Comparison of calibration methods for the reconstruction of space-time rainfall fields during a rain enhancement experiment in Southern Italy

Arianna Orasi, G. Jona Lasinio, Clarissa Ferrari

Research output: Contribution to journalArticlepeer-review

Abstract

The role of rainfall raingauge observations in calibration of radar derived rainfall estimates is investigated. The final goal is the reconstruction of the rainfall fields over the observed area using both information during a rainfall enhancement experiment. Furthermore, we propose a simple protocol to assess the experiment efficacy. A space- time approach and the use of kriging with external drift are applied and compared. Results are again compared with those one obtained through an ordinary kriging (OK). Data come from a dense raingauge network and a weather radar installed in 1992 for the evaluation of a rain enhancement experiment carried out in Southern Italy. In this paper we report detailed results from one seeding operation carried out on 11 April 1992. The procedure to assess the efficacy of rain enhancement experiment is illustrated for 11 seeding operations.

Original languageEnglish
Pages (from-to)812-834
Number of pages23
JournalEnvironmetrics
Volume20
Issue number7
DOIs
Publication statusPublished - Nov 2009

Keywords

  • Calibration
  • Dynamic linear model
  • Kalman filter
  • Kriging
  • Radar
  • Rainfall
  • Space-time

ASJC Scopus subject areas

  • Statistics and Probability
  • Ecological Modelling

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