《Table 1.List of sprite observations in the summer of 2015 from the low-light-level imaging system (

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《"Locating Parent Lightning Strokes of Sprites Observed over a Mesoscale Convective System in Shandong Province, China"》

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The lightning location results of LERP are compared with the WWLLN，which mainly detects lightning sferics in the6–22-kHz band（Hutchins et al.，2012）.Based on the sprite observations in a six-year period from 2008 to 2013 at multiple sites in the United States（Lu et al.，2013），we evaluate the location accuracy of WWLLN with respect to 2838sprite-producing strokes through comparison with the National Lightning Detection Network（NLDN）（Cummins et al.，1998） ，whose lightning location accuracy has been shown to be better than 1 km in the continental United States（e.g.，Jerauld et al.，2005；Biagi et al.，2007；Nag et al.，2011）.In most cases，WWLLN can locate the sprite-producing lightning strokes with accuracy better than 10 km（see Appendix A for details）.As shown in Table 1，WWLLN has a relatively high detection efficiency（typically>70%）for the sprite-producing lightning strokes in Shandong Province.In contrast，the detection efficiency of WWLLN for lightning strokes with peak current stronger than-130 kA is estimated to be>35%（Abarca et al.，2010）.Therefore，WWLLN seems to be more sensitive to lightning strokes with relatively large impulse charge moment changes（so，with a high potential for producing sprites）.