Correction of B2bot for NeQuick during low solar activity at Hainan station |
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| Authors: | SG Wang JK Shi X Wang GJ Wang HF Zhang GM Chen |
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| Institution: | 1. State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing, China;2. Beijing Institute of Applied Meteorology, Beijing 100029, China;3. Beijing Aviation Meteorological Institute, Beijing 100085, China |
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| Abstract: | This work is a continuation of the previous article and it focuses on low solar activity and modeling effort. NeQuick model uses Epstein layer formalism to model each part of the profile. We study the diurnal and seasonal variations of B2bot, ΔB2 (B2best − B2NeQuick2) and R (B2best/B2NeQuick 2) at Hainan station during low solar activity. The results show it is possible to improve the B2bot parameter of the NeQuick model at that region during low solar activity. Then, we use a function ?(t) with LT in different seasons to correct the B2bot formula of NeQuick 2. The correction shows that (1) By the correction formula, the B2bot of NeQuick is improved. The maximum standard deviation is improved for 9 km. (2) The correction formula is more effective in summer than in equinox and winter and performs better during early morning hours than during the rest of the day. |
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| Keywords: | NeQuick Solar activity F2 peak parameters Fitting function |
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