CAJ | 학술논문

基于 SODA、CORA 和 CORE 等高分辨率海洋和大气再分析资料，分析了1976／1977年前后黑潮经向热输运的年代际跃变特征，并应用区域海洋模式（ROMS），研究了东海冷涡对黑潮经向热输运年代际跃变的响应．分析与数值实验结果表明：在1976／1977年前后，黑潮经向热输运有明显的跃变，冬、夏季黑潮的热输运分别增加了约8.0％和8.5％；1976／1977年黑潮经向热输运发生跃变后，冬季东海冷涡则没有明显变化，而夏季东海冷涡则明显增强，除了冷涡中心的温度显著降低外，气旋式环流也显著加强．此外，分析还表明：冬季，黑潮经向热输运跃变并未引起黄海暖流的明显变化，而冬季风导致的海水强烈混合冷却作用可能抵消了黑潮经向热输运的影响，这使得东海冷涡的变化并不明显；夏季，受黑潮经向热输运跃变的影响，台湾暖流显著增强，从而引起东海冷涡区域气旋式环流的加强和冷涡中心温度的降低，并且，在其裹挟作用下，东海冷涡向北移动．
기우 SODA、CORA 화 CORE 등고분변솔해양화대기재분석자료，분석료1976／1977년전후흑조경향열수운적년대제약변특정，병응용구역해양모식（ROMS），연구료동해랭와대흑조경향열수운년대제약변적향응．분석여수치실험결과표명：재1976／1977년전후，흑조경향열수운유명현적약변，동、하계흑조적열수운분별증가료약8.0％화8.5％；1976／1977년흑조경향열수운발생약변후，동계동해랭와칙몰유명현변화，이하계동해랭와칙명현증강，제료랭와중심적온도현저강저외，기선식배류야현저가강．차외，분석환표명：동계，흑조경향열수운약변병미인기황해난류적명현변화，이동계풍도치적해수강렬혼합냉각작용가능저소료흑조경향열수운적영향，저사득동해랭와적변화병불명현；하계，수흑조경향열수운약변적영향，태만난류현저증강，종이인기동해랭와구역기선식배류적가강화랭와중심온도적강저，병차，재기과협작용하，동해랭와향북이동．
In this paper,based on the Simple Ocean Data Assimilation (SODA),reanalysis data inter-decadal cli-matic jump characteristics of heat transport and temperature anomalies of Kuroshio in 24°N section in winter and summer around 1976 /1977 are analyzed,and the numerical experiments are then conducted to explore the influ-ences of the Kuroshio inter-decadal climatic jump on East China Sea Cold Eddy (ECSCE).The ocean model used in this study is the Regional Ocean Model System (ROMS).The model is initialized with climatological tempera-ture and salinity from the China Ocean Re-Analysis (CORA)data.Climatological wind obtained from the CORE data is used to force the model respectively to simulate the ECSCE responses to the change of Kuroshio heat trans-port climatic jump.The momentum and fresh water imported by Changjiang River is considered as well.The result shows that after the climate jump the heat transported to the East China Sea and its adjacent seas (ECS)by the Kuroshio is enhanced by 8.0% and 8.5% in winter and summer,respectively.The numerical experiments show that after the longitudinal heat transport by the climate jump of the Kuroshio around 1976 /1977,the cold eddy is enhanced in summer and it changes little in winter.In summer the anticyclone of the cold eddy and the cyclonic circulation strengthens while the temperature reduces markedly in the center of the cold eddy.It shows that in win-ter the longitudinal heat transport by the climate jump of the Kushiro has little effect on the Yellow Sea warm current while a strong mixing caused by winter monsoon may weaken the influence of longitudinal heat transported,which causes insignificant changes of ECSCE.In summer,impacted by the longitudinal heat transport of Kuroshio,the Taiwan warm current is enhanced,which enhances the cyclonic circulation and drops the temperature in the cold eddy areas.At the same time carried by the current,the ECSCE moves northward.