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The importance of aerosols as agents of climate change has recently been highlighted. However, the magnitude of aerosol forcing by scattering of shortwave radiation (direct forcing) is still very uncertain even for the relatively well characterized sulfate aerosol. A potential source of uncertainty is in the model representation of aerosol optical(More)
Parameterizations of the shortwave optical properties of ammonium sulfate [(NH 4) 2 SO 4 ], ammonium bisulfate (NH 4 HSO 4), and sulfuric acid (H 2 SO 4) are provided as functions of relative humidity for high and low spectral resolution band models. The optical property parameterization is simple in form and in its dependence on relative humidity. The(More)
Introduction Direct aerosol radiative forcing (ARF) is important in understanding the impact of aerosols on earth's climate (Schimel et al. 1996). Global distribution of ARF is usually determined by first inverting satellite measurements to obtain aerosol properties such as optical depths, size distributions, and refractive indices, and then performing(More)
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