Results 11 to 20 of about 29,399 (298)
Atmosphere, 2018 A commonly noted problem in the simulation of warm season convection in the North American monsoon region has been the inability of atmospheric models at the meso-β scales (10 s to 100 s of kilometers) to simulate organized convection, principally ...
Thang M. Luong +4 more
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Parameterizations for convective transport in various cloud-topped boundary layers [PDF]
Atmospheric Chemistry and Physics, 2015 We investigate the representation of convective transport of atmospheric compounds by boundary layer clouds. We focus on three key parameterizations that, when combined, express this transport: the area fraction of transporting clouds, the upward
M. Sikma, H. G. Ouwersloot
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Simulating model uncertainty of subgrid-scale processes by sampling model errors at convective scales [PDF]
, 2020 Ideally, perturbation schemes in ensemble forecasts should be based on the statistical properties of the model errors. Often, however, the statistical properties of these model errors are unknown. In practice, the perturbations are pragmatically modelled
Degrauwe, Daan +3 more
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Basic Theory Behind Parameterizing Atmospheric Convection [PDF]
Eos, Transactions American Geophysical Union, 2014 Last fall, a network of the European Cooperation in Science and Technology (COST), called “Basic Concepts for Convection Parameterization in Weather Forecast and Climate Models” (COST Action ES0905; see http://w3.cost.esf.org/index.php?id=205&action_number=ES0905), organized a 10‐day training course on atmospheric convection and its ...
R. S. Plant, Z. Fuchs, J. I. Yano
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Parameterization of Subgrid Deep Convective Cloud at Gray-Zone Resolutions: Preliminary Results
Tropical Cyclone Research and Review, 2014 : When the horizontal grid size of a numerical weather prediction (NWP) model is between a few hundred meters and ~10 km, referred to as the gray zone, updrafts in convective clouds cannot be fully resolved explicitly and the use of a subgrid convective ...
Wei Huang, Jian-Wen Bao, Baode Chen
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Stratosphere-troposphere transport in a numerical simulation of midlatitude convection [PDF]
, 2007 The transport of stratospheric air deep into the troposphere via convection is investigated numerically using the UK Met Office Unified Model. A convective system that formed on 27 June 2004 near southeast England, in the vicinity an upper level ...
Bryan +24 more
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Journal of Advances in Modeling Earth Systems, 2021 Understanding the coupling between convective clouds and the general circulation, as well as addressing the gray zone problem in convective parameterization, requires insight into the genesis and maintenance of spatial patterns in cumulus cloud ...
Roel A. J. Neggers, Philipp J. Griewank
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A review of the theoretical basis for bulk mass flux convective parameterization [PDF]
, 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
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Parameterizing convective organization
Journal of Advances in Modeling Earth Systems, 2011 Lateral mixing parameters in buoyancy-driven deep convection schemes are among the most sensitive and important unknowns in atmosphere models. Unfortunately, there is not a true optimum value for plume mixing rate, but rather a dilemma or tradeoff: Excessive dilution of updrafts leads to unstable stratification bias in the mean state, while inadequate ...
Brian Earle Mapes, Richard Brian Neale
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Assessing Memory in Convection Schemes Using Idealized Tests
Journal of Advances in Modeling Earth Systems, 2023 Two assumptions commonly applied in convection schemes—the diagnostic and quasi‐equilibrium assumptions—imply that convective activity (e.g., convective precipitation) is controlled only by the large‐scale (macrostate) environment at the time.
Y.‐L. Hwong +4 more
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