Abstract
SOME researches have been carried out in order to elucidate recent climatic fluctuations. Maps have been constructed, showing for the whole earth : (1) the extension of severe winters and mild winters, cool summers and warm summers, cold years and warm years ; and (2) the difference T(1911–40) — T(1881–1910) , R(1911–40) — R1981–1910 and P(1911–40) — P(1981–1910) respectively ; T, R and P are the normals of temperature, rainfall and pressure for the periods 1881–1910 and 1911–40, January, July and year.
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