Classification and dynamics of tropical clouds by their fractal dimension

被引：16
|
作者：
Batista-Tomas, A. R. [1 ]
Diaz, O. [2 ]
Batista-Leyva, A. J. [1 ,3 ]
Altshuler, E. [1 ]
机构：
[1] Univ Havana, Grp Complex Syst & Stat Phys, San Lazaro St, Havana 10400, Cuba
[2] Cuban Inst Meteorol InsMet, Havana, Cuba
[3] Inst Super Tecnol & Ciencias Aplicadas InSTEC, Havana, Cuba
来源：
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY | 2016年 / 142卷 / 695期
关键词：
fractals; clouds; atmosphere; CONFORMAL-INVARIANCE; TURBULENCE; RAIN;
D O I：
10.1002/qj.2699
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
The fractal dimension estimated as the area-perimeter relation constitutes a tool for the characterization of clouds. In this article, we apply it for the first time to study the separation of cirrus and cumulonimbus in the Caribbean area. Based on satellite data, we show that the two types can be differentiated by their area-perimeter ratio as follows: D-Ci = 1.37 +/- 0.02 for cirrus, and D-Cb = 1.18 +/- 0.05 for cumulonimbus. We also show that the global' area-perimeter ratio can be used to determine the composition of the cloud field. Moreover, we are able to quantify, through the area-perimeter ratio, the transformation of cumulonimbus into cirrus. Our findings have potential applications for the automatic classification of clouds, and for the understanding of their formation processes.
引用
收藏
页码：983 / 988
页数：6
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