Diurnal self-aggregation

@article{Haerter2020DiurnalS,
  title={Diurnal self-aggregation},
  author={Jan Olaf Haerter and Bettina Meyer and Silas Boye Nissen},
  journal={npj Climate and Atmospheric Science},
  year={2020},
  volume={3},
  pages={1-11}
}
Convective self-aggregation is a modelling paradigm for convective rain cell organisation over a constant-temperature tropical sea surface. This set-up can give rise to cloud clusters developing over timescales of weeks. In reality, sea-surface temperatures do oscillate diurnally, affecting the atmospheric state and influencing rain rates significantly. Over land, surface temperatures vary more strongly. Here, we carry out a suite of cloud-resolving numerical experiments, and find that… 
Self-organized quantization and oscillations on continuous fixed-energy sandpiles.
Atmospheric self-organization and activator-inhibitor dynamics in biology provide examples of checkerboardlike spatiotemporal organization. We study a simple model for local activation-inhibition
Anthropogenic intensification of short-duration rainfall extremes
Short-duration (1–3 h) rainfall extremes can cause serious damage to societies through rapidly developing (flash) flooding and are determined by complex, multifaceted processes that are altering as
Mechanical Forcing of Convection by Cold Pools: Collisions and Energy Scaling
  • B. Meyer, J. Haerter
  • Environmental Science, Physics
    Journal of advances in modeling earth systems
  • 2020
TLDR
These two dynamic regimes are characterized by two distinct power law exponents and explain the transition by the onset of “lobe‐and‐cleft” instabilities at the cold pool head, which may help decipher the role of cold pools in spatially organizing convection and precipitation.
How weakened cold pools open for convective self-aggregation
<p>In radiative-convective equilibrium (RCE) simulations, convective self-aggregation (CSA) is the spontaneous organization into segregated cloudy and cloud-free regions. Evidence exists for how CSA

References

SHOWING 1-10 OF 83 REFERENCES
Special issue: Advances in convection-permitting climate modeling
Convection-permitting or kilometer-scale climate models are modeling systems that allow the explicit simulation of atmospheric deep convection and a much-improved representation of orography and
Observed Warm‐Season Characteristics of MCS and Non‐MCS Rainfall and Their Recent Changes in the Central United States
Warm‐season rainfall characteristics in the central United States are investigated as they play important roles in ecohydrology and agricultural productivity. Using rainfall observations, we compare
The Burdwood Bank Circulation
Response of Extreme Precipitating Cell Structures to Atmospheric Warming
TLDR
It is found that warmer and moister conditions result in an overall increase of both intensities and spatial extent of individual rain cells, which lead to larger and more intense rain cells that can produce up to almost 20% more rain per degree warming and therefore have a large impact.
Global Cloud-Resolving Models
TLDR
GCRMs are designed to resolve the multiscale nature of moist convection in the global dynamics context, without using cumulus parameterization, and are the promise of a new generation of global weather and climate simulations.
A review
Convective Self‐Aggregation As a Cold Pool‐Driven Critical Phenomenon
Convective self‐aggregation is when thunderstorm clouds cluster over a constant temperature surface in radiative convective equilibrium. Self‐aggregation was implicated in the Madden‐Julian
Diurnal Cloud and Circulation Changes in Simulated Tropical Cyclones
Observations of the diurnal cycle in tropical cyclones (TCs) systematically indicate a ∼12‐hr offset between peak rainfall rate and the maximum height of anvil clouds in the TC cloud canopy. This
Intensified Cold Pool Dynamics Under Stronger Surface Heating
The observed increase of convective extreme precipitation intensities with temperature beyond the Clausius‐Clapeyron rate has recently directed attention to nonequilibrium processes that might cause
...
...