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This dataset represents averaged lightning climatology metrics for South Africa derived from the Southern African Lightning Detection Network (SALDN) operated by the South African Weather Service (SAWS). The primary metric is average annual cloud‑to‑ground lightning flash density, expressed as flashes per square kilometre per year, with supporting averaged attributes including flash multiplicity, median peak current, and percentage of positive lightning flashes. |
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This dataset represents averaged lightning climatology metrics for South Africa derived from the Southern African Lightning Detection Network (SALDN) operated by the South African Weather Service (SAWS). The primary metric is average annual cloud‑to‑ground lightning flash density, expressed as flashes per square kilometre per year, with supporting averaged attributes including flash multiplicity, median peak current, and percentage of positive lightning flashes. |
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Data Owner
South African Weather Service (SAWS)
Data Producer
South African Weather Service – Nowcasting and Very Short Range Forecasting Group
Sensor / Network Provider
Vaisala Lightning Detection System (SALDN) |
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<div style="font-family:'Segoe UI';font-size:14px;font-style:normal;font-weight:400;line-height:20px;">Lightning data were collected using the <strong>Southern African Lightning Detection Network (SALDN)</strong>, a ground‑based VLF/LF lightning detection system operational since 2006. Individual lightning strokes detected by multiple sensors were grouped into flashes using space–time clustering algorithms. Daily lightning flash counts were aggregated spatially onto a regular grid and temporally averaged over a multi‑year period to produce climatological averages. The primary output is <strong>average annual cloud‑to‑ground lightning flash density (flashes/km²/year)</strong>. Additional averaged parameters include <strong>average flash multiplicity (strokes per flash)</strong>, <strong>median peak current (kA)</strong>, and <strong>average percentage of positive‑polarity lightning</strong>.</div> |
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<div style="font-family:'Segoe UI';font-size:14px;font-style:normal;font-weight:400;line-height:20px;"><ul><li>Data may be subject to <strong>SAWS cost‑recovery and licensing conditions</strong>.</li><li>Redistribution without written permission from SAWS may be restricted.</li></ul><div style="font-family:'Segoe UI';font-size:14px;font-style:normal;font-weight:400;line-height:20px;"><ul><li>Detection efficiency varies spatially across South Africa.</li><li>Dataset represents <strong>detected lightning</strong>, not all lightning occurrences.</li><li>Values are <strong>climatological averages</strong>, not real‑time or event‑scale measurements. <a target="_blank" rel="noopener noreferrer" href="https://www-cdn.eumetsat.int/files/2021-10/LI_MAG12_D109_Enno_SAWS_LLS_vs_GLD360.pdf">[www-cdn.eumetsat.int]</a></li></ul></div></div> |
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LDR.SRK_Lightning_Hazard |
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["Lightning","Cloud\u2011to\u2011ground lightning","Lightning climatology","Ground flash density","SAWS","WeatherSA","SALDN","Disaster risk","Infrastructure risk","South Africa"] |
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en-ZA |
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