垂向混合参数化方案对模拟黄海夏季上层温度结构的影响研究  

The effect of the vertical mixing parameterization on modeling the summer structure of temperature in the Yellow Sea

作　　者：张学峰[1,2] 韩桂军[1] 王东晓[2] 李威[1] 刘克修[1] 马继瑞[1] 

机构地区：[1]国家海洋信息中心,天津300171 [2]中国科学院南海海洋研究所,广东广州510301

出　　处：《海洋学报》2014年第3期73-82,共10页

基　　金：国家973计划课题(2013CB430304);国家自然科学基金项目(41030854;41106005;41176003;41206178);国家863计划课题(2013AA09A505);国家科技支撑计划资助(2011BAC03B02-01-04)

摘　　要：采用POMgcs(Princeton Ocean Model with generalized coordinate system)和MITgcm(MIT General Circulation Model)两个海洋数值模式,研究了M-Y2.0、基于固壁近似假定的M-Y2.5、基于波浪破碎作用的M-Y2.5和KPP 4种垂向混合参数化方案对模拟黄海夏季上层温度结构的影响。结果表明,M-Y2.0和基于固壁近似假定的M-Y2.5方案低估了黄海上层的湍动能,模拟的黄海夏季温度上混合层的效果与实测相比均偏浅,不能够很好地重构黄海夏季温度的垂直结构。而基于波浪破碎作用的M-Y2.5和KPP方案均可以增加海洋上层湍动能的输入量,模拟的黄海夏季温度上混合层的效果与实测较为一致。故推测黄海夏季的上层结构是受波浪混合和流场剪切等物理机制共同调节的,若通过合理的垂向混合参数化方案将这些物理机制的作用加以体现,将会较真实地模拟和重构出黄海夏季海温上层结构。Four vertical mixing parameterization schemes ,including M-Y2.0 ,M-Y2.5 based on wall layer proximity , M-Y2.5 based on surface wave breaking and KPP are applied to simulate the upper structure of temperature in the Yellow Sea in summer ,using Princeton Ocean Model with generalized coordinate system （POMgcs） and MIT Gen-eral Circulation Model（MITgcm） .It shows that the depth of the upper mixed layer simulated by M-Y2.0 and M-Y2.5 based on wall layer proximity are both too shallow comparing with the observation .The two schemes men-tioned above can hardly well simulate the summer structure of temperature in the Yellow Sea ,while both the schemes of the M-Y2.5 based on surface wave breaking and KPP have favorable capability to reconstruct the sum-mer upper mixing layer of temperature in the Yellow Sea .So we suggest that surface wave-induced mixing and flow shear modulate jointly the upper layer structure in the Yellow sea .The upper layer structure of temperature is able to be well simulated through utilizing the rational schemes of vertical mixing parameterization that can embody the effect of the physics processes mentioned above .

关 键 词：黄海夏季温度结构 数值模拟 垂向混合参数化 波浪破碎 

分 类 号：P731.2[天文地球—海洋科学]