An improved moist‐convective rotating shallow‐water model and its application to instabilities of hurricane‐like vortices

@article{Rostami2018AnIM,
  title={An improved moist‐convective rotating shallow‐water model and its application to instabilities of hurricane‐like vortices},
  author={Masoud A. Rostami and Vladimir Zeitlin},
  journal={Quarterly Journal of the Royal Meteorological Society},
  year={2018},
  volume={144},
  pages={1450 - 1462}
}
  • M. Rostami, V. Zeitlin
  • Published 1 July 2018
  • Environmental Science, Physics
  • Quarterly Journal of the Royal Meteorological Society
We show how the two‐layer moist‐convective rotating shallow‐water model (mcRSW), which proved to be a simple and robust tool for studying effects of moist convection for large‐scale atmospheric motions, can be improved. The improvement is achieved by including, in addition to the water vapour, precipitable water, and the effects of vaporization, entrainment, and precipitation, rendering the model cloud‐resolving. It is applied, as an illustration, to model the development of instabilities of… 
View on Wiley
hal.sorbonne-universite.fr
18 Citations
Background Citations
8
Methods Citations
4

18 Citations

Citation Type

Citation Type

Moist-convective thermal rotating shallow water model
We show how the moist-convective rotating shallow water model, where the moist convection and the related latent heat release are incorporated into the standard rotating shallow water model of the…
Can geostrophic adjustment of baroclinic disturbances in the tropical atmosphere explain MJO events?
  • M. Rostami, V. Zeitlin
  • Environmental Science
    Quarterly Journal of the Royal Meteorological Society
  • 2020
Using the two‐layer moist‐convective rotating shallow‐water model, we study the process of relaxation (adjustment) of localized large‐scale pressure anomalies in the lower equatorial troposphere, and…
Equatorial modons in dry and moist-convective shallow-water systems on a rotating sphere
Abstract The adjustment of equatorial pressure anomalies is studied using high-resolution numerical simulations within one- and two-layer shallow-water systems on a rotating sphere, which include a…
Eastward-moving convection-enhanced modons in shallow water in the equatorial tangent plane
  • M. Rostami
  • Environmental Science, Physics
    Physics of Fluids
  • 2019
We report a discovery of steady long-living slowly eastward moving large-scale coherent twin cyclones, the equatorial modons, in the shallow water model in the equatorial beta-plane, the archetype…
Moist shallow‐water response to tropical forcing: Initial‐value problems
  • D. Suhas, J. Sukhatme
  • Environmental Science, Physics
    Quarterly Journal of the Royal Meteorological Society
  • 2020
The response of a spherical moist shallow‐water system to tropical imbalances in the presence of inhomogeneous saturation fields is examined. While the initial moist response is similar to the dry…
Instabilities of low-latitude easterly jets in the presence of moist convection and topography and related cyclogenesis, in a simple atmospheric model
A simple two-layer model, the moist-convective rotating shallow water, which allows for low-cost high-resolution numerical simulations of the dynamics of the moist atmosphere in the presence of…
Eastward-moving equatorial modons in moist-convective shallow-water models
It is shown that steady large-scale slowly eastward-moving twin-cyclone coherent structures, the equatorial modons, exist in both one- and two layer versions of the rotating shallow water model on…
Evolution, propagation and interactions with topography of hurricane-like vortices in a moist-convective rotating shallow-water model
Abstract The so-called moist-convective shallow-water model, which incorporates moist convection in a simple albeit self-consistent way is used to analyse how intense localized vortices, with…
Distinct intensification pathways for a shallow-water vortex subjected to asymmetric “diabatic” forcing
Convective organization and eastward propagating equatorial disturbances in a simple excitable system
  • G. Vallis, J. Penn
  • Physics, Environmental Science
    Quarterly Journal of the Royal Meteorological Society
  • 2020
We describe and illustrate a mechanism whereby convective aggregation and eastward propagating equatorial disturbances, which are similar in some respects to the Madden–Julian Oscillation (MJO),…
...
...

References

SHOWING 1-10 OF 47 REFERENCES
Understanding Instabilities of Tropical Cyclones and Their Evolution with a Moist Convective Rotating Shallow-Water Model
AbstractInstabilities of hurricane-like vortices are studied with the help of a rotating shallow-water model, including the effects of moist convection. Linear stability analysis demonstrates that…
Simplified two-layer models of precipitating atmosphere and their properties
We derive a two-layer rotating shallow-water model for a moist atmosphere with water vapor condensation and related diabatic heating. Moist convection is represented by additional mass exchanges…
Fronts and nonlinear waves in a simplified shallow-water model of the atmosphere with moisture and convection
We describe a shallow-water type atmospheric model which includes the transport of moisture as well as related precipitation and convection effects. The model combines hydrodynamic nonlinearity of…
Moist versus Dry Baroclinic Instability in a Simplified Two-Layer Atmospheric Model with Condensation and Latent Heat Release
AbstractThe authors undertake a detailed analysis of the influence of water vapor condensation and latent heat release upon the evolution of the baroclinic instability. The framework consists in a…
Evaluation of the impact of moist convection on the development of asymmetric inner core instabilities in simulated tropical cyclones
This paper examines the nature and consequences of inner core instabilities in several intense tropical cyclones (TCs) simulated with a cloud‐resolving numerical model. The initial wave growth…
Hurricane Eyewall Evolution in a Forced Shallow Water Model
A forced shallow-water model is used to understand the role of diabatic and frictional effects in the generation, maintenance, and breakdown of the hurricane eyewall potential vorticity (PV) ring.…
Influence of condensation and latent heat release upon barotropic and baroclinic instabilities of vortices in a rotating shallow water f-plane model
Analysis of the influence of condensation and related latent heat release upon developing barotropic and baroclinic instabilities of large-scale low Rossby-number shielded vortices on the f-plane is…
Hurricane formation in diabatic Ekman turbulence
This article investigates the emergence of hurricanes from chaotic swirling motions in a three‐layer model of the tropical troposphere that includes basic parametrizations of cumulus convection and…
Predictability in Wet and Dry Convective Turbulence
Abstract There is a growing interest in understanding the role that moisture plays in atmospheric dynamics, particularly in its effect on predictability. Current research indicates that when moisture…
Numerical Simulation of the Life Cycle of Tropical Cyclones
Abstract The tropical cyclone is a solitary creature of the tropical oceans accompanied by violent rotating winds and torrential rain. Observational studies and diagnostic analyses leave little doubt…
...
...