Modeling the global micrometeor input function in the upper atmosphere observed by high power and large aperture radars

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dc.contributor.authorJanches, Diego
dc.contributor.authorHeinselman, Craig J.
dc.contributor.authorChau Chong Shing, Jorge Luis
dc.contributor.authorChandran, Amal
dc.contributor.authorWoodman Pollitt, Ronald Francisco
dc.date.accessioned2018-07-16T16:15:06Z
dc.date.available2018-07-16T16:15:06Z
dc.date.issued2006-07-26
dc.description.abstractWe report initial results of an effort to model the diurnal and seasonal variability of the meteor rate detected by high power and large aperture (HPLA) radars. The model uses Monte Carlo simulation techniques and at present assumes that most of the detected particles originate from three radiant distributions with the most dominant concentrated around the Earth's apex. The other two sources are centered 80° in ecliptic longitude to each side of the apex and are commonly known as helion and antihelion. To reproduce the measurements, the apex source flux was set to provide 70% of the total number of particles while the other 30% is provided by the combined contribution of the two remaining sources. The results of the model are in excellent agreement with observed diurnal curves obtained at different seasons and locations using the 430 MHz Arecibo radar in Puerto Rico, the 50 MHz Jicamarca radar in Perú, and the 1.29 GHz Sondrestrom radar in Greenland. To obtain agreement with the observed diurnal and seasonal variability of the meteor rate, an empirical atmospheric filtering effect was introduced in the simulation which prevents meteors with low-elevation radiants (<21) from being detected by the radars at mesospheric altitudes. The filtering effect is probably produced by a combination of factors related to the interaction of the meteor with the air molecules such as electron production and/or the ablation at higher altitudes. On the basis of these results we calculate the micrometeor global, diurnal, and seasonal input in the upper atmosphere.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationJanches, D., Heinselman, C. J., Chau, J. L., Chandran, A., & Woodman, R. F. (2006). Modeling the global micrometeor input function in the upper atmosphere observed by high power and large aperture radars.==$Journal of Geophysical Research: Space Physics, 111$==(A7), A07317. https://doi.org/10.1029/2006JA011628es_ES
dc.identifier.doihttps://doi.org/10.1029/2006JA011628es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Geophysical Research: Space Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1886
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:2169-9380
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectMeteor radares_ES
dc.subjectMeteoric influxes_ES
dc.subjectIonospherees_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleModeling the global micrometeor input function in the upper atmosphere observed by high power and large aperture radarses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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