💿🐜 Antkeeper source code
https://antkeeper.com
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75 lines
2.4 KiB
75 lines
2.4 KiB
/*
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* Copyright (C) 2021 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_PHYSICS_GAS_OZONE_HPP
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#define ANTKEEPER_PHYSICS_GAS_OZONE_HPP
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namespace physics {
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namespace gas {
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/// Ozone-related constants and functions.
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namespace ozone {
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/**
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* Cross section of ozone at wavelength 680nm and temperature 293K, in m-2/molecule.
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*
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* @see https://www.iup.uni-bremen.de/gruppen/molspec/databases/referencespectra/o3spectra2011/index.html
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*/
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template <class T>
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constexpr T cross_section_680nm_293k = T(1.36820899679147e-25);
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/**
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* Cross section of ozone at wavelength 550nm and temperature 293K, in m-2/molecule.
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*
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* @see https://www.iup.uni-bremen.de/gruppen/molspec/databases/referencespectra/o3spectra2011/index.html
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*/
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template <class T>
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constexpr T cross_section_550nm_293k = T(3.31405330400124e-25);
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/**
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* Cross section of ozone at wavelength 550nm and temperature 293K, in m-2/molecule.
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*
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* @see https://www.iup.uni-bremen.de/gruppen/molspec/databases/referencespectra/o3spectra2011/index.html
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*/
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template <class T>
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constexpr T cross_section_440nm_293k = T(1.36017282525383e-26);
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/**
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* Calculates an ozone absorption coefficient (wavelength-dependent).
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*
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* @param cross_section Ozone cross section of a wavelength, in m-2/molecule.
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* @param n Molecular number density of standard air, in molecules/m-3.
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* @param c Concentration of ozone in the atmosphere, unitless.
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*
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* @return Ozone absorption coefficient.
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*
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* @see https://skyrenderer.blogspot.com/2012/10/ozone-absorption.html
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*/
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template <class T>
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T absorption(T cross_section, T n, T c)
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{
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return cross_section * n * c;
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}
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} // namespace ozone
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} // namespace gas
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} // namespace physics
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#endif // ANTKEEPER_PHYSICS_GAS_OZONE_HPP
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