globalchange  > 气候减缓与适应
DOI: 10.1002/2014GL059683
论文题名:
Predictions of electron temperatures in the Mars ionosphere and their effects on electron densities
作者: Withers P.; Fallows K.; Matta M.
刊名: Geophysical Research Letters
ISSN: 0094-10152
EISSN: 1944-9883
出版年: 2014
卷: 41, 期:8
起始页码: 2681
结束页码: 2686
语种: 英语
英文关键词: Energetics ; Ionosphere ; Mars
Scopus关键词: Carrier concentration ; Electron density measurement ; Electrons ; Forecasting ; Ionosphere ; Ionospheric measurement ; Analytic modeling ; Diurnal variation ; Electron production rate ; Energetics ; Mars ; Neutral temperature ; On-electron density ; Solar zenith angle ; Electron temperature ; diurnal variation ; electron density ; energetics ; ionosphere ; Martian atmosphere ; numerical model ; prediction ; temperature profile
英文摘要: Observations of peak electron densities in the Mars ionosphere are well fit by a simplistic theory that assumes the electron temperature, Te, at the peak remains constant as solar zenith angle, χ, changes. However, Te ought to vary with both altitude and χ. Here we use an existing numerical model of ionospheric energetics, which includes both vertical and diurnal variations in temperatures, to predict that Te at the ionospheric peak is relatively independent of χ. This model accurately predicts the observed dependence of peak electron density on χ, whereas predictions using Viking-based electron temperatures that are held constant with time do not. A simplified analytic model is developed to interpret these results further. It predicts that the difference between electron and neutral temperatures is proportional to the ratio of electron heating rate to electron production rate and proportional to the square root of solar irradiance. Key Points Electron temperatures at the main ionospheric peak are independent of SZA This explains observed peak density-SZA relationship Dependence of electron temperature on several factors is predicted ©2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899039410&doi=10.1002%2f2014GL059683&partnerID=40&md5=04dcee5f5f8b17942b7dce7ca55a66d8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7416
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作者单位: Department of Astronomy, Boston University, Boston, MA, United States

Recommended Citation:
Withers P.,Fallows K.,Matta M.. Predictions of electron temperatures in the Mars ionosphere and their effects on electron densities[J]. Geophysical Research Letters,2014-01-01,41(8).
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