Abstract
Since the establishment of meteorological observations in Japan, the climatic factors in winter and summer change in parallel with the 11-year running means of the sunspot relative numbers, though the parallelism does not hold after about 1940. The mechanism which governs the trends is considered to be as shown in the following table and vice versa, according to Simpson's theory on the glacial and interglacial ages. The connection seems to be inconceivable, but it is presumed that in the Okhotsk Sea it was warmer in glacial ages in the quarternary period than at present.
