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首页> 外文期刊>Journal of Physical Oceanography >Improved Oceanic Cool-Skin Corrections Using a Refined Solar Penetration Model
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Improved Oceanic Cool-Skin Corrections Using a Refined Solar Penetration Model

机译：使用改进的太阳穿透模型改进的海洋冷皮校正

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The oceanic near-surface temperature profile must be accurately characterized to enable precise determination of air-sea heat exchange and satellite retrievals of sea surface temperature. An improved solar transmission parameterization is integrated into existing models for the oceanic warm layer and cool skin within the Tropical Ocean and Global Atmosphere Coupled Ocean-Atmosphere Response Experiment (TOGA COARE) bulk flux model to improve the accuracy of predictions of the temperature profile and corresponding heat flux components. Application of the revised bulk flux model to data from 12 diverse cruises demonstrates that the improved parameterization results in significant changes to the predicted cool-skin effect and latent heat fluxes at low wind speeds with high solar radiation due to reduced absorption of solar radiation just below the surface. Daytime skin-layer cooling is predicted to increase by 0.03 K on average but by more than 0.25 K for winds below 1 m s~(-1) and surface irradiance exceeding 900 W m~(-2). Predicted changes to the warm-layer correction were smaller but exceeded 0.1 K below 1 m s~(-1). Average latent and sensible heat fluxes changed by 1 W m~(-2), but the latent flux decreased by 5 W m~(-2) near winds of 0.5 m s~(-1) and surface irradiance of 950 W m~(-2). Comparison with direct observations of skin-layer cooling demonstrated, in particular, that use of the improved solar transmission model resulted in the reduction of previous systematic overestimates of diurnal skin-layer warming. Similar results can be achieved using a simplified treatment of solar absorption with an appropriate estimate of the fraction of incident solar radiation absorbed within the skin layer.
机译：必须精确表征海洋近地表温度剖面，以便能够精确确定海气热交换和卫星对海表温度的取回。将改进的太阳能传输参数化功能集成到现有模型中，以用于热带和全球大气耦合海洋-大气响应实验（TOGA COARE）整体通量模型中的海洋暖层和凉皮的模型，以提高温度剖面和相应预报的准确性热通量成分。将修正的总通量模型应用于来自12个不同航次的数据表明，改进的参数化导致低风速下具有高太阳辐射的预计冷皮效应和潜热通量发生了显着变化，这是因为太阳辐射的吸收降低了表面。预计白天的皮肤层冷却平均会增加0.03 K，但对于1 m s〜（-1）以下的风和超过900 W m〜（-2）的表面辐照度，则平均增加0.25 K以上。预测的暖层校正变化较小，但在1 m s〜（-1）以下超过0.1K。平均潜热和显热通量变化了1 W m〜（-2），但在风速为0.5 ms〜（-1）和表面辐照度为950 W m〜（-）时，潜热通量下降了5 W m〜（-2）。 -2）。与直接观察皮肤层冷却的比较表明，特别是使用改进的太阳能传输模型导致减少了以前对白天皮肤层变暖的系统高估。使用对太阳吸收的简化处理以及对皮肤层内吸收的入射太阳辐射的分数的适当估计，可以实现类似的结果。

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