Performance Comparison between Deep Learning and Optical Flow-Based Techniques for Nowcast Precipitation from Radar Images

Autor: Marino Marrocu, Luca Massidda
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Forecasting, Vol 2, Iss 2, Pp 194-210 (2020)
Druh dokumentu: article
ISSN: 2571-9394
DOI: 10.3390/forecast2020011
Popis: In this article, a nowcasting technique for meteorological radar images based on a generative neural network is presented. This technique’s performance is compared with state-of-the-art optical flow procedures. Both methods have been validated using a public domain data set of radar images, covering an area of about 104 km2 over Japan, and a period of five years with a sampling frequency of five minutes. The performance of the neural network, trained with three of the five years of data, forecasts with a time horizon of up to one hour, evaluated over one year of the data, proved to be significantly better than those obtained with the techniques currently in use.
Databáze: Directory of Open Access Journals