Modeling MSTIDs produced by gravity waves with parameters obtained from all-sky imager observations and comparisons to incoherent scatter radar observations

Modeling MSTIDs produced by gravity waves with parameters obtained from all-sky imager observations and comparisons to incoherent scatter radar observations | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 4 March 2025 V1 Latest version Share on Modeling MSTIDs produced by gravity waves with parameters obtained from all-sky imager observations and comparisons to incoherent scatter radar observations Authors : Harold K Knight 0000-0002-4026-7426 [email protected] , Phil G. Richards 0000-0002-7774-7079 , Carlos Martinis 0000-0002-1085-7871 , and Larisa P. Goncharenko 0000-0001-9031-7439 Authors Info & Affiliations https://doi.org/10.22541/au.174111557.78598941/v1 Published Journal of Geophysical Research: Space Physics Version of record Peer review timeline 288 views 142 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Hypotheses concerning processes related to medium-scale traveling ionospheric disturbances (MSTIDs) are investigated with the application of models and the analysis of observational data. Wave-packet parameters for MSTIDs from 2011 through 2022 are obtained from Millstone Hill (MH) OI 6300Å all-sky imager (ASI) observations during periods for which concurrent MH incoherent scatter radar (ISR) observations are available. A combination of a numerical multi-layer (NML) model for gravity waves (GW) in the thermosphere with the Field-Line Interhemispheric Plasma (FLIP) model for ionospheric processes and upper-atmospheric emissions is applied to generate differential electron-density values, which are compared with ISR-observed perturbation electron-density values. A detailed comparison is made between model-generated and ISR-observed electron density for two cases, and the comparisons show notably good agreement. Twelve other MSTID cases are also described, giving a total of fourteen cases. The results confirm that some nighttime MSTIDs at midlatitudes directly correspond to local GWs. They also suggest that some MSTIDs occurring over MH primarily consist of plasma fluctuations without corresponding local neutral fluctuations and that such MSTIDs are more common during winter months. The phase relationship between electron density and neutral vertical velocity variations is examined for two cases. Additionally, the hypothesis that standard thermospheric dynamic molecular viscosity values should be reduced is evaluated, and it is found that this is not supported by the results. Supplementary Material File (1026193_0_merged_1740873880.pdf) Download 1.38 MB File (model mstid gw asi isr.docx) Download 3.14 MB Information & Authors Information Version history V1 Version 1 04 March 2025 Peer review timeline Published Journal of Geophysical Research: Space Physics Version of Record 2 Aug 2025 Published Copyright This work is licensed under a Creative Commons Attribution 4.0 International License Keywords atmospheric gravity waves atmospheric sciences geophysics ionospheric f region medium-scale traveling ionospheric disturbances numerical multilayer method upper thermosphere Authors Affiliations Harold K Knight 0000-0002-4026-7426 [email protected] Computational Physics, Inc. View all articles by this author Phil G. Richards 0000-0002-7774-7079 George Mason University View all articles by this author Carlos Martinis 0000-0002-1085-7871 Boston University View all articles by this author Larisa P. Goncharenko 0000-0001-9031-7439 Massachusetts Institute of Technology Haystack Observatory View all articles by this author Funding Information National Science Foundation 2130749 Harold Knight Metrics & Citations Metrics Article Usage 288 views 142 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Harold K Knight, Phil G. Richards, Carlos Martinis, et al. Modeling MSTIDs produced by gravity waves with parameters obtained from all-sky imager observations and comparisons to incoherent scatter radar observations. Authorea . 04 March 2025. DOI: https://doi.org/10.22541/au.174111557.78598941/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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