کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9599029 | 1397438 | 2005 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multiple elastic and inelastic light scattering in the Earth's atmosphere: a doubling-adding method to include rotational Raman scattering by air
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Multiple elastic and inelastic light scattering in the Earth's atmosphere: a doubling-adding method to include rotational Raman scattering by air Multiple elastic and inelastic light scattering in the Earth's atmosphere: a doubling-adding method to include rotational Raman scattering by air](/preview/png/9599029.png)
چکیده انگلیسی
An accurate description of multiple scattering is essential in atmospheric radiative transfer modeling of ultraviolet and visible light in the Earth's atmosphere. Part of this multiply scattered radiation is inelastically scattered due to rotational Raman scattering by air. The distribution of the inelastically scattered light leads to filling-in of Fraunhofer lines, and to filling-in of absorption features of atmospheric constituents. This complicates the interpretation of satellite measurements of backscattered sunlight. Several atmospheric radiative transfer models consider multiple elastic scattering, but allow only one order of inelastic Raman scattering. In this paper, we investigate the validity of this approximation by taking also multiple inelastic scattering into account. We present an extension of the doubling-adding method which for the first time accounts for both multiple elastic and multiple inelastic scattering of light. Numerical implementation of this method shows that, in simulations of reflected light by a model atmosphere, multiple inelastic scattering contributes about 0.5% to the total intensity around 325nm and about 0.2% around 395nm. At the center of the Fraunhofer lines and in the Huggins ozone absorption bands this contribution is generally larger. For a simulated measurement by a typical space-borne spectrometer with 0.2nm instrumental resolution, the observed contribution is about 0.6% at the Ca II K and H lines, located at 393.48 and 396.97nm, respectively. At the 325nm Huggins ozone absorption feature this contribution due to multiple inelastic scattering is also about 0.6%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 95, Issue 3, 15 October 2005, Pages 309-330
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 95, Issue 3, 15 October 2005, Pages 309-330
نویسندگان
Rutger van Deelen, Jochen Landgraf, Ilse Aben,