Motion and structure of atmospheric mesoscale baroclinic vortices: dry air and weak environmental shear
Motion and structure of atmospheric mesoscale baroclinic vortices: dry air and weak environmental shear
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大气中尺度斜压涡旋的运动和结构:干燥空气和弱环境切变
DOI:
10.1017/jfm.2012.144
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发表时间:
2012
影响因子:
3.7
通讯作者:
Owinoh
中科院分区:
文献类型:
--
作者:
Päschke;Marschalik;Owinoh
A strongly tilted, nearly axisymmetric vortex in dry air with asymmetric diabatic heating is analysed here by matched asymptotic expansions. The vortex is in gradient wind balance, with vortex Rossby numbers of order unity, and embedded in a quasi-geostrophic (QG) background wind with weak vertical shear. With wind speeds of , such vortices correspond to tropical storms or nascent hurricanes according to the Saffir–Simpson scale. For asymmetric heating, nonlinear coupling of the evolution equations for the vortex tilt, its core structure, and its influence on the QG background is found. The theory compares well with the established linear theory of precessing quasi-modes of atmospheric vortices, and it corroborates the relationship between vortex tilt and asymmetric potential temperature and vertical velocity patterns as found by Jones (Q. J. R. Meteorol. Soc., vol. 121, 1995, pp. 821–851) and Frank & Ritchie (Mon. Weath. Rev., vol. 127, 1999, pp. 2044–2061) in simulations of adiabatic tropical cyclones. A relation between the present theory and the local induction approximation for three-dimensional slender vortex filaments is established.
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DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
R. Klein
通讯作者:
R. Klein
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
V. Wirth;T. Dunkerton
通讯作者:
T. Dunkerton
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
L. Ting;R. Klein;O. Knio
通讯作者:
O. Knio
影响因子:
3.7
作者:
G. M. Reznik;R. Grimshaw
通讯作者:
R. Grimshaw
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
E. Mikusky
通讯作者:
E. Mikusky