Results 21 to 30 of about 197 (99)
Ensemble of Radiative‐Convective Equilibrium Simulations Near the Aggregated and Scattered Boundary
Geophysical Research Letters, 2021 An ensemble of 10 radiative‐convective equilibrium (RCE) simulations near the sharp transition zone between scattered and aggregated states are examined in a square‐domain cloud‐resolving model.
Ching‐Shu Hung, Hiroaki Miura
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Transient Aggregation of Convection: Observed Behavior and Underlying Processes [PDF]
Journal of Climate, 2021 AbstractConvective self-aggregation is among the most striking features emerging from radiative–convective equilibrium simulations, but its relevance to convective disturbances observed in the real atmosphere remains under debate. This work seeks the observational signals of convective aggregation intrinsic to the life cycle of cloud clusters.
Masunaga, Hirohiko +4 more
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Journal of Advances in Modeling Earth Systems, 2020 The Radiative‐Convective Equilibrium Model Intercomparison Project (RCEMIP) consists of simulations at three fixed sea‐surface temperatures (SSTs: 295, 300, and 305 K) and thus allows for a calculation of the climate feedback parameter based on the ...
Tobias Becker, Allison A. Wing
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Aggregation under a forced convective flow [PDF]
Physical Review B, 1992 Morphological transitions are analyzed for a radial multiparticle diffusion-limited aggregation process grown under a convective drift. The introduction of a tangential flow changes the morphology of the diffusion-limited structure, into multiarm structures, inclined opposite to the flow, whose limit consists of single arms, when decreasing density ...
López-Tomàs, Laura +3 more
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Geophysical Research Letters, 2022 The nature of convective organization remains elusive, despite its importance in understanding the role of clouds in climate systems. This study reports a new type of large‐scale structure formed by the self‐organization of deep moist atmospheric ...
Tomoro Yanase +3 more
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Estimating Bulk Entrainment With Unaggregated and Aggregated Convection [PDF]
Geophysical Research Letters, 2018 AbstractTo investigate how entrainment is influenced by convective organization, we use the ICON (ICOsahedral Nonhydrostatic) model in a radiative‐convective equilibrium framework, with a 1 km spatial grid mesh covering a 600 by 520 km2 domain. We analyze two simulations, with unaggregated and aggregated convection, and find that, in the lower free ...
Tobias Becker +3 more
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Ascending Columns, WTG, and Convective Aggregation [PDF]
Journal of the Atmospheric Sciences, 2021 AbstractAnalytic solutions are derived for a convecting atmosphere with mean ascent using a zero-buoyancy bulk-plume approximation for moist convection. It has been suggested that such solutions should serve as a model for the relationship between humidity, instability, and precipitation in the tropics, but it is shown here that this interpretation is ...
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Self‐Aggregation of Convection in Spatially Varying Sea Surface Temperatures
Journal of Advances in Modeling Earth Systems, 2020 The phenomenon of self‐aggregation of convection was first identified in convection‐permitting simulations of radiative convective equilibrium, characterized by homogeneous boundary conditions and in the absence of planetary rotation.
Sebastian K. Müller, Cathy Hohenegger
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Impact of a Mixed Ocean Layer and the Diurnal Cycle on Convective Aggregation [PDF]
Journal of Advances in Modeling Earth Systems, 2021 AbstractWe investigate how ocean feedbacks and the diurnal cycle impact convective aggregation using a slab ocean coupled to a cloud resolving model. With a 20 m mixed layer ocean, aggregation occurs after 25 days. Thinner ocean layers slow the onset of clustering, with a 1 m ocean layer needing around 43 days.
Tompkins, Adrian M., Semie, Addisu G.
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More Intense, Organized Deep Convection With Shrinking Tropical Ascent Regions
Geophysical Research Letters, 2022 Changes in the frequency and morphology of convection in a warming climate have major implications for the hydrologic cycle and continue to be a large source of variability in climate models.
Kyle R. Wodzicki, Anita D. Rapp
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