Measurement of Rainfall Rates by Lidar

Autor: J. A. Weinman, Edwin W. Eloranta, Scott T. Shipley
Rok vydání: 1974
Předmět:
Zdroj: Journal of Applied Meteorology. 13:800-807
ISSN: 0021-8952
Popis: Monostatic lidar is explored as a means for determining the rainfall rate over an extended atmospheric path with a spatial resolution comparable to that of rain gages. An empirical relationship is established between the optical extinction coefficient of rain βr (km−1) and the rainfall rate R (mm hr−1). Correlation of lidar-derived rainfall extinction and gage rainfall rates at Madison gives βr = 0.16 R0.74. The βr-R relations obtained from the work of other authors compare well with this relationship. A lidar equation which accounts for the multiple scattering of light in rain is presented. A numerical procedure which derives estimates of βr as a function of range from lidar returns is developed. Examples of lidar-derived rainfall rate range profiles in spatially inhomogeneous thunderstorms are given.
Databáze: OpenAIRE