海洋学报(中文版)
海洋學報(中文版)
해양학보(중문판)
ACTA OCEANOLOGICA SINICA
2014年
3期
73-82
,共10页
张学峰%韩桂军%王东晓%李威%刘克修%马继瑞
張學峰%韓桂軍%王東曉%李威%劉剋脩%馬繼瑞
장학봉%한계군%왕동효%리위%류극수%마계서
黄海夏季温度结构%数值模拟%垂向混合参数化%波浪破碎
黃海夏季溫度結構%數值模擬%垂嚮混閤參數化%波浪破碎
황해하계온도결구%수치모의%수향혼합삼수화%파랑파쇄
parameterization%the Yellow Sea%POM%KPP%wave breaking
采用POMgcs(Princeton Ocean Model with generalized coordinate system )和MITgcm(MIT Gen-eral 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。
採用POMgcs(Princeton Ocean Model with generalized coordinate system )和MITgcm(MIT Gen-eral Circulation Model)兩箇海洋數值模式,研究瞭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種垂嚮混閤參數化方案對模擬黃海夏季上層溫度結構的影響。結果錶明,M-Y2.0和基于固壁近似假定的M-Y2.5方案低估瞭黃海上層的湍動能,模擬的黃海夏季溫度上混閤層的效果與實測相比均偏淺,不能夠很好地重構黃海夏季溫度的垂直結構。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層湍動能的輸入量,模擬的黃海夏季溫度上混閤層的效果與實測較為一緻。故推測黃海夏季的上層結構是受波浪混閤和流場剪切等物理機製共同調節的,若通過閤理的垂嚮混閤參數化方案將這些物理機製的作用加以體現,將會較真實地模擬和重構齣黃海夏季海溫上層結構。
채용POMgcs(Princeton Ocean Model with generalized coordinate system )화MITgcm(MIT Gen-eral Circulation Model)량개해양수치모식,연구료M-Y2.0、기우고벽근사가정적M-Y2.5、기우파랑파쇄작용적M-Y2.5화KPP 4충수향혼합삼수화방안대모의황해하계상층온도결구적영향。결과표명,M-Y2.0화기우고벽근사가정적M-Y2.5방안저고료황해상층적단동능,모의적황해하계온도상혼합층적효과여실측상비균편천,불능구흔호지중구황해하계온도적수직결구。이기우파랑파쇄작용적M-Y2.5화KPP방안균가이증가해양상층단동능적수입량,모의적황해하계온도상혼합층적효과여실측교위일치。고추측황해하계적상층결구시수파랑혼합화류장전절등물리궤제공동조절적,약통과합리적수향혼합삼수화방안장저사물리궤제적작용가이체현,장회교진실지모의화중구출황해하계해온상층결구。
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 .