View in EDS

Investigation on the MLT tidal variability during September 2019 minor sudden stratospheric warming.

Saved in:
Bibliographic Details
Title: Investigation on the MLT tidal variability during September 2019 minor sudden stratospheric warming.
Authors: Mitra, G.1,2 (AUTHOR) gourav@prl.res.in, Guharay, A.1 (AUTHOR) guharay@prl.res.in, Batista, P.P.3 (AUTHOR) paulo.batista@inpe.br, Buriti, R.A.4 (AUTHOR), Moffat-Griffin, T.5 (AUTHOR) tmof@bas.ac.uk
Source: Advances in Space Research. Jan2023, Vol. 71 Issue 1, p869-882. 14p.
Subjects: Middle atmosphere, Atmospheric boundary layer, Vernal equinox, Water vapor, Atmospheric tides, Ozone layer
Abstract: • A few global tidal modes, DW1, DE3, and SW2 show significant variability during 2019 minor SSW. • Seasonal tidal variability can be explained by the potential tidal sources. • Deseasoned global tidal modes reveal clear response to the warming. Tidal variability in the mesosphere and lower thermosphere (MLT) during September 2019 Southern hemisphere minor sudden stratospheric warming (SSW) is investigated utilizing ground-based meteor radar wind observations from the equatorial, extratropical, middle, and high latitude stations and global reanalysis dataset. The polar warming is found to move from the mesosphere to the stratosphere until the peak warming day (PWD) of the SSW. The diurnal and semidiurnal tides at individual observational sites do not exhibit any consistent response during the observational interval, but a notable and consistent variability in some specific zonal wavenumber components, i. e., DW1 (migrating diurnal tide), DE3 (nonmigrating eastward wavenumber 3 diurnal tide), and SW2 (migrating semidiurnal tide) is found in the global reanalysis dataset. Incidentally, the warming event occurs during Spring equinox when a dominant seasonal change in the tidal activities generally takes place and hence seasonal variability is also looked into while identifying the SSW impact during the observational interval. It is found that the seasonal broad changes in the DW1, DE3, and SW2 amplitudes can be explained by the variability in the tidal sources, i.e., water vapor, convective activity, ozone, etc during the observational period. However, the extracted short-term variability in the global tidal modes on removing seasonal trend reveals noticeable response in connection with the warming event. The deseasoned amplitude of the DW1 significantly enhances around the PWD at most of the present latitudes. The deseasoned DE3 amplitude responds significantly in the middle atmosphere at low latitudes during the warming phase. The deseasoned SW2 exhibit clear enhancement around the PWD at all the latitudes. However, the deseasoned tidal features do not seem to correlate well with that of the source species unlike the seasonal ones that imply involvement of complex processes during the warming event, seeking further future investigations in this regard. [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: 160845573
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Investigation on the MLT tidal variability during September 2019 minor sudden stratospheric warming.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Mitra%2C+G%2E%22">Mitra, G.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> gourav@prl.res.in</i><br /><searchLink fieldCode="AR" term="%22Guharay%2C+A%2E%22">Guharay, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> guharay@prl.res.in</i><br /><searchLink fieldCode="AR" term="%22Batista%2C+P%2EP%2E%22">Batista, P.P.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> paulo.batista@inpe.br</i><br /><searchLink fieldCode="AR" term="%22Buriti%2C+R%2EA%2E%22">Buriti, R.A.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Moffat-Griffin%2C+T%2E%22">Moffat-Griffin, T.</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> tmof@bas.ac.uk</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Advances+in+Space+Research%22">Advances in Space Research</searchLink>. Jan2023, Vol. 71 Issue 1, p869-882. 14p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Middle+atmosphere%22">Middle atmosphere</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+boundary+layer%22">Atmospheric boundary layer</searchLink><br /><searchLink fieldCode="DE" term="%22Vernal+equinox%22">Vernal equinox</searchLink><br /><searchLink fieldCode="DE" term="%22Water+vapor%22">Water vapor</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+tides%22">Atmospheric tides</searchLink><br /><searchLink fieldCode="DE" term="%22Ozone+layer%22">Ozone layer</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • A few global tidal modes, DW1, DE3, and SW2 show significant variability during 2019 minor SSW. • Seasonal tidal variability can be explained by the potential tidal sources. • Deseasoned global tidal modes reveal clear response to the warming. Tidal variability in the mesosphere and lower thermosphere (MLT) during September 2019 Southern hemisphere minor sudden stratospheric warming (SSW) is investigated utilizing ground-based meteor radar wind observations from the equatorial, extratropical, middle, and high latitude stations and global reanalysis dataset. The polar warming is found to move from the mesosphere to the stratosphere until the peak warming day (PWD) of the SSW. The diurnal and semidiurnal tides at individual observational sites do not exhibit any consistent response during the observational interval, but a notable and consistent variability in some specific zonal wavenumber components, i. e., DW1 (migrating diurnal tide), DE3 (nonmigrating eastward wavenumber 3 diurnal tide), and SW2 (migrating semidiurnal tide) is found in the global reanalysis dataset. Incidentally, the warming event occurs during Spring equinox when a dominant seasonal change in the tidal activities generally takes place and hence seasonal variability is also looked into while identifying the SSW impact during the observational interval. It is found that the seasonal broad changes in the DW1, DE3, and SW2 amplitudes can be explained by the variability in the tidal sources, i.e., water vapor, convective activity, ozone, etc during the observational period. However, the extracted short-term variability in the global tidal modes on removing seasonal trend reveals noticeable response in connection with the warming event. The deseasoned amplitude of the DW1 significantly enhances around the PWD at most of the present latitudes. The deseasoned DE3 amplitude responds significantly in the middle atmosphere at low latitudes during the warming phase. The deseasoned SW2 exhibit clear enhancement around the PWD at all the latitudes. However, the deseasoned tidal features do not seem to correlate well with that of the source species unlike the seasonal ones that imply involvement of complex processes during the warming event, seeking further future investigations in this regard. [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=160845573
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.asr.2022.08.017
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 869
    Subjects:
      – SubjectFull: Middle atmosphere
        Type: general
      – SubjectFull: Atmospheric boundary layer
        Type: general
      – SubjectFull: Vernal equinox
        Type: general
      – SubjectFull: Water vapor
        Type: general
      – SubjectFull: Atmospheric tides
        Type: general
      – SubjectFull: Ozone layer
        Type: general
    Titles:
      – TitleFull: Investigation on the MLT tidal variability during September 2019 minor sudden stratospheric warming.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Mitra, G.
      – PersonEntity:
          Name:
            NameFull: Guharay, A.
      – PersonEntity:
          Name:
            NameFull: Batista, P.P.
      – PersonEntity:
          Name:
            NameFull: Buriti, R.A.
      – PersonEntity:
          Name:
            NameFull: Moffat-Griffin, T.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 01
              Text: Jan2023
              Type: published
              Y: 2023
          Identifiers:
            – Type: issn-print
              Value: 02731177
          Numbering:
            – Type: volume
              Value: 71
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Advances in Space Research
              Type: main
ResultId 1