TITLE

Monte Carlo Simulation of the Formation of Snowflakes

AUTHOR(S)
Maruyama, Ken-Ichi; Fujiyoshi, Yasushi
PUB. DATE
May 2005
SOURCE
Journal of the Atmospheric Sciences;5/1/2005, Vol. 62 Issue 5, p1529
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A stochastic microphysical model of snow aggregation that combines a simple aggregation model with a Monte Carlo method was developed. Explicit treatment of the shape of individual snowflakes in the new model facilitates examination of the structure of snowflakes and the relationships between the parameters of the generated snowflakes, such as mass versus diameter, in addition to comparisons with observations. In this study, complexities in the shape of snowflakes are successfully simulated, and the understanding of the evolution of their size distribution is advanced. The mean diameter of snow particles evolves more rapidly in the aggregate model than in the sphere model. However, growth rates of the aggregates greatly depend on the collision section of particles in aggregation. The mean mass of snowflakes in the aggregate model grows more slowly than the mass in the sphere model when the sum of the particle cross section is used as the collision cross section. The mean mass grows more quickly when a circle is used whose radius is the sum of the radii of two particles. Sensitivity experiments showed that aggregation also depends on the mean and standard deviation of the initial distribution, and on the density of constituent particles.
ACCESSION #
17239770

 

Related Articles

  • Regional frequency analysis of heavy precipitation in the Czech Republic by improved region-of-influence method. Gaál, L.; Kyselý, J. // Hydrology & Earth System Sciences Discussions;2009, Vol. 6 Issue 1, p273 

    The region-of-influence (ROI) approach is implemented for modelling the probabilities of heavy 1-day and 5-day precipitation amounts in the Czech Republic. Compared to the previous study for Slovakia (Gaál et al., 2008), an improved ROI methodology that makes use of a regional homogeneity...

  • Multi-parameter uncertainty analysis of a bifurcation point. Knopf, B.; Flechsig, M.; Zickfeld, K. // Nonlinear Processes in Geophysics;2006, Vol. 13 Issue 5, p531 

    Parameter uncertainty analysis of climate models has become a standard approach for model validation and testing their sensitivity. Here we present a novel approach that allows one to estimate the robustness of a bifurcation point in a multi-parameter space. In this study we investigate a box...

  • Giant Sea-Salt Aerosols and Warm Rain Formation in Marine Stratocumulus. Jensen, Jørgen B.; Lee, Sunhee // Journal of the Atmospheric Sciences;Dec2008, Vol. 65 Issue 12, p3678 

    The concentrations and sizes of smaller aerosols (radius smaller than 0.5 μm) in the marine atmosphere vary owing to natural and anthropogenic factors. The concentrations and sizes of giant and ultragiant aerosols vary primarily due to wind-speed-dependent wave breaking. In climate models the...

  • Statistical significance of trends in monthly heavy precipitation over the US. Mahajan, Salil; North, Gerald; Saravanan, R.; Genton, Marc // Climate Dynamics;Apr2012, Vol. 38 Issue 7/8, p1375 

    Trends in monthly heavy precipitation, defined by a return period of one year, are assessed for statistical significance in observations and Global Climate Model (GCM) simulations over the contiguous United States using Monte Carlo non-parametric and parametric bootstrapping techniques. The...

  • Evolutionary game dynamics and distributed recency-weighted learning. Sasaki, Yuya // Journal of Evolutionary Economics;Oct2005, Vol. 15 Issue 4, p365 

    This paper presents a relationship between evolutionary game dynamics and distributed recency-weighted Monte Carlo learning. After reviewing some existing theories of replicator dynamics and agent-based Monte Carlo learning, we provide proofs of the formulation-level equivalence between these...

  • Comparison of Eurovision Song Contest Simulation with Actual Results Reveals Shifting Patterns of Collusive Voting Alliances. Gatherer, Derek // Journal of Artificial Societies & Social Simulation;Mar2006, Vol. 9 Issue 2, p1 

    The voting patterns in the Eurovision Song Contest have attracted attention from various researchers, spawning a small cross-disciplinary field of what might be called 'eurovisiopsephology' incorporating insights from politics, sociology and computer science. Although the outcome of the contest...

  • A Monte Carlo Study Comparing the Levene Test to Other Homogeneity of Variance Tests. Katz, Gary S.; Restori, Alberto F.; Lee, Howard B. // North American Journal of Psychology;2009, Vol. 11 Issue 3, p511 

    The Levene Test is used for testing the homogeneity of variances in a popular statistical package, SPSS. A series of Monte Carlo studies were conducted to determine how "good" this test fares against other similar tests such as the Z-variance, modified Z-variance, O'Brien, and Fmax tests. The...

  • A NOVEL INTERACTING MULTIPLE MODEL PARTICLE FILTER FOR MANEUVERING TARGET TRACKING IN CLUTTER. Jiantao Wang; Bo Fan; Yanpeng Li; Zhaowen Zhuang // Progress in Electromagnetics Research C;Mar2013, Vol. 35, p177 

    In this paper, a novel interactive multiple model particle filter (IMMPF) is developed after a Bayesian estimator for maneuvering target tracking in clutter is derived theoretically. In this new algorithm, base state estimation and modal state estimation are completely separated to control the...

  • Hybrid Mapping Scheme for Recent Orthogonal FDMA Schemes. Al-kamali, F. S. // International Journal of Communications, Network & System Scienc;Mar2013, Vol. 6 Issue 3, p149 

    Single-carrier frequency-division multiple access (SC-FDMA) and orthogonal frequency division multiple access (OFDMA) systems are new orthogonal multiple access systems. They have been adopted in the 3GPP long term evolution (3GPP-LTE). In these systems, there are only two types of subcarrier...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics