The non‐conservation of potential vorticity by a dynamical core compared with the effects of parametrized physical processes
The non‐conservation of potential vorticity by a dynamical core compared with the effects of parametrized physical processes
复制标题
与参数化物理过程的影响相比,动力核心的位涡不守恒
DOI:
10.1002/qj.2729
复制
发表时间:
2016
影响因子:
8.9
通讯作者:
S. Gray
中科院分区:
文献类型:
--
作者:
L. Saffin;J. Methven;S. Gray
Numerical models of the atmosphere combine a dynamical core, which approximates solutions to the adiabatic, frictionless governing equations for fluid dynamics, with tendencies arising from the parametrization of other physical processes. Since potential vorticity (PV) is conserved following fluid flow in adiabatic, frictionless circumstances, it is possible to isolate the effects of non‐conservative processes by accumulating PV changes in an air‐mass‐relative framework. This ‘PV tracer technique’ is used to accumulate separately the effects on PV of each of the different non‐conservative processes represented in a numerical model of the atmosphere. Dynamical cores are not exactly conservative because they introduce, explicitly or implicitly, some level of dissipation and adjustment of prognostic model variables which acts to modify PV. Here, the PV tracers technique is extended to diagnose the cumulative effect of the non‐conservation of PV by a dynamical core and its characteristics relative to the PV modification by parametrized physical processes.
登录
查看更多内容
影响因子:
3.2
作者:
Chagnon J
通讯作者:
Chagnon J
影响因子:
8.9
作者:
J. Chagnon;S. Gray;J. Methven
通讯作者:
J. Chagnon;S. Gray;J. Methven
影响因子:
3.2
作者:
C. Dearden;P. Connolly;G. Lloyd;J. Crosier;K. Bower;T. Choularton;G. Vaughan
通讯作者:
C. Dearden;P. Connolly;G. Lloyd;J. Crosier;K. Bower;T. Choularton;G. Vaughan
影响因子:
5.2
作者:
Gray S
通讯作者:
Gray S
影响因子:
8
作者:
Vaughan G
通讯作者:
Vaughan G