Results 31 to 40 of about 505 (141)

A review of the theoretical basis for bulk mass flux convective parameterization [PDF]

open access: yes, 2009
Most parameterizations for precipitating convection in use today are bulk schemes, in which an ensemble of cumulus elements with different properties is modelled as a single, representative entraining-detraining plume.
Plant, Robert Stephen
core   +1 more source

Uncertainties in future climate predictions due to convection parameterisations [PDF]

open access: yes, 2014
In the last decades several convection parameterisations have been developed to consider the impact of small-scale unresolved processes in Earth System Models associated with convective clouds.
H. Rybka, H. Tost
core   +1 more source

Understanding and representing atmospheric convection across scales: recommendations from the meeting held at Dartington Hall, Devon, UK, 28–30 January 2013 [PDF]

open access: yes, 2014
As weather and climate models move toward higher resolution, there is growing excitement about potential future improvements in the understanding and prediction of atmospheric convection and its interaction with larger-scale phenomena.
Arakawa   +21 more
core   +1 more source

A study of reduced numerical precision to make superparameterization more competitive using a hardware emulator in the OpenIFS model

open access: yesJournal of Advances in Modeling Earth Systems, 2017
The use of reduced numerical precision to reduce computing costs for the cloud resolving model of superparameterized simulations of the atmosphere is investigated. An approach to identify the optimal level of precision for many different model components
Peter D. Düben   +3 more
doaj   +1 more source

Two-dimensional Moist Stratified Turbulence and the Emergence of Vertically Sheared Horizontal Flows

open access: yes, 2011
Moist stratified turbulence is studied in a two-dimensional Boussinesq system influenced by condensation and evaporation. The problem is set in a periodic domain and employs simple evaporation and condensation schemes, wherein both the processes push ...
Majda, Andrew J.   +2 more
core   +1 more source

Simulation of the intraseasonal variability over the Eastern Pacific ITCZ in climate models [PDF]

open access: yes, 2012
During boreal summer, convective activity over the eastern Pacific (EPAC) inter-tropical convergence zone (ITCZ) exhibits vigorous intraseasonal variability (ISV). Previous observational studies identified two dominant ISV modes over the EPAC, i.e., a 40-
Jiang, Xianan   +11 more
core   +3 more sources

Cloud feedback mechanisms and their representation in global climate models [PDF]

open access: yes, 2017
Cloud feedback – the change in top-of-atmosphere radiative flux resulting from the cloud response to warming – constitutes by far the largest source of uncertainty in the climate response to CO2 forcing simulated by global climate models (GCMs).
Bretherton CS   +5 more
core   +4 more sources

High-resolution superparameterization of OpenIFS with DALES

open access: yes, 2019
Poster about superparameterization of clouds, convection and turbulence in the global atmospheric model OpenIFS, using DALES, a high-resolution, three-dimensional large-eddy simulation code.
Jansson, Fredrik   +6 more
openaire   +1 more source

Aerosol–cloud drop concentration closure for clouds sampled during the International Consortium for Atmospheric Research on Transport and Transformation 2004 campaign [PDF]

open access: yes, 2007
This study analyzes 27 cumuliform and stratiform clouds sampled aboard the CIRPAS Twin Otter during the 2004 International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) experiment.
Andreae   +66 more
core   +2 more sources

Eastward-Propagating Intraseasonal Oscillation Represented by Chikira-Sugiyama Cumulus Parameterization. Part I: Comparison with Observation and Reanalysis [PDF]

open access: yes, 2013
The eastward-propagating intraseasonal oscillation represented by the Chikira-Sugiyama cumulus parameterization in an atmospheric general circulation model is compared with observations and reanalyses.
CHIKIRA, Minoru   +3 more
core   +1 more source

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