广西科学
廣西科學
엄서과학
GUANGXI SCIENCES
2014年
4期
331-337
,共7页
高劲松%陈波%何小英%侍茂崇
高勁鬆%陳波%何小英%侍茂崇
고경송%진파%하소영%시무숭
海南岛西岸%上升流%暖池%数值模型(POM)%敏感性实验
海南島西岸%上升流%暖池%數值模型(POM)%敏感性實驗
해남도서안%상승류%난지%수치모형(POM)%민감성실험
western coast of Hainan Island%up-welling%warm pool%numerical model (POM)%sensitive experiements
【目的】进一步探讨海南岛西岸的上升流与暖池的特征及生成机制。【方法】首先构建更为全面的控制模型（控制实验），包括日平均风场、热通量、侧边界通量、潮汐强迫以及河流径流等强迫场，然后在控制实验基础上，构建无潮汐强迫、无热通量强迫、无季风强迫等3个敏感性实验来分析3种强迫因子对海南岛西岸上升流与暖池的作用。【结果】夏季海南岛西岸存在上升流，该上升流受热通量和潮混合共同控制，缺乏其中任何一项上升流都会消失，而西南季风起反作用。另外，海南岛西岸在冬半年为暖池控制，秋季更为显著。东北季风引起的垂向混合与潜热通量对暖池起相当作用，ENSO事件对暖池的强度也有一定影响。【结论】控制实验结果与“908”调查结果及历史观测数据吻合较好，在流场与水团验证方面效果理想。另外，敏感性实验结果得出了比前人更完善的海南岛西岸上升流与暖池生成机制的观点。
【目的】進一步探討海南島西岸的上升流與暖池的特徵及生成機製。【方法】首先構建更為全麵的控製模型（控製實驗），包括日平均風場、熱通量、側邊界通量、潮汐彊迫以及河流徑流等彊迫場，然後在控製實驗基礎上，構建無潮汐彊迫、無熱通量彊迫、無季風彊迫等3箇敏感性實驗來分析3種彊迫因子對海南島西岸上升流與暖池的作用。【結果】夏季海南島西岸存在上升流，該上升流受熱通量和潮混閤共同控製，缺乏其中任何一項上升流都會消失，而西南季風起反作用。另外，海南島西岸在鼕半年為暖池控製，鞦季更為顯著。東北季風引起的垂嚮混閤與潛熱通量對暖池起相噹作用，ENSO事件對暖池的彊度也有一定影響。【結論】控製實驗結果與“908”調查結果及歷史觀測數據吻閤較好，在流場與水糰驗證方麵效果理想。另外，敏感性實驗結果得齣瞭比前人更完善的海南島西岸上升流與暖池生成機製的觀點。
【목적】진일보탐토해남도서안적상승류여난지적특정급생성궤제。【방법】수선구건경위전면적공제모형（공제실험），포괄일평균풍장、열통량、측변계통량、조석강박이급하류경류등강박장，연후재공제실험기출상，구건무조석강박、무열통량강박、무계풍강박등3개민감성실험래분석3충강박인자대해남도서안상승류여난지적작용。【결과】하계해남도서안존재상승류，해상승류수열통량화조혼합공동공제，결핍기중임하일항상승류도회소실，이서남계풍기반작용。령외，해남도서안재동반년위난지공제，추계경위현저。동북계풍인기적수향혼합여잠열통량대난지기상당작용，ENSO사건대난지적강도야유일정영향。【결론】공제실험결과여“908”조사결과급역사관측수거문합교호，재류장여수단험증방면효과이상。령외，민감성실험결과득출료비전인경완선적해남도서안상승류여난지생성궤제적관점。
This study aims to further reveal the characteristics and formation mecha-nisms of the upwelling and warm pool off the western coast of Hainan Island.[Methods]The control model (control experiment)is firstly built,forced by the forcing of daily averaged wind and heat flux,river discharges,tidal harmonics,as well as the lateral flux.And then three sensi-tive experiments without tidal harmonics,heat flux or monsoon wind are constructed to analyze the effects of these three forcing factors on the upwelling and warm pool off the western coast of Hainan Island.[Results]The upwelling off the western coast of Hainan Island exists in sum-mer and will disappear without the forcing of heat flux or tidal mixing, indicating the combined dominant effect of heat flux and tidal mixing on this upwelling,whereas the southwesterly wind plays the negative role. Additionally, there is a warm pool off the western coast of Hainan Is-land in winter boreal, and the strength of warm pool is stronger in fall than that in winter.The vertical mixing induced by northeasterly wind has the considerable effect as the latent heat flux on the warm pool,and the events of ENSO also affect the strength of warm pool.[Conclusions]The results of control model are consistent with the in situ results from project "908" and his torical observation,including the current fieldand water mass validations,and new findingsabout the formation mechanisms of the up welling and warm pool off the western coast of Hainan Island are achieved based on the sensitiveexperiments.
