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The Solar Heating Effect of the Winter Aerosol in Lanzhou and Its Influence on Evolution of the Mixed Layer
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摘要: 综合考虑无云天气条件下，气溶胶和大气中各种吸收气体对太阳辐射的影响，建立了一个气溶胶大气的短波加热率模式，研究了兰州冬季气溶胶的短波加热效应。计算结果表明：气溶胶吸收太阳辐射而加热大气的作用是显著的。在上述工作的基础上，建立了一个完全闭合的混合层发展模式，利用数值方法探讨了气溶胶的辐射效应对混合层发展的影响。计算发现大气中气溶胶的增加会抑制混合层的发展，使混合层内的平均位温减小。Abstract: A shortwave heating rate model of the aerosol atmosphere is established in consideration of the effects of atmospheric aerosol and absorbing gases on the solar radiation under conditions of cloudlessness. The shortwave heating effect of the winter aerosol in Lanzhou is studied by using this model. The results show that the effects of the atmospheric aerosol on the solar heating of the atmosphere are significant. Based on the above work, a perfect closed mixed layer model is established and the radiative effects of aereosol on the evolution of the mixed layer are studied by using the numerical method. The results indicate that increasing of atmospheric aerosol would restrain the evolution of the mixed layer and decrease the mean potential temperature in the mixed layer.
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Keywords:
- Aerosol /
- Shortwave heating rate /
- Mixed layer /
- Mean potential temperature
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