气候变化领域集成服务门户(CCPortal): Analytical Investigation of the Reaction-Diffusion Waves in the Mesopause Photochemistry

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DOI	10.1029/2020JD033480
	Analytical Investigation of the Reaction-Diffusion Waves in the Mesopause Photochemistry
	Kulikov M.Y.; Belikovich M.V.; Feigin A.M.
发表日期	2020
ISSN	2169897X
卷号	125 期号:22
英文摘要	The mechanism of the generation of reaction-diffusion waves in the mesopause region (80–90 km) has been studied analytically. These waves are the propagating phase fronts arising in the oscillations of O, O3, H, OH, and HO2 concentrations. They appear in the presence of horizontal eddy diffusion in zonal direction when mesospheric photochemistry responds subharmonically (with a period of 2 days) to diurnal variations of solar radiation. The photochemical system in the mesopause region is a nonlinear oscillator which can be roughly described by a system of two differential nonautonomous equations with power law nonlinearity which was derived in our earlier papers. To model the wave propagation, we have considered a continuous chain of oscillators with diffusion coupling and with the phase of external periodic forcing depending linearly on spatial coordinates. It was found that the reaction-diffusion waves are caused by specific “wind” type transport appearing in the equations for the amplitudes of 2-day photochemical oscillations of O and H concentrations due to the zonal inhomogeneity of the external forcing. The obtained expression for the wave propagation velocity fully confirmed the earlier numerical results that the magnitude of the velocity is proportional to the diffusion coefficient and the gradient of the external forcing phase. The wave propagation direction is determined by the definite phase relations specified by internal parameters of the system only. ©2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185656
作者单位	Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russian Federation
推荐引用方式 GB/T 7714	Kulikov M.Y.,Belikovich M.V.,Feigin A.M.. Analytical Investigation of the Reaction-Diffusion Waves in the Mesopause Photochemistry[J],2020,125(22).
APA	Kulikov M.Y.,Belikovich M.V.,&Feigin A.M..(2020).Analytical Investigation of the Reaction-Diffusion Waves in the Mesopause Photochemistry.Journal of Geophysical Research: Atmospheres,125(22).
MLA	Kulikov M.Y.,et al."Analytical Investigation of the Reaction-Diffusion Waves in the Mesopause Photochemistry".Journal of Geophysical Research: Atmospheres 125.22(2020).