevin R.1; Halbert, Kelton T.1; Elmer, Blake1; Wang, Junhong2 | |
2019 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:1页码:43-68 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This investigation explores the relationship among bores, gravity waves, and convection within the nocturnal environment through the utilization of measurements taken during the International H2O Project (IHOP_2002) over the Southern Great Plains. The most favorable conditions for deep convection were found to occur within the boundary layer during the late afternoon and early evening hours in association with the diurnal cycle of solar insolation. At night, the layers most favorable for deep convection occur at and above the height of the nocturnal southerly low-level jet in association with distinct maxima in both the southerly and westerly components of the wind. Observations taken during the passage of 13 nocturnal wave disturbances over a comprehensive profiling site show the average maximum and net upward displacements with these waves were estimated to be similar to similar to 900 and similar to 660 m, respectively. The lifting was not limited to the stable boundary layer, but reached into the conditionally unstable layers aloft. Since the net upward displacements persisted for many hours as the disturbances propagated away from the convection, areas well in excess of 10 000 km(2) are likely impacted by this ascent. This lifting can directly maintain existing convection and aid in the initiation of new convection by reducing the convective inhibition in the vicinity of the active convection. In agreement with past studies, strong ascent in the lowest similar to 1.5 km was generally consistent with the passage of a bore. However, separate wave responses also occurred well above the bores, and low-frequency gravity waves may explain such disturbances. |
英文关键词 | North America Convection Gravity waves Mesoscale processes Density currents Diurnal effects |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000453535800001 |
WOS关键词 | INTERNATIONAL H2O PROJECT ; WARM-SEASON PRECIPITATION ; SQUALL-LINE ; DIURNAL-VARIATIONS ; FRONTAL SURFACES ; SOLITARY WAVE ; DOPPLER RADAR ; POSITIVE CAPE ; UNDULAR BORE ; PART I |
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/29355 |
专题 | 地球科学 |
作者单位 | 1.Univ Oklahoma, Sch Meteorol, Norman, OK 73019 USA; 2.SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 USA |
推荐引用方式 GB/T 7714 | Parsons, David B.,Haghi, Kevin R.,Halbert, Kelton T.,et al. The Potential Role of Atmospheric Bores and Gravity Waves in the Initiation and Maintenance of Nocturnal Convection over the Southern Great Plains[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(1):43-68. |
APA | Parsons, David B.,Haghi, Kevin R.,Halbert, Kelton T.,Elmer, Blake,&Wang, Junhong.(2019).The Potential Role of Atmospheric Bores and Gravity Waves in the Initiation and Maintenance of Nocturnal Convection over the Southern Great Plains.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(1),43-68. |
MLA | Parsons, David B.,et al."The Potential Role of Atmospheric Bores and Gravity Waves in the Initiation and Maintenance of Nocturnal Convection over the Southern Great Plains".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.1(2019):43-68. |
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