Inverting OII 83.4 nm dayglow profiles using Markov chain radiative transfer

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• 作者：George Geddes ; Ewan Douglas ; Susanna C. Finn ; Timothy Cook ; Supriya Chakrabarti
• 刊名：Journal of Geophysical Research: Space Physics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：121
• 期：11
• 页码：11,249-11,260
• 全文大小：1.3MB
• ISSN：2169-9402

文摘

Emission profiles of the resonantly scattered OII 83.4 nm triplet can in principle be used to estimate O⁺ density profiles in the F₂ region of the ionosphere. Given the emission source profile, solution of this inverse problem is possible but requires significant computation. The traditional Feautrier solution to the radiative transfer problem requires many iterations to converge, making it time consuming to compute. A Markov chain approach to the problem produces similar results by directly constructing a matrix that maps the source emission rate to an effective emission rate which includes scattering to all orders. The Markov chain approach presented here yields faster results and therefore can be used to perform the O⁺ density retrieval with higher resolution than would otherwise be possible.