Results 81 to 90 of about 197 (99)

Imprint of the convective parameterization and sea‐surface temperature on large‐scale convective self‐aggregation

Journal of Advances in Modeling Earth Systems, 2017
AbstractRadiative‐convective equilibrium simulations with the general circulation model ECHAM6 are used to explore to what extent the dependence of large‐scale convective self‐aggregation on sea‐surface temperature (SST) is driven by the convective parameterization. Within the convective parameterization, we concentrate on the entrainment parameter and
Tobias Becker, Cathy Hohenegger, Björn Stevens   +2 more
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Regimes of Convective Self-Aggregation in Convection-Permitting Beta-Plane Simulations

Journal of the Atmospheric Sciences, 2023
Abstract The spontaneous self-aggregation (SA) of convection in idealized model experiments highlights the importance of interactions between tropical convection and the surrounding environment. The authors have shown that SA fundamentally changes with the background rotation in previous f-plane simulations, in terms of both the resulting forms of ...
Jacob D. Carstens, Allison A. Wing
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Convective aggregation in idealized stochastic models

2022
<p>Numerical simulations of radiative-convective equilibrium in high-resolution cloud-resolving models (CRMs) revealed the tendency of atmospheric convection to self-aggregate on periods of several weeks when the domain is sufficiently large.
Giovanni Biagioli, Adrian Mark Tompkins
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THE ROLE OF CONVECTION AND DIFFUSION ON PLATELET ADHESION AND AGGREGATION

Annals of the New York Academy of Sciences, 1972
SummaryThe reactions among clotting components, among platelets, and between these groups are complex biochemical phenomena that importantly affect thrombogenesis, but thrombogenesis is also affected by the physical phenomena of convection and diffusion, which, in turn, are importantly mediated by conditions of flow.
E F, Leonard, E F, Grabowski, V T, Turitto   +2 more
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Muitifractals in Convection and Aggregation

1988
Patterns found in convection and aggregation are often multifractals and can be characterized by a continuum of exponents. This differs from critical phenomena where typically a finite number of relevant exponents is needed. The set of exponents for a multifractal is conveniently presented as an f(α) spectrum, i.e., a spectrum of pointwise dimensions ...
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The impact of land-sea contrasts in the aggregation of convection

2022
<p>The self-aggregation of convection in idealised models has been widely studied. Work has been done to identify key physical mechanisms responsible for both driving and maintaining aggregation in a range of idealised radiative-convective equilibrium (RCE) models.
Beth Dingley, Guy Dagan, Ross Herbert, Philip Stier   +3 more
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Forced and natural convection in aggregate-laden nanofluids

Journal of Nanoparticle Research, 2011
A number of experimental and theoretical studies of convective heat transfer in nanofluids (liquid suspensions of nanoparticles, typically with features below 100 nm in size) reveal contrasting results; nanoparticles can either enhance or reduce the convective heat transfer coefficient.
Thaseem Thajudeen, Christopher J. Hogan
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Aggregation study of Brownian nanoparticles in convective phenomena

Journal of Thermal Analysis and Calorimetry, 2018
The explanation of abnormal enhancement of transported energy in colloidal nanoparticles in a liquid has sparked much interest in recent years. The complexity comes from the inter-particle phenomenon and cluster formation. The process of nanoparticle aggregation, which is caused by convective phenomena and particle-to-particle interaction energy in a ...
Mahdavi, Mostafa, Sharifpur, Mohsen, Ahmadi, Mohammad Hossein, Meyer, Josua P.   +3 more
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Tracking aggregates of deep convective systems in the tropics

In the tropics, the spatio-temporal aggregation of deep convective systems (DCS) has strong implications for the regional and global energy balance, for cloud-circulation interactions, and for the production of heavy precipitation on various scales. Yet, no ubiquitous definition or tracking algorithm exists for identifying cloud "aggregates", or cloud "
Benjamin Fildier, Obed Saba
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Spatial Aggregation Arising from Convective Processes

1993
Irving Langmuir (1938) carried out the first scientific investigation of the phenomenon now called Langmuir circulation. This physical process became known to him by the spatial aggregation of biological material that it caused, which he observed as rows of Sargassum on the ocean surface during a cross-Atlantic voyage by ship. Had the patchiness in the
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