View in EDS

Meteor observations in the northern polar MLT region: A comprehensive long-term analysis.

Saved in:
Bibliographic Details
Title: Meteor observations in the northern polar MLT region: A comprehensive long-term analysis.
Authors: Portel, Vaishali1 (AUTHOR), Kishore Kumar, G.1 (AUTHOR) kishoreg@uohyd.ac.in, Nozawa, Satonori2 (AUTHOR), Tsutsumi, M.3 (AUTHOR), Johnsen, M.G.4 (AUTHOR), Gulbrandsen, Njål4 (AUTHOR)
Source: Advances in Space Research. Jun2026, Vol. 77 Issue 12, p12364-12377. 14p.
Subjects: Meteors, Geomagnetic variations, Statistical measurement, Arctic climate, Diurnal variations in meteorology
Geographic Terms: Svalbard (Norway)
Abstract: The diurnal, seasonal, and interannual variability of the meteor flux, meteor peak height (MPH) and the full width at half maximum (FWHM) of the meteor height distribution were investigated using meteor radar observations spanning 2001–2022 at three northern polar sites: Svalbard (NSMR- 78.17⁰N, 15.99⁰E), Tromsø (NTMR- 69.59⁰N, 19.22⁰E), and Alta (NAMR- 69.97⁰N, 23.29⁰E). All three parameters (meteor flux, MPH and FWHM) exhibit clear diurnal and seasonal variations. The observed diurnal variability in all three parameters is strongly modulated by both background atmospheric conditions and geomagnetic activity, exhibiting clear latitudinal differences. On seasonal scales, meteor flux peaks during summer, particularly in July. MPH shows both annual modulation, most evident over NSMR, and a significant semiannual component with maxima during spring and autumn. FWHM shows lower values in summer and higher values in winter, consistent with mesospheric temperature variations. Comparisons with Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and COSPAR International Reference Atmosphere-1986 (CIRA86) temperature data demonstrate good agreement, supporting the use of FWHM as a temperature proxy on seasonal scales. Interannual analysis reveals a clear inverse relationship between meteor flux and solar activity at NSMR, whereas the correlation is weaker at NTMR, likely reflecting enhanced geomagnetic influence in the auroral zone. MPH remains relatively stable over the solar cycle, while FWHM exhibits a weak positive solar cycle dependence at NTMR. The meteor flux exhibits a positive long-term trend at NSMR, but a decreasing trend at NTMR, whereas long-term trends in both MPH and FWHM are negligible at both stations. [ABSTRACT FROM AUTHOR]
Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 194127356
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Meteor observations in the northern polar MLT region: A comprehensive long-term analysis.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Portel%2C+Vaishali%22">Portel, Vaishali</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kishore+Kumar%2C+G%2E%22">Kishore Kumar, G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kishoreg@uohyd.ac.in</i><br /><searchLink fieldCode="AR" term="%22Nozawa%2C+Satonori%22">Nozawa, Satonori</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tsutsumi%2C+M%2E%22">Tsutsumi, M.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Johnsen%2C+M%2EG%2E%22">Johnsen, M.G.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gulbrandsen%2C+Njål%22">Gulbrandsen, Njål</searchLink><relatesTo>4</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Advances+in+Space+Research%22">Advances in Space Research</searchLink>. Jun2026, Vol. 77 Issue 12, p12364-12377. 14p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Meteors%22">Meteors</searchLink><br /><searchLink fieldCode="DE" term="%22Geomagnetic+variations%22">Geomagnetic variations</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+measurement%22">Statistical measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Arctic+climate%22">Arctic climate</searchLink><br /><searchLink fieldCode="DE" term="%22Diurnal+variations+in+meteorology%22">Diurnal variations in meteorology</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Svalbard+%28Norway%29%22">Svalbard (Norway)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The diurnal, seasonal, and interannual variability of the meteor flux, meteor peak height (MPH) and the full width at half maximum (FWHM) of the meteor height distribution were investigated using meteor radar observations spanning 2001–2022 at three northern polar sites: Svalbard (NSMR- 78.17⁰N, 15.99⁰E), Tromsø (NTMR- 69.59⁰N, 19.22⁰E), and Alta (NAMR- 69.97⁰N, 23.29⁰E). All three parameters (meteor flux, MPH and FWHM) exhibit clear diurnal and seasonal variations. The observed diurnal variability in all three parameters is strongly modulated by both background atmospheric conditions and geomagnetic activity, exhibiting clear latitudinal differences. On seasonal scales, meteor flux peaks during summer, particularly in July. MPH shows both annual modulation, most evident over NSMR, and a significant semiannual component with maxima during spring and autumn. FWHM shows lower values in summer and higher values in winter, consistent with mesospheric temperature variations. Comparisons with Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) and COSPAR International Reference Atmosphere-1986 (CIRA86) temperature data demonstrate good agreement, supporting the use of FWHM as a temperature proxy on seasonal scales. Interannual analysis reveals a clear inverse relationship between meteor flux and solar activity at NSMR, whereas the correlation is weaker at NTMR, likely reflecting enhanced geomagnetic influence in the auroral zone. MPH remains relatively stable over the solar cycle, while FWHM exhibits a weak positive solar cycle dependence at NTMR. The meteor flux exhibits a positive long-term trend at NSMR, but a decreasing trend at NTMR, whereas long-term trends in both MPH and FWHM are negligible at both stations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Advances in Space Research is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194127356
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.asr.2026.03.092
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 12364
    Subjects:
      – SubjectFull: Meteors
        Type: general
      – SubjectFull: Geomagnetic variations
        Type: general
      – SubjectFull: Statistical measurement
        Type: general
      – SubjectFull: Arctic climate
        Type: general
      – SubjectFull: Diurnal variations in meteorology
        Type: general
      – SubjectFull: Svalbard (Norway)
        Type: general
    Titles:
      – TitleFull: Meteor observations in the northern polar MLT region: A comprehensive long-term analysis.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Portel, Vaishali
      – PersonEntity:
          Name:
            NameFull: Kishore Kumar, G.
      – PersonEntity:
          Name:
            NameFull: Nozawa, Satonori
      – PersonEntity:
          Name:
            NameFull: Tsutsumi, M.
      – PersonEntity:
          Name:
            NameFull: Johnsen, M.G.
      – PersonEntity:
          Name:
            NameFull: Gulbrandsen, Njål
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 02731177
          Numbering:
            – Type: volume
              Value: 77
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: Advances in Space Research
              Type: main
ResultId 1