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dc.contributor.author Xiong, Chao
dc.contributor.author Zhou, Yun-Liang
dc.contributor.author Lühr, Hermann
dc.contributor.author Ma, Shu-Ying
dc.date.accessioned 2018-11-20T18:55:04Z
dc.date.available 2018-11-20T18:55:04Z
dc.date.issued 2016-09-02
dc.identifier.citation Xiong, C., Zhou, Y.-L., Lühr, H., & Ma, S.-Y. (2016). Diurnal evolution of the F region electron density local time gradient at low and middle latitudes resolved by the Swarm constellation.==$Journal of Geophysical Research: Space Physics, 121$==(9), 9075-9089. https://doi.org/10.1002/2016JA023034 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3744
dc.description.abstract In this study we have provided new insights into the local time gradient of F region electron density (ΔNe) derived from the lower pair of Swarm satellites flying side by side. Our result shows that the electron density (Ne) increase starts just at sunrise, around 06:00 LT, simultaneously at low and middle latitudes due to the increased photoionization. At equatorial latitudes the increase in electron density gets even steeper after 07:00 LT, and the steepest increase of electron density (about 3 · 1010 m−3 within 6 min) occurs around 09:00 LT. We suggest that the upward vertical plasma drift in connection with the buildup of the equatorial fountain effect plays a major role. We also found that the local time variations of the equatorial ionization anomaly (EIA) crest electron density during daytime are similar to the respective evolutions at the equator, but about 1–2 h delayed. We relate this delay to the response time between the equatorial electric field and the buildup of the plasma fountain. At equinox months a fast decrease of the F region electron density is seen at the EIA trough region during the prereversal enhancement, while an increase is found meanwhile at crest regions. Afterward, a fast decrease of the EIA crest electron density occurs between 19:00 and 23:00 LT, with seasonal dependence. The local time gradient between Swarm A and C shows also prominent longitudinal wave‐4 pattern around August months, and the phase of DE3 in ΔNe is found to be delayed by 6 h compared to that in Ne. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-9380
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Electron density gradient es_ES
dc.subject Diurnal evolution es_ES
dc.subject F region electron density es_ES
dc.subject Swarm es_ES
dc.title Diurnal evolution of the F region electron density local time gradient at low and middle latitudes resolved by the Swarm constellation es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Journal of Geophysical Research: Space Physics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1002/2016JA023034 es_ES

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