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The evolution of energy, energy flux and modal structure of the internal tides(ITs) in the northeastern South China Sea is examined using the measurements at two moorings along a cross-slope section from the deep continental slope to the shallow continental shelf. The energy of both diurnal and semidiurnal ITs clearly shows a～14-day spring-neap cycle, but their phases lag that of barotropic tides, indicating that ITs are not generated on the continental slope. Observations of internal tidal energy flux suggest that they may be generated at the Luzon Strait and propagate west-northwest to the continental slope in the northwestern SCS. Because the continental slope is critical-supercritical with respect to diurnal ITs, about 4.6 kJ/m~2 of the incident energy and 8.7 kW/m of energy flux of diurnal ITs are reduced from the continental slope to the continental shelf. In contrast, the semidiurnal internal tides enter the shelf because of the sub-critical topography with respect to semidiurnal ITs.From the continental slope to the shelf, the vertical structure of diurnal ITs shows significant variation, with dominant Mode 1 on the deep slope and dominant higher modes on the shelf. On the contrary, the vertical structure of the semidiurnal ITs is stable, with dominant Mode 1. 相似文献
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In this paper, the effects of clouds with different albedos at different altitudes as underlying surface on the photodissociation coefficients of oxygen and ozone in the turbid atmosphere, where the multi-scattering of molecules and aerosols is considered, have been investigated. In addition, the effects of doubling the ozone concentration in the tropopausc due to the atmospheric motion on the photodissociation coefficients of ozone and oxygen are also studied. 相似文献
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云和辐射 （II）:环流模式中的云和云辐射参数化 总被引：1，自引：2，他引：1
这一部分论述了在环流模式中应用的各种云参数化和云辐射参数化方案。云参数化分为云的诊断和预报二大类，云辐射参数化则包活云光学性质的参数化和云整体辐射性质（反射率、透过率、吸收率和发射率）的参数化。 相似文献
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火山气溶胶的辐射影响 总被引：2，自引：1，他引：2
本文应用辐射传输计算研究了火山气溶胶,特别是大的火山爆发后短时期及火山周围地区内的火山气溶胶,对到达地面的向下的总的太阳辐射通量、行星反照率及大气加热率的可能影响. 相似文献
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这里提出了一个建立在二流近似基础上的宽带太阳辐射传输计算模式。整个从0.2—3.58μm的太阳光谱区分成三个宽光谱间隔,各波段上的宽带等效光学厚度和单次散射反照率由已知的大气参数直接算出。在各波段上,二种以上大气成分重迭的辐射作用也得到适当的考虑。在考虑云的辐射作用时,云的单次散射反照率和后向散射参数是预先给定的,而云的光学厚度则根据云中液态水含量来算出。 相似文献
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本文给出了考虑分子和气溶胶多次散射的浑浊大气中,不同高度和不同反照率的云作为下垫面时对臭氧及氧气光离化系数的影响,以及由于大气运动造成对流层顶臭氧浓度加倍而引起的臭氧及氧气光离化系数的变化. 相似文献
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本文利用Mie散射理论计算了不同复折射指数不同谱分布几种气溶胶对Dobson分光光度计和宽带滤光片光度计臭氧总量测值的影响。 相似文献