对 流层气溶胶在不同尺度上影响着空气质量（人类健康）、能见度、化学过程和辐射过程。由于它本身的复杂性和人们对它理解的不充分性，气溶胶－云微物理－辐射 －降水和气候间的相互作用被视为模拟预测未来气候变化的最大不确定性因素之一。该研究结合观测和区域模式的结果说明，大量存在于智力沿海层积云中人为产生 的硫酸盐气溶胶会导致云滴数增加但是云滴半径变小，净效应是增加了云反照率从而增强了太阳云辐射强迫，进而导致了云盖下海洋表面的辐射冷却。本文还讨论在 当前的海气耦合环流模式中由于云和气溶胶相互作用的影响所带来的云辐射强迫和海洋表面温度的模拟偏差。

Tropospheric aerosols affect air quality (human health), visibility, chemistry and radiation/climate, ranged from small to global scales. Because of their complexity and inadequate understanding, the aerosols-cloud microphysics-radiation-precipitation-climate interactions are recognized as one of the largest uncertainties in using models to project future climate changes. The present talk used a regional climate model together with observations to illustrate that the anthropogenic sulfate aerosols along the coast of Chile where extensive and persistent stratocumulus clouds reside may increase the cloud droplet number but with smaller size. The net effect is to increase solar cloud radiative forcing associated with an increase in cloud albedo. A radiative cooling of the sea surface underneath the cloud deck is implicated. These results will be discussed within the context of simulation biases in both the cloud radiative forcing and sea surface temperature existed in current coupled atmosphere-ocean general circulation models.