Researches on the Variations of Oceanographic Conditions in the Region of the Ocean Weather Station “ Extra ” in the North Pacific Ocean (II)

Abstract

The present investigation is based upon the data observed at the Ocean Weather Stations " Extra " (39°N, 153°E) and " Tango " (29°N, 135°E) from March 1948 to November 1953. Notable features of the annual variations of the air and the sea-surface temperatures and the wind are described, the comparison being made between the two stations. Some relationships between those elements are examined. It is found that a very high correlation exists between the air and the sea-surface temperature anomalies during the warm season (from May to October) and, on the other hand, that during the cold season (from November to April) the air temperature anomaly is more closely associated with the anomaly of the NS component of wind rather than with the sea-surface temperature. 1956Researches on the Variations of Oceanogaphic Conditions263

Researches on the Variations of Oceanographic Condition s in the region of the Ocean Weather Station “ Extra ” in the North Pacific Ocean (IV)

“…Koizumi [4]) . The extreme values in the diurnal variation of 0,, take place at the time when gain and loss of heat at the sea surface come to a balance.…”

“…In the summer season, since the heat gain at the sea surface is generally great and the heat loss from the sea surface is small (for the temperature difference between the air and the sea surface is small and the evaporation from the sea is low [4]) , the time when the heat gain is exceeded by the heat loss (the time of maximum : Tzt,H) is to occur later than in the winter season, if we ignore the diurnal variation of the heat loss. On the other hand, the time when the heat gain exceeds the heat loss (the time of minimum : T,,L) is to occur later in the winter season when the sunrise is later and the heat loss is greater than in the summer season.…”