TITLE

Precipitation Nowcasting by a Spectral-Based Nonlinear Stochastic Model

AUTHOR(S)
Metta, Sabino; von Hardenberg, Jost; Ferraris, Luca; Rebora, Nicola; Provenzale, Antonello
PUB. DATE
October 2009
SOURCE
Journal of Hydrometeorology;Oct2009, Vol. 10 Issue 5, p1285
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A novel rainfall nowcasting method based on the combination of an empirical nonlinear transformation of measured precipitation fields and the stochastic evolution in spectral space of the transformed fields is introduced. The power spectrum and the amplitude distribution of precipitation are kept constant during the forecast, and a Langevin-type model is used to evolve the Fourier phases. The application of the method to a study case is illustrated, and it is shown that, with this procedure, a forecast skill can be obtained that is superior to those provided by Eulerian or Lagrangian persistence for a lead time of up to two hours.
ACCESSION #
44707324

 

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