We show that the aerosol-cloud-precipitation system exhibits characteristics of the predator-prey problem in the field of population dynamics. Both a detailed large eddy simulation of the dynamics and microphysics of a precipitating shallow boundary layer cloud system and a simpler model built upon basic physical principles, reproduce predator-prey behavior with rain acting as the predator and cloud as the prey. The aerosol is shown to modulate the predator-prey response. Steady-state solution to the proposed model shows the known existence of bistability in cloudiness. Three regimes are identified in the time-dependent solutions: (i) the weakly precipitating regime where cloud and rain coexist in a quasi steady state; (ii) the moderately drizzling regime where limit-cycle behavior in the cloud and rain fields is produced; and (iii) the heavily precipitating clouds where collapse of the boundary layer is predicted. The manifestation of predator-prey behavior in the aerosol-cloud-precipitation system is a further example of the self-organizing properties of the system and suggests that exploiting principles of population dynamics may help reduce complex aerosol-cloud-rain interactions to a more tractable problem.
We present the results of CO emission line observations toward the
Semicircular Galactic supernova remnant (SNR) 3C434.1 (G94.0+1.0). We mapped an
Area covering the whole SNR in the 12CO J=1-0 emission line using the Seoul
Radio Astronomy Observatory (SRAO) 6-m telescope, and found a large molecular...
A great deal of uncertainty exists regarding the chemical diversity of particles in sea spray aerosol (SSA), as well as the degree of mixing between inorganic and organic species in individual SSA particles. Therefore in this study, single particle analysis was performed on SSA parti...
We introduce particle systems in one or more dimensions in which particles
Perform branching Brownian motion and the population size is kept constant
Equal to $N > 1$, through the following selection mechanism: at all times only
The $N$ fittest particles survive, while all the other particles are re...
Pubget Updates sends you emails when Pubget finds new papers that match your search. Use Pubget Updates to get the latest articles for your specialty, written by a colleague, or published by your favorite journals.