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DOI | 10.1175/JAS-D-17-0090.1 |
Sphere-Filling Asymptotics of the Barotropic Potential Vorticity Staircase | |
Dunkerton, Timothy J. | |
2018-02-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2018 |
卷号 | 75期号:2页码:497-511 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | For barotropic flow in spherical geometry, the ideal potential vorticity staircase with flat steps and vertical risers exhibits a relationship between prograde jet strength and spacing such that, for regular spacing, the distance between adjacent jets is given by a suitably defined "Rhines scale'' multiplied by a positive constant equal to root 6 . This result was obtained previously by the author in the equatorial limit of spherical geometry and by others in periodic beta-plane geometry. An improved asymptotic method has been devised to explain the strength-spacing relationship in sphere-filling solutions. This analysis explains the approximate validity of the equatorial asymptotics and yields new insight on minimum energy states and staircase mode transitions simulated in the presence of random, persistent energy inputs at high horizontal wavenumber. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425753300007 |
WOS关键词 | JETS ; ATMOSPHERE ; DYNAMICS ; WAVES ; 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/29700 |
专题 | 地球科学 |
作者单位 | NorthWest Res Associates, Bellevue, WA 98009 USA |
推荐引用方式 GB/T 7714 | Dunkerton, Timothy J.. Sphere-Filling Asymptotics of the Barotropic Potential Vorticity Staircase[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2018,75(2):497-511. |
APA | Dunkerton, Timothy J..(2018).Sphere-Filling Asymptotics of the Barotropic Potential Vorticity Staircase.JOURNAL OF THE ATMOSPHERIC SCIENCES,75(2),497-511. |
MLA | Dunkerton, Timothy J.."Sphere-Filling Asymptotics of the Barotropic Potential Vorticity Staircase".JOURNAL OF THE ATMOSPHERIC SCIENCES 75.2(2018):497-511. |
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