Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010)

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Index</td><td class="align_center">1961–1970</td><td class="align_center">1971–1980</td><td class="align_center">1981–1990</td><td class="align_center">1991–2000</td><td class="align_center">2001–2010</td><td class="align_center">1961–2010</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Negative</td><td class="align_center">77.2</td><td class="align_center">70</td><td class="align_center">75.1</td><td class="align_center">73.4</td><td class="align_center">71.5</td><td class="align_center">76.7</td></tr><tr><td class="align_left">Positive</td><td class="align_center">22.8</td><td class="align_center">30</td><td class="align_center">24.98</td><td class="align_center">26.6</td><td class="align_center">28.5</td><td class="align_center">23.3</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The percentage of country’s areas (studied stations) influenced by positive and negative anomalies of thunderstorms in different periods.</div>

Advances in Meteorology

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Table 3

Table 3: Harmonic Analysis of the Spatiotemporal Pattern of Thunderstorms in Iran (1961–2010) 