Results 11 to 20 of about 114,846 (301)

To Exascale and Beyond—The Simple Cloud‐Resolving E3SM Atmosphere Model (SCREAM), a Performance Portable Global Atmosphere Model for Cloud‐Resolving Scales

Journal of Advances in Modeling Earth Systems
The new generation of heterogeneous CPU/GPU computer systems offer much greater computational performance but are not yet widely used for climate modeling. One reason for this is that traditional climate models were written before GPUs were available and
A. S. Donahue, P. M. Caldwell, L. Bertagna, H. Beydoun, P. A. Bogenschutz, A. M. Bradley, T. C. Clevenger, J. Foucar, C. Golaz, O. Guba, W. Hannah, B. R. Hillman, J. N. Johnson, N. Keen, W. Lin, B. Singh, S. Sreepathi, M. A. Taylor, J. Tian, C. R. Terai, P. A. Ullrich, X. Yuan, Y. Zhang   +22 more
doaj   +2 more sources

Dependence of Convective Cloud Properties and Their Transport on Cloud Fraction and GCM Resolution Diagnosed from a Cloud-Resolving Model Simulation

Journal of Marine Science and Engineering, 2022
The scale-aware convective parameterization for high resolution global climate models must satisfy the requirement that the parameterized subgrid convective transport diminishes as the model resolution increases to convection-resolving resolutions.
Zhanjie Zhang, Guang J. Zhang
doaj   +1 more source

A Physically Based Definition of Convectively Generated Density Currents: Detection and Characterization in Convection‐Permitting Simulations

Journal of Advances in Modeling Earth Systems, 2021
In this study, a conceptual model to define convective density currents is proposed. Based on theory, observations and modeling studies, we define convective density currents as 3D coherent structures with an anomalously cold core, an adjacent wind gust,
Nicolas Rochetin, Cathy Hohenegger, Ludovic Touzé‐Peiffer, Najda Villefranque   +3 more
doaj   +1 more source

The Cloud-resolving model Radar SIMulator (CR-SIM) Version 3.3: description and applications of a virtual observatory [PDF]

Geoscientific Model Development, 2020
Ground-based observatories use multisensor observations to characterize cloud and precipitation properties. One of the challenges is how to design strategies to best use these observations to understand these properties and evaluate weather and climate ...
M. Oue, A. Tatarevic, P. Kollias, P. Kollias, D. Wang, K. Yu, A. M. Vogelmann   +6 more
doaj   +1 more source

Tropical variability simulated in ICON-A with a spectral cumulus parameterization [PDF]

, 2020
We implemented a spectral cumulus parameterization based on a cloud-resolving model (SC scheme) in the icosahedral nonhydrostatic atmospheric model (ICON-A).
Baba, Y., Giorgetta, M.
core   +2 more sources

A deep learning framework for analyzing cloud characteristics of aggregated convection using cloud‐resolving model simulations

Atmospheric Science Letters, 2023
This study introduces a framework to extract the high‐dimensional nonlinear relationships among state variables for aggregated convection. The prototype of such a framework is developed that applies the convolutional neural network models (CNN models) to
Yi‐Chang Chen, Chien‐Ming Wu, Wei‐Ting Chen   +2 more
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Modeling springtime shallow frontal clouds with cloud‐resolving and single‐column models [PDF]

Journal of Geophysical Research: Atmospheres, 2005
This modeling study compares the performance of eight single‐column models (SCMs) and four cloud‐resolving models (CRMs) in simulating shallow frontal cloud systems observed during a short period of the March 2000 Atmospheric Radiation Measurement (ARM) intensive operational period. Except for the passage of a cold front at the beginning of this period,
Kuan‐Man Xu, Minghua Zhang, Zachary A. Eitzen, Steven J. Ghan, Stephen A. Klein, Xiaoqing Wu, Shaocheng Xie, Mark Branson, Anthony D. Del Genio, Sam F. Iacobellis, Marat Khairoutdinov, Wuyin Lin, Ulrike Lohmann, David A. Randall, Richard C. J. Somerville, Yogesh C. Sud, Gregory K. Walker, Audrey Wolf, J. John Yio, Junhua Zhang   +19 more
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Overlap properties of clouds generated by a cloud‐resolving model [PDF]

Journal of Geophysical Research: Atmospheres, 2003
The overlap properties of ∼850 snapshots of convective cloud fields generated by a cloud‐resolving model are studied and compared with previously published results based on cloud radar observations. Total cloud cover is overestimated by the random overlap assumption but underestimated by the maximum overlap assumption and two standard implementations ...
L. Oreopoulos, M. Khairoutdinov
openaire   +1 more source

Entrapment: an important mechanism to explain the shortwave 3D radiative effect of clouds [PDF]

, 2019
Several mechanisms have previously been proposed to explain differences between the shortwave reflectance of realistic cloud scenes computed using the 1D independent column approximation (ICA) and 3D solutions of the radiative transfer equation. When the
Barker, Howard W., Fielding, Mark D., Hogan, Robin J., Schäfer, Sophia A. K., Villefranque, Najda   +4 more
core   +2 more sources

Comparison of the simulated outcomes of aerosol–cloud interaction by a meteorological model with and without an interactive chemistry module

Scientific Reports, 2023
With the general rise of computational capacities and the continued efforts to improve computational efficiencies, more and more studies have been utilizing state-of-the-art atmospheric models that enable cloud-resolving simulations over a global domain.
Azusa Takeishi, Chien Wang
doaj   +1 more source