Results 11 to 20 of about 505 (141)

A framework for variational data assimilation with superparameterization [PDF]

Nonlinear Processes in Geophysics, 2015
Superparameterization (SP) is a multiscale computational approach wherein a large scale atmosphere or ocean model is coupled to an array of simulations of small scale dynamics on periodic domains embedded into the computational grid of the large scale ...
I. Grooms, Y. Lee
doaj   +5 more sources

Global Microphysical Sensitivity of Superparameterized Precipitation Extremes

Earth and Space Science, 2021
A recent study found statistically significant differences in extreme precipitation distributions over the contiguous United States (CONUS) when changing the microphysics scheme in a superparameterized global climate model.
Alexander B. Charn, William D. Collins, Hossein Parishani, Mark D. Risser   +3 more
doaj   +4 more sources

Stochastic superparameterization in quasigeostrophic turbulence [PDF]

Journal of Computational Physics, 2013
In this article we expand and develop the authors' recent proposed methodology for efficient stochastic superparameterization (SP) algorithms for geophysical turbulence.
Grooms, Ian, Majda, Andrew J
core   +3 more sources

Multiscale Modeling Framework Using Element‐Based Galerkin Methods for Moist Atmospheric Limited‐Area Simulations

Journal of Advances in Modeling Earth Systems
This paper presents a multiscale modeling framework (MMF) to model moist atmospheric limited‐area weather. The MMF resolves large‐scale convection using a coarse grid while simultaneously resolving local features through numerous fine local grids and ...
Soonpil Kang, James F. Kelly, Anthony P. Austin, Francis X. Giraldo   +3 more
doaj   +2 more sources

Mesoscale Convective Systems in a Superparameterized E3SM Simulation at High Resolution [PDF]

Journal of Advances in Modeling Earth Systems, 2022
Accurately representing mesoscale convective systems (MCSs) is crucial to simulating the energy and water cycles in global climate models. Using a novel MCS identification and tracking algorithm applied to observations and model simulations, we evaluate ...
Guangxing Lin, Christopher R. Jones, L. Ruby Leung, Zhe Feng, Mikhail Ovchinnikov   +4 more
doaj   +2 more sources

On the Dependence of Simulated Convection on Domain Size in CRMs

Journal of Advances in Modeling Earth Systems
We present a heuristic model to explain the suppression of deep convection in convection‐resolving models (CRMs) with a small number of grid columns, such as those used in super‐parameterized or multi‐scale modeling framework (MMF) general circulation ...
A. M. Jenney, Z. Hu, W. M. Hannah
doaj   +2 more sources

A Community Atmosphere Model With Superparameterized Clouds [PDF]

Eos, Transactions American Geophysical Union, 2013
Simulations by climate models are used to project the climate change expected as atmospheric greenhouse gas concentrations rise. How much will the Earth warm? Will south Asia experience stronger monsoons in the future? Will the American Southwest continue to desiccate? How soon will the Arctic become ice free? How fast and how much will sea level rise?
David Randall, Mark Branson, Minghuai Wang, Steven Ghan, Cheryl Craig, Andrew Gettelman, James Edwards   +6 more
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Towards multiscale modeling of ocean surface turbulent mixing using coupled MPAS-Ocean v6.3 and PALM v5.0 [PDF]

Geoscientific Model Development, 2021
A multiscale modeling approach for studying the ocean surface turbulent mixing is explored by coupling an ocean general circulation model (GCM) MPAS-Ocean with the Parallelized Large Eddy Simulation Model (PALM).
Q. Li, L. Van Roekel
doaj   +1 more source

Potential Predictability of the Madden‐Julian Oscillation in a Superparameterized Model

Geophysical Research Letters, 2023
The Madden‐Julian Oscillation (MJO) is a promising target for improving sub‐seasonal weather forecasts. Current forecast models struggle to simulate the MJO due to imperfect convective parameterizations and mean state biases, degrading their forecast ...
Sarah Weidman, Zhiming Kuang
doaj   +1 more source

Load‐Balancing Intense Physics Calculations to Embed Regionalized High‐Resolution Cloud Resolving Models in the E3SM and CESM Climate Models

Journal of Advances in Modeling Earth Systems, 2022
We design a new strategy to load‐balance high‐intensity sub‐grid atmospheric physics calculations restricted to a small fraction of a global climate simulation's domain.
Liran Peng, Michael Pritchard, Walter M. Hannah, Peter N. Blossey, Patrick H. Worley, Christopher S. Bretherton   +5 more
doaj   +1 more source