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Six and Seven Day Weather Periods
Rhythm in the Weather
18 other sections not shown
27 days amplitude Argentina Atlantic atmospheric pressure auroras average Buenos Aires Calama calories cent centers of action charts column computed cosine series curve days following days later departures from normal earth equator evidence excess faculae forecasts frequency given in table harmonic Harqua Hala high latitudes high solar increased solar activity indicated intensity intervals inverted January July length lines longitude low pressure low solar maxima and minima maximum mean values means of pressure minimum minus monthly means months North northern hemisphere Observatory observed values obtained occur ocean oscillations phase plotted in figure probable error rainfall regions relation seven day period shown in figure smoothed solar activity solar changes solar constant solar maxima solar radiation solar rotation solar values solar-constant southern spots stations summer sun-spot numbers sunspot sunspot period temperature at Buenos tion tropical United values of solar variations waves zero day