کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5427011 1397241 2018 6 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Small and large particle limits of single scattering albedo for homogeneous, spherical particles
کلمات کلیدی
Aerosol radiative forcing; Single scattering albedo; Rayleigh optics; Geometric optics; Complex refractive index; Mie theory;
موضوعات مرتبط
مهندسی و علوم پایه شیمی طیف سنجی
پیش نمایش صفحه اول مقاله
Small and large particle limits of single scattering albedo for homogeneous, spherical particles
چکیده انگلیسی

•The aerosol single scattering albedo is the dominant intensive particle parameter determining aerosol direct radiative forcing.•In the small particle limit, a novel generalized size parameter is introduced that unifies the single scattering albedo dependence on particle size parameter.•In the large particle limit, single scattering albedo becomes independent of particle size, depending only on the complex refractive index of the particle.

The aerosol single scattering albedo (SSA) is the dominant intensive particle parameter determining aerosols direct radiative forcing. For homogeneous spherical particles and a complex refractive index independent of wavelength, the SSA is solely dependent on size parameter (ratio of particle circumference and wavelength) and complex refractive index of the particle. Here, we explore this dependency for the small and large particle limits with size parameters much smaller and much larger than one.We show that in the small particle limit of Rayleigh scattering, a novel, generalized size parameter can be introduced that unifies the SSA dependence on particle size parameter independent of complex refractive index. In the large particle limit, SSA decreases with increasing product of imaginary part of the refractive index and size parameter, another generalized parameter, until this product becomes about one, then stays fairly constant until the imaginary part of the refractive index becomes comparable with the real part minus one. Beyond this point, particles start to acquire metallic character and SSA quickly increases with the imaginary part of the refractive index and approaches one.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 204, January 2018, Pages 250-255
نویسندگان
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