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基于普林斯顿(POM)模式,采用不同的垂直混合方案并考虑太阳短波辐射的作用,对渤海、黄海夏季垂直热结构进行了数值试验。试验结果表明,夏季波浪混合控制着渤海、黄海上混合层的形成,加入波浪混合能明显改善陆架浅海的夏季温度垂直结构。太阳短波辐射对渤海、黄海夏季上层垂直热结构有一定的作用,研究夏季海洋上层垂直热结构应该包括太阳短波辐射的影响,特别是对于水深相对较深的黄海。 相似文献
95.
The observed currents in summer in the Bohai Sea 总被引:3,自引:0,他引:3
A harmonic method was used to analyze the tidal currents observed in summer at 11 stations made from 1996 to 2001 in the Bohai Sea, China. Data was compared among different instruments and intervals. Elliptic elements were calculated based on harmonic constants, of which vertical distributions of the maximum speed and rotation direction were discussed for understanding the characteristics of diurnal and semi-diurnal tidal current components. The results indicate that the maximum speed of M2 tidal current component is much larger than that of K1; the rotation direction of M2 tidal current constituent is clockwise in the central part of the Bohai Sea and in the Laizhou Bay, but anticlockwise in the Liaodong Bay and Bohai Bay. For K1 tidal current constituent, it is clockwise in the central Bohai Sea but anti-clockwise in the Laizhou Bay and Liaodong Bay. The tidal currents in most stations in the Bohai Sea were regular semidiurnal except for those in the central Bohai Sea, being irregular semidiurnal. 相似文献
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研究东海黑潮流区海域与黄海海域海水热含量在水平方向上的差异(以下简称经向热力差异Meridional Thermal Difference, MTD)对其西侧陆地(以南京为代表)气候变化的影响.利用WRF模式进行的数值模拟试验和对南京的实测结果分析表明,MTD的加强,使我国东部地区夏季风减弱,减弱了向东的水汽和热量输送,对陆地气候造成了比较大的影响.对SODA再分析资料的分析表明,自1979-2010年,7月份的MTD有增强的趋势;对南京气温实测资料的分析表明,对应东部海区MTD较强的年份,东部地区西南夏季风减弱,使南京气温异常偏低. 相似文献
98.
The mainstream depth of a return flow can be viewed as an intrinsic depth of horizontal convection. By using a theoretical
tube model combined with the application of the Maximum Entropy Production Principle (MaxEPP) in thermodynamics, the following
statements can be made. Under fixed external forcing, the system chooses a particular depth as the mainstream depth of its
return flow, the depth of which not only satisfies the maximum circulation rate and the maximum heat transport, but also satisfies
the maximum entropy production rate. A comparison between this intrinsic depth and the container height leads to the definition
of a relative partial and full-penetration pattern of the circulation. Moreover, this intrinsic depth is found to vary with
the external forcing; the regulation of this variation is related to the Modified Rayleigh number. 相似文献
99.
In this paper, we characterize the North Yellow Sea (NYS) water masses in summer by analyzing temperature and salinity data
surveyed in 2006. The Liaonan Coastal Water is characterized by low salinity westward and southward flow paths. The westward
path flows parallel to land, turns to the south, then to the southeast adjacent to the mouth of the Lüshun River, where it
mixes with other coastal water directly to the southwest. It becomes the main source of low salinity water in the deep water
area west of 123°E. The high-salinity Lubei Coastal Water is the remnant of the winter Lubei Coastal Water, which is located
mostly in a small area between Yantai and Weihai, and does not originate in the Bohai Sea Coastal Water. The two NYS zones
demarcated at 123°E have distinctly different temperature and salinity characteristics. There are two high-salinity centers
east of 123°E, whereas there is low-salinity water to the west whose temperature and salinity structures are complex, composed
of the coastal water south of Chengshantou, the Liaonan Coastal Water and the Bohai Sea Water. 相似文献
100.
基于Pedlosky(1987)的线性Muck边界层模型,引入一随纬向空间变化的侧摩擦系数AH(x),以探讨该参数对西边界流的强化结构的影响。结果发现,在风应力和内区解保持不变的情况下,适中线性变化的AH(x)会使西边界层内的向北急流和其靠内区一侧的逆流均得到加强。文中还给出摩擦应力、相对涡度及平均动能向涡动能的转化率在西边界层内的分布情况。 相似文献