Abstract
Oceanographic features around Korean waters related to the global change were studied by analysis of the longterm variation of water temperature, dissolved oxygen, sea level of the surface layer with 1<TEX>$^{\circ}C$</TEX> temperature, spatial position of the subpolar front in the East Sea/Japan Sea (the East sea hereafter) and the Wolf Sunspot Number. With the global warming, the temperature of Korean waters has been increased 0.5∼1.0<TEX>$^{\circ}C$</TEX> for 33years (1968∼2000). In case of the dissolved oxygen in the East Sea has been decreased 0.46<TEX>$m\ell$</TEX>/<TEX>$\ell$</TEX>. Year to year vertical fluctuations of the monthly anomalies of the surface layer with 1<TEX>$^{\circ}C$</TEX>water in the East Sea have predominant periods with 15years as the longterm variation of Arctic climate, 12 and 18years as the El Nino-Southern Oscillation. Spatial position of the subpolar front in the East Sea moved to northern part of the sea from the southern part of the sea with the increasing sea surface temperature. The relationship between the number of Wolf Sunspot and the anomalies of sea surface temperature was very closer after the late of 1980s than those before the early of 1980s in Korean waters.
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