An Idealized Physical Model for the Severe Convective Storm Environmental Sounding
An Idealized Physical Model for the Severe Convective Storm Environmental Sounding
复制标题
强对流风暴环境探测的理想物理模型
DOI:
10.1175/jas-d-20-0120.1
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发表时间:
2021
影响因子:
3.1
通讯作者:
Dawson II, Daniel T.
中科院分区:
文献类型:
--
作者:
Chavas, Daniel R.;Dawson II, Daniel T.
This work develops a theoretical model for steady thermodynamic and kinematic profiles for severe convective storm environments, building off the two-layer static energy framework developed in work by Agard and Emanuel. The model is phrased in terms of static energy, and it allows for independent variation of the boundary layer and free troposphere separated by a capping inversion. An algorithm is presented to apply the model to generate a sounding for numerical simulations of severe convective storms, and the model is compared and contrasted with that of Weisman and Klemp. The model is then fit to a case-study sounding associated with the 3 May 1999 tornado outbreak, and its potential utility is demonstrated via idealized numerical simulation experiments. A long-lived supercell is successfully simulated with the historical sounding but not the analogous theoretical sounding. Two types of example experiments are then performed that do simulate a long-lived supercell: 1) a semitheoretical experiment in which a portion of the theoretical sounding is modified to match the real sounding (low-level moisture); 2) a fully theoretical experiment in which a model physical parameter is modified (free-tropospheric relative humidity). Overall, the construction of this minimal model is flexible and amenable to additional modifications as needed. The model offers a novel framework that may be useful for testing how severe convective storms depend on the vertical structure of the hydrostatic environment, as well as for linking variability in these environments to the physical processes that produce them within the climate system.
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影响因子:
3.1
作者:
Johannes M. L. Dahl;M. Parker;Louis J. Wicker
通讯作者:
Johannes M. L. Dahl;M. Parker;Louis J. Wicker
DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
F. Huthoff;Denie C. M. Augustijn
通讯作者:
Denie C. M. Augustijn
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Johannes M. L. Dahl
通讯作者:
Johannes M. L. Dahl
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
J. Naylor;M. Gilmore
通讯作者:
M. Gilmore
影响因子:
3.2
作者:
R. Warren;H. Richter;H. Ramsay;S. Siems;M. Manton
通讯作者:
M. Manton