000186786 001__ 186786
000186786 005__ 20181203023135.0
000186786 0247_ $$2doi$$a10.1016/j.atmosres.2012.08.014
000186786 022__ $$a0169-8095
000186786 02470 $$2ISI$$a000320749500012
000186786 037__ $$aARTICLE
000186786 245__ $$aOn the proportion of upward flashes to lightning research towers
000186786 260__ $$bElsevier$$c2013$$aNew York
000186786 269__ $$a2013
000186786 300__ $$a7
000186786 336__ $$aJournal Articles
000186786 520__ $$aWe compare in this paper direct measurements obtained on the towers on San Salvatore Mountain (Switzerland) and on the Gaisberg Mountain (Austria). They are situated in similar topographical environments but in different lightning activity zones. Direct measurements of lightning currents on these towers have revealed a major difference in terms of the number of downward flashes. While measurements made by Berger and co-workers revealed a significant number of downward flashes on the two towers on San Salvatore Mountain, more recent observations on the Gaisberg and Peissenberg towers were essentially composed of upward flashes. We use in this paper a new method to estimate the proportion of upward/downward flashes to a given tower, based on the data from lightning location systems. The analysis using the proposed method explains the discrepancy in terms of the measured number of downward flashes in the Gaisberg and San Salvatore towers. The analysis presented reveals also that in the evaluation of the percentage of upward flashes initiated from a tall structure, different parameters should be carefully examined, namely (i) the value of the ground flash density, (ii) the topographical conditions, and (iii) the presence of other tall structures in the region from which upward flashes might be initiated. (c) 2012 Elsevier B.V. All rights reserved.
000186786 6531_ $$aUpward lightning
000186786 6531_ $$aDownward lightning
000186786 6531_ $$aTowers
000186786 6531_ $$aLightning incidence
000186786 6531_ $$aMountains
000186786 700__ $$0244489$$g188637$$aSmorgonskiy, Alexander
000186786 700__ $$0240565$$g106170$$aRachidi, Farhad
000186786 700__ $$aRubinstein, Marcos
000186786 700__ $$aDiendorfer, Gerhard
000186786 700__ $$aSchulz, Wolfgang
000186786 773__ $$j129-130$$tAtmospheric Research$$q110-116
000186786 909C0 $$xU12147$$0252310$$pEMC
000186786 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:186786
000186786 917Z8 $$x106170
000186786 937__ $$aEPFL-ARTICLE-186786
000186786 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000186786 980__ $$aARTICLE