Saharan dust outbreaks frequently propagate westward over the Atlantic Ocean; accurate quantification of the dust aerosol scattering and absorption effect on the surface radiative fluxes (SRF) is fundamental to understanding critical climate feedbacks. By exploiting large sets of measurements from many ship campaigns in conjunction with reanalysis products, this study characterizes the sensitivity of the SRF and skin Sea‐Surface Temperature (SST_skin) to the Saharan dust aerosols using models of the atmospheric radiative transfer and thermal skin effect. Saharan dust outbreaks can decrease the surface shortwave radiation up to 190 W/m², and an analysis of the corresponding SST_skin changes using a thermal skin model suggests dust‐induced cooling effects as large as −0.24 K during daytime and a warming effect of up of 0.06 K during daytime and nighttime respectively. Greater physical insight into the radiative transfer through an aerosol‐burdened atmosphere will substantially improve the predictive capabilities of weather and climate studies on a regional basis.

中文翻译：

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撒哈拉沙尘对北大西洋海表皮温度的影响

撒哈拉粉尘暴发经常向西传播到整个大西洋。准确量化粉尘气溶胶在表面辐射通量（SRF）上的散射和吸收效应是了解关键气候反馈的基础。通过利用来自许多船舶战役的大量测量结果以及再分析产品，该研究使用大气辐射传递和热皮肤效应模型表征了SRF和皮肤海表温度（SST_皮肤）对撒哈拉尘埃气溶胶的敏感性。 。撒哈拉粉尘暴发可将表面短波辐射降低至190 W / m ²，并对相应的SST_皮肤进行分析使用热蒙皮模型进行的更改表明，在白天，粉尘导致的降温效果高达−0.24 K，在白天和夜间，降温效果分别高达0.06K。通过气溶胶负重大气对辐射传递的更深入的物理洞察将大大改善区域范围内天气和气候研究的预测能力。