Research Article
Dependence of Warm Season Cloud-to-Ground Lightning Polarity on Environmental Conditions over Sichuan, Southwest China
Figure 3
Pearson’s correlation coefficients between relative frequency of +CG lightning (unit: %) and (a) CAPE (unit: J kg−1), (b) SP (unit: hPa), (c) THETA (unit: K), (d) SHEAR-5 km (unit: m s−1), (e) SHEAR-3 km (unit: m s−1), and (f) VV-3 km (Pa s−1) during warm season. The correlation coefficient in each grid box was calculated from 78 months of monthly data, and the cross symbol in the grid box indicated that the grid passed the significance test at a 95% confidence level.
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