Results 31 to 40 of about 980,176 (374)

Two-Dimensional Structure of Flow Channels and Associated Upward Field-Aligned Currents: Model and Observations

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Flow bursts are a major component of transport within the plasma sheet and auroral oval (where they are referred to as flow channels), and lead to a variety of geomagnetic disturbances as they approach the inner plasma sheet (equatorward portion of the ...
Larry. R. Lyons   +5 more
doaj   +1 more source

A Stochastic Framework for Modeling the Population Dynamics of Convective Clouds

open access: yesJournal of Advances in Modeling Earth Systems, 2018
A stochastic prognostic framework for modeling the population dynamics of convective clouds and representing them in climate models is proposed. The framework follows the nonequilibrium statistical mechanical approach to constructing a master equation ...
Samson Hagos   +4 more
doaj   +1 more source

Convergence of adaptive mixed finite element method for convection-diffusion-reaction equations [PDF]

open access: yes, 2013
We prove the convergence of an adaptive mixed finite element method (AMFEM) for (nonsymmetric) convection-diffusion-reaction equations. The convergence result holds from the cases where convection or reaction is not present to convection-or reaction ...
Du, Shaohong, Xie, Xiaoping
core   +1 more source

Enhanced future changes in wet and dry extremes over Africa at convection-permitting scale

open access: yesNature Communications, 2019
African society is particularly vulnerable to climate change. The representation of convection in climate models has so far restricted our ability to accurately simulate African weather extremes, limiting climate change predictions.
E. Kendon   +6 more
semanticscholar   +1 more source

Multiple‐Instance Superparameterization: 1. Concept, and Predictability of Precipitation

open access: yesJournal of Advances in Modeling Earth Systems, 2019
We have investigated the predictability of precipitation using a new configuration of the superparameterized Community Atmosphere Model (SP‐CAM). The new configuration, called the multiple‐instance SP‐CAM, or MP‐CAM, uses the average heating and drying ...
Todd R. Jones   +2 more
doaj   +1 more source

Convective Turing patterns

open access: yesPhysical Review Letters, 1993
Turing patterns involve regions of different chemical compositions which lead to density gradients that, in liquids, are potentially unstable hydrodynamically. Nonlinear hydrodynamics coupled with a model of Turing pattern formation show that convection modifies and coexists with some Turing patterns and excludes others, and thereby plays a significant
Vasquez, D. A.   +2 more
openaire   +5 more sources

Multiple‐Instance Superparameterization: 2. The Effects of Stochastic Convection on the Simulated Climate

open access: yesJournal of Advances in Modeling Earth Systems, 2019
The cloud‐permitting model (CPM) of the superparameterized Community Atmosphere Model (SP‐CAM) is a stochastic parameterization. As reported in a companion paper, we have created a variant of SP‐CAM, called MP‐CAM, that uses the averaged feedback of 10 ...
Todd R. Jones   +2 more
doaj   +1 more source

The Effect of Internal and External Heating on the Free Convective Flow of a Bingham Fluid in a Vertical Porous Channel

open access: yesFluids, 2019
We study the steady free convective flow of a Bingham fluid in a porous channel where heat is supplied by both differential heating of the sidewalls and by means of a uniform internal heat generation.
D. Andrew S. Rees, Andrew P. Bassom
doaj   +1 more source

Coastal Tropical Convection in a Stochastic Modeling Framework

open access: yes, 2017
Recent research has suggested that the overall dependence of convection near coasts on large-scale atmospheric conditions is weaker than over the open ocean or inland areas. This is due to the fact that in coastal regions convection is often supported by
Ajayamohan   +69 more
core   +1 more source

Could Machine Learning Break the Convection Parameterization Deadlock?

open access: yesGeophysical Research Letters, 2018
Representing unresolved moist convection in coarse‐scale climate models remains one of the main bottlenecks of current climate simulations. Many of the biases present with parameterized convection are strongly reduced when convection is explicitly ...
P. Gentine   +4 more
semanticscholar   +1 more source

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