冬季氣温の長期的豫報

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  • Long-range forecast of the winter air temperature

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In western Japan there is a well tried weather proverb current among laymen that a severe winter is preceded by the abnormally hot summer. The author of the present paper has intended to try this weather lore using a data of instrumental observations, and has arrived at a striking result that the minimum temperature of the coming winter can be calculated with utmost accuracy from the mean temperature of the past summer.<br> At Hamada on the west coast of Japan the mean air temperature for the warm season from the second decade of May to the end of the second decade of Septmber, and the minimum temperature in the following winter are as follows:-<br> Calling the mean air temperature T and the minimum temperature in winter t the author have obtained the following for mula:-<br> t=55.44-2.69T<br> The minimum temperatures given in the fourth column of the preceding table are those calculated by this formulas.

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