On the Relation between the Sea Surface Water Temperature in the Sea East of Japan and 500 mb HeightDifference

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  • SHINJI Fukutaro
    Oceanographical Section, Marine Division, Japan Meteorological Agency

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  • 本州東方海域南部沖合の表面水温と500mb面高度差との関係について
  • ホンシュウ トウホウ カイイキ ナンブ オキアイ ノ ヒョウメン スイオン ト 500mbメン コウドサ ト ノ カンケイ ニ ツイテ

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Abstract

The 500 mb height difference seems to be closely related to the sea surface water temperature in the sea east of Japan. For example, in summer, the correlation coefficient between 500 mb height difference (60°-40°N, 150°E) and sea surface water temperature has a value of -0.70. And the coefficient between the sea surface water temperature in summer and 500 mb height difference (60°-40°N, 150°E) in the previous autumn has value of +0.48 (+0.70, if the value of 1961 is excluded). Besides, there seems to be a cyclic fluctuation with a period of nearly five years in the 500 mb height difference (50°-30°N, 140°-180°E mean) and also in the sea surface water temperature.

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