Modified gamma model for Singapore rain drop size distribution

Author

Ong, J.T. ; Shan, Y.Y.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

Volume

4

fYear

1997

fDate

3-8 Aug 1997

Firstpage

1757

Abstract

A modified gamma model is used to describe the rain drop size distribution in Singapore (1°21´N, 103°41´). The general expression of the moment estimates for the model is derived first. Since Joss type Distrometer RD69 is used in the measurement, the special equations for such data are then derived. The parameters for the modified gamma model are calculated for ten rainfall rates ranging from 1 mm/hr to 140 mm/hr. Using the least square fitting method, the general model suitable for all rainfall rates is obtained. The theoretical model is compared with the measured data. It shows that the derived model can be used to represent the Singapore rain drop size distribution

Keywords

rain; Joss type Distrometer RD69; Singapore; atmosphere; meteorology; modified gamma model; rain; rain drop; raindrop; rainfall rate; size distribution; theoretical model; Communication systems; Degradation; Differential equations; Electronic mail; Genetic expression; Least squares methods; Microwave communication; Microwave frequencies; Rain; Size measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International

Print_ISBN

0-7803-3836-7

Type

conf

DOI

10.1109/IGARSS.1997.609059

Filename

609059