Preprints
https://doi.org/10.5194/nhessd-1-6467-2013
https://doi.org/10.5194/nhessd-1-6467-2013
15 Nov 2013
 | 15 Nov 2013
Status: this preprint was under review for the journal NHESS but the revision was not accepted.

Multilinear approach to the precipitation–lightning relationship: a case study of summer local electrical storms in the northern part of Spain during 2002–2009 period

I. Herrero, A. Ezcurra, J. Areitio, J. Diaz-Argandoña, G. Ibarra-Berastegi, and J. Saenz

Abstract. Storms developed under local instability conditions are studied in the Spanish Basque region with the aim of establishing precipitation–lightning relationships. Those situations may produce, in some cases, flash flood. Data used correspond to daily rain depth (mm) and the number of CG flashes in the area. Rain and lightning are found to be weakly correlated on a daily basis, a fact that seems related to the existence of opposite gradients in their geographical distribution. Rain anomalies, defined as the difference between observed and estimated rain depth based on CG flashes, are analysed by PCA method. Results show a first EOF explaining 50% of the variability that linearly relates the rain anomalies observed each day and that confirms their spatial structure. Based on those results, a multilinear expression has been developed to estimate the rain accumulated daily in the network based on the CG flashes registered in the area. Moreover, accumulates and maximum values of rain are found to be strongly correlated, therefore making the multilinear expression a useful tool to estimate maximum precipitation during those kind of storms.

I. Herrero, A. Ezcurra, J. Areitio, J. Diaz-Argandoña, G. Ibarra-Berastegi, and J. Saenz
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
I. Herrero, A. Ezcurra, J. Areitio, J. Diaz-Argandoña, G. Ibarra-Berastegi, and J. Saenz
I. Herrero, A. Ezcurra, J. Areitio, J. Diaz-Argandoña, G. Ibarra-Berastegi, and J. Saenz

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