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Evidence item

The excerpt attributes repeated lightning concentration at tall grounded structures to stronger upper-extremity fields initiating upward leaders earlier than at short nearby objects. DIRECT_TEXT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 8824

Source: Luminosity Characteristics of CN Tower Lightning Flash Components (I. Sra, A. M. Hussein, P. Liatos, Ryerson University) · locator {} · excerpt hash sha256:71671dbeba2382d1ecca3e7e0643e8891eff130f65e0d7b8c2368caddf6dc8b9

Exact excerpt
The CN Tower usually receives several dozens of lightning flashes yearly, due to its tall altitude. However, the lightning ground flash density in Toronto is about two [Hussein et al., 2010a]. A grounded tall structure produces relatively large electric field enhancement near their upper extremities so that upward leaders are initiated earlier from these structures as compared to short objects in its vicinity and, therefore, serve to make the tall structure a preferential lightning termination point.

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