硫酸盐和碳黑气溶胶辐射效应的研究

A STUDY ON THE RADIATIVE EFFECT OF SULFATE AND SOOT AEROSOLS

该文对辐射方案中硫酸盐和碳黑气溶胶辐射效应进行了研究，估算了这两种气溶胶成分的辐射强迫．在气溶胶－辐射方案中考虑了：（１）具有不同尺度的硫酸盐和碳黑气溶胶在太阳辐射波长范围内的光学性质；（２）硫酸盐和碳黑气溶胶浓度的比例变化；（３）硫酸盐和碳黑气溶胶的混合形式．当硫酸盐气溶胶和碳黑气溶胶同时存在时，碳黑气溶胶的加热作用与硫酸盐气溶胶的冷却作用相叠加，会使大气顶的负辐射强迫量减少．减少的负辐射强迫量依赖于气溶胶的（相对）浓度和混合方式．

The parameterization of sulfate and soot aerosols in solar radiation scheme is studied, and the radiative forcing of the two kinds of aerosols is evaluated. In the aerosol radiative scheme, the following features are considered: (1) the optical parameters of sulfate and soot aerosols at various radius in solar wave range; (2) various concentration ratios of sulfate and soot aerosols and (3) difference in mixing patterns of sulfate and soot. Calculated results indicate that the negative radiative forcing on the top of atmosphere would decrease when soot warming effect is superimposed on sulfate cooling effect. The value of the decreased negative radiative forcing mainly depends on the sulfate/soot concentration ratio and the mixing pattern.