Decadal and Annual Variations in Meteoric Flux From Ulysses, Wind, and SOFIE Observations

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dc.contributor.authorHervig, Mark E.en
dc.contributor.authorMalaspina, Daviden
dc.contributor.authorSterken, Veerleen
dc.contributor.authorWilson, Lynn B. IIIen
dc.contributor.authorHunziker, Silvanen
dc.contributor.authorBailey, Scott M.en
dc.date.accessioned2023-05-04T14:53:17Zen
dc.date.available2023-05-04T14:53:17Zen
dc.date.issued2022-10en
dc.description.abstractOur solar system is filled with meteoric particles, or cosmic dust, which is either interplanetary or interstellar in origin. Interstellar dust (ISD) enters the heliosphere due to the relative motion of the sun and the interstellar flow. Interplanetary dust (IPD) comes primarily from asteroid collisions or comet sublimation, and comprises the bulk of material entering Earth's atmosphere. This study examines variations in ISD and the IPD flux at Earth using observations from three different satellite techniques. First are size-resolved in situ meteoroid detections by the Ulysses spacecraft, and second are in situ indirect dust observations by Wind. Third are measurements of meteoric smoke in the mesosphere by the Solar Occultation For Ice Experiment (SOFIE). Wind and Ulysses observations are sorted into the interstellar and interplanetary components. Wind ISD show the anticipated correlation to the 22-year solar magnetic cycle, and are consistent with model predictions of ISD. Because Wind does not discriminate particle size, the IPD measurements were interpreted using meteoric mass distributions from Ulysses observations and from different models. Wind observations during 2007-2020 indicate a total meteoric influx at Earth of 22 metric tons per day (t d(-1)), in reasonable agreement with long-term averages from SOFIE (25 t d(-1)) and Ulysses (32 t d(-1)). The SOFIE and Wind influx time series both show an unexpected correlation to the 22-year solar cycle. This relationship could be an artifact, or may indicate that IPD responds to changes in the solar magnetic field.en
dc.description.notesThis work was funded in part by the AIM mission through NASA contract NAS5-03132. V. J. Sterken received funding from the European Union's Horizon 2020 research and innovation program under Grant agreement N851544. L. B. Wilson was partially supported by Wind MO&DA funds.en
dc.description.sponsorshipAIM mission through NASA [NAS5-03132]; European Union [N851544]; Wind MODA fundsen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1029/2022JA030749en
dc.identifier.eissn2169-9402en
dc.identifier.issue10en
dc.identifier.othere2022JA030749en
dc.identifier.urihttp://hdl.handle.net/10919/114909en
dc.identifier.volume127en
dc.language.isoenen
dc.publisherAmerican Geophysical Unionen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectmeteoric influxen
dc.subjectSOFIEen
dc.subjectWinden
dc.subjectUlyssesen
dc.subjectinterstellar dusten
dc.subjectmeteoric smokeen
dc.titleDecadal and Annual Variations in Meteoric Flux From Ulysses, Wind, and SOFIE Observationsen
dc.title.serialJournal of Geophysical Research-Space Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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