동해 재분석 자료에 나타난 북한한류의 계절 및 경년변동성
Seasonal and Interannual Variability of the North Korean Cold Current in the East Sea Reanalysis Data
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assimilation scheme, we investigated spatial and temporal variability of the North Korean Cold Current(NKCC) in the East Sea. The climatological monthly mean transport of the NKCC clearly shows seasonalvariation of the NKCC within the range of about 0.35 Sv (=106m3/s), which increases from its minimum(about 0.45 Sv) through December-January to March, decreases during March and May, and then increasesagain to the maximum (about 0.8 Sv) in August-September. The volume transport of the NKCC showssouthward current of the NKCC appears often not only in summer but in winter as well. The width of theNKCC is about 35 km near the Korean coast and its core is located under the East Korea Warm Current.The North Korean Cold Water (NKCW), characterized by low salinity and low temperature, is located bothunder the Tsushima Warm Water and in the western side of the maximum southward current of the NKCCthat means the NKCC advects the NKCW southward along the Korean coast. It is revealed that theintermediate low salinity water, formed of the Vladivostok in winter, flows southward to the south of 37oNthrough 2~3 paths; one path along the Korean coast, another one along 132oE, and the middle path along130oE. The path of the intermediate low salinity varies with years. The reanalysis fields suggest that theNKCW is advected through the paths along the Korean coast and along 130oE.
Abstract
assimilation scheme, we investigated spatial and temporal variability of the North Korean Cold Current(NKCC) in the East Sea. The climatological monthly mean transport of the NKCC clearly shows seasonalvariation of the NKCC within the range of about 0.35 Sv (=106m3/s), which increases from its minimum(about 0.45 Sv) through December-January to March, decreases during March and May, and then increasesagain to the maximum (about 0.8 Sv) in August-September. The volume transport of the NKCC showssouthward current of the NKCC appears often not only in summer but in winter as well. The width of theNKCC is about 35 km near the Korean coast and its core is located under the East Korea Warm Current.The North Korean Cold Water (NKCW), characterized by low salinity and low temperature, is located bothunder the Tsushima Warm Water and in the western side of the maximum southward current of the NKCCthat means the NKCC advects the NKCW southward along the Korean coast. It is revealed that theintermediate low salinity water, formed of the Vladivostok in winter, flows southward to the south of 37oNthrough 2~3 paths; one path along the Korean coast, another one along 132oE, and the middle path along130oE. The path of the intermediate low salinity varies with years. The reanalysis fields suggest that theNKCW is advected through the paths along the Korean coast and along 130oE.
참고문헌 (26)
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