Results 61 to 70 of about 197 (99)

Precipitation Characteristics in the Community Atmosphere Model and Their Dependence on Model Physics and Resolution

Journal of Advances in Modeling Earth Systems, 2019
Precipitation amount (A), frequency (F), intensity (I), and duration (D) are important properties of precipitation, but their estimates are sensitive to data resolution.
Di Chen, Aiguo Dai
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Convective Self‐Aggregation As a Cold Pool‐Driven Critical Phenomenon [PDF]

Geophysical Research Letters, 2019
AbstractConvective self‐aggregation is when thunderstorm clouds cluster over a constant temperature surface in radiative convective equilibrium. Self‐aggregation was implicated in the Madden‐Julian Oscillation and hurricanes. Yet, numerical simulations succeed or fail at producing self‐aggregation, depending on modeling choices. Common explanations for
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Global variability in radiative-convective equilibrium with a slab ocean under a wide range of CO2 concentrations

Tellus: Series A, Dynamic Meteorology and Oceanography, 2020
In radiative-convective equilibrium (RCE), radiative cooling of the troposphere is roughly balanced by the vaporization enthalpy set free by precipitating moist convection.
Gabor Drotos, Tobias Becker, Thorsten Mauritsen, Bjorn Stevens   +3 more
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Seasonal Emergence and Circulation Coupling of Moist Layers Over the Tropical Atlantic

Geophysical Research Letters
Mid‐tropospheric elevated moist layers (EMLs) near the melting level have been found in various regional observational studies in the tropics. Recently, a preponderance of EMLs in the presence of aggregated convection was found in cloud resolving ...
Marc Prange, Bjorn Stevens, Stefan A. Buehler   +2 more
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Nonlocally Coupled Moisture Model for Convective Self-Aggregation

Journal of the Atmospheric Sciences
Abstract Clouds play a central role in climate physics by interacting with precipitation, radiation, and circulation. Despite being a fundamental issue in convective organization, the self-aggregation of clouds lacks a theoretical explanation due to its complexity.
Tomoro Yanase, Shin-ichiro Shima, Seiya Nishizawa, Hirofumi Tomita   +3 more
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Sensitivity of Self‐Aggregation and the Key Role of the Free Convection Distance

Journal of Advances in Modeling Earth Systems
Recently, Biagioli and Tompkins (2023, https://doi.org/10.1029/2022ms003231) used a simple stochastic model to derive a dimensionless parameter to predict convective self aggregation (SA) development, which was based on the derivation of the maximum free
A. Casallas, A. M. Tompkins, C. Muller, G. Thompson   +3 more
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Convective Self‐Aggregation in Diurnally Oscillating Sea Surface Temperature and Solar Forcing Experiments

Journal of Advances in Modeling Earth Systems
We have addressed convective self‐aggregation (CSA) in steady and oscillating sea surface temperature (SST) and solar radiation (SOLIN) cloud‐resolving model simulations in a non‐rotating radiative‐convective equilibrium (RCE) framework.
Bidyut Bikash Goswami, Ziyin Lu, Caroline Muller   +2 more
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Numerical Diffusion and Turbulent Mixing in Convective Self‐Aggregation

Journal of Advances in Modeling Earth Systems
Convective Self‐Aggregation (CSA) is a common feature of idealized numerical simulations of the tropical atmosphere in Radiative‐Convective Equilibrium (RCE).
L. Silvestri, M. Saraceni, P. Bongioannini Cerlini   +2 more
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The Unreasonable Efficiency of Total Rain Evaporation Removal in Triggering Convective Self‐Aggregation

Geophysical Research Letters
The elimination of rain evaporation in the planetary boundary layer (PBL) has been found to lead to convective self‐aggregation (CSA) even without radiative feedback, but the precise mechanisms underlying this phenomenon remain unclear.
Y.‐L. Hwong, C. J. Muller
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The Madden-Julian Oscillation and Convective Aggregation

The Madden-Julian oscillation (MJO) is a region of enhanced precipitation which forms every 30-60 days over the Indian Ocean and slowly propagates to the east over the Pacific. Despite being the dominant mode of intraseasonal variability in the tropical troposphere, most numerical models struggle to accurately predict the MJO, and this issue is ...
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