Results 21 to 30 of about 12,649 (264)

North Atlantic deep water formation and AMOC in CMIP5 models [PDF]

open access: yesOcean Science, 2017
Deep water formation in climate models is indicative of their ability to simulate future ocean circulation, carbon and heat uptake, and sea level rise.
C. Heuzé
doaj   +1 more source

Global climate impacts of stochastic deep convection parameterization in the NCAR CAM5

open access: yesJournal of Advances in Modeling Earth Systems, 2016
In this study, the stochastic deep convection parameterization of Plant and Craig (PC) is implemented in the Community Atmospheric Model version 5 (CAM5) to incorporate the stochastic processes of convection into the Zhang‐McFarlane (ZM) deterministic ...
Yong Wang, Guang J. Zhang
doaj   +1 more source

Optimization and Evaluation of Stochastic Unified Convection Using Single‐Column Model Simulations at Multiple Observation Sites

open access: yesJournal of Advances in Modeling Earth Systems, 2023
We extend the previously developed stochastic unified convection scheme (UNICON) for shallow convection to deep convection by parameterizing the impact of mesoscale organized flow on updraft properties.
Jihoon Shin, Jong‐Jin Baik
doaj   +1 more source

Empirical evidence for deep convection being a major source of stratospheric ice clouds over North America [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Ice clouds in the lowermost stratosphere affect stratospheric water vapour and the Earth's radiation budget. The knowledge of its occurrence and driving forces is limited.
L. Zou   +5 more
doaj   +1 more source

Deep Convective Organization, Moisture Vertical Structure, and Convective Transition Using Deep-Inflow Mixing [PDF]

open access: yesJournal of the Atmospheric Sciences, 2019
Abstract It is an open question whether an integrated measure of buoyancy can yield a strong relation to precipitation across tropical land and ocean, across the seasonal and diurnal cycles, and for varying degrees of convective organization.
J. David Neelin, Kathleen A. Schiro
openaire   +1 more source

Why did deep convection persist over four consecutive winters (2015–2018) southeast of Cape Farewell? [PDF]

open access: yesOcean Science, 2020
After more than a decade of shallow convection, deep convection returned to the Irminger Sea in 2008 and occurred several times since then to reach exceptional convection depths (> 1500 m) in 2015 and 2016.
P. Zunino, H. Mercier, V. Thierry
doaj   +1 more source

Simulating model uncertainty of subgrid-scale processes by sampling model errors at convective scales [PDF]

open access: yesNonlinear Processes in Geophysics, 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
M. Van Ginderachter   +6 more
doaj   +1 more source

Simulated Precipitation Diurnal Variation With a Deep Convective Closure Subject to Shallow Convection in Community Atmosphere Model Version 5 Coupled With CLUBB

open access: yesJournal of Advances in Modeling Earth Systems, 2020
In order to improve the physical consistency between shallow and deep convection, we modify the deep convective closure in the Community Atmosphere Model version 5 (CAM5) coupled with a third‐order turbulence closure parameterization (i.e., Cloud Layers ...
Ben Yang   +6 more
doaj   +1 more source

Physical controls of Southern Ocean deep‐convection variability in CMIP5 models and the Kiel Climate Model

open access: yesGeophysical Research Letters, 2017
Global climate models exhibit large biases in the Southern Ocean. For example, in models Antarctic bottom water is formed mostly through open‐ocean deep convection rather than through shelf convection.
A. Reintges   +3 more
doaj   +1 more source

Importance of the variability of hydrographic preconditioning for deep convection in the Gulf of Lion, NW Mediterranean [PDF]

open access: yesOcean Science, 2010
We study the variability of hydrographic preconditioning defined as the heat and salt contents in the Ligurian Sea before convection. The stratification is found to reach a maximum in the intermediate layer in December, whose causes and consequences for ...
L. Grignon   +3 more
doaj   +1 more source

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