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Seasonal variation of trend in temperature and ozone over the tropical stratosphere in the Northern Hemisphere

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Title: Seasonal variation of trend in temperature and ozone over the tropical stratosphere in the Northern Hemisphere
Authors: Fadnavis, S. suvarna@tropmet.res.in, Beig, G.1
Source: Journal of Atmospheric & Solar-Terrestrial Physics. Nov2006, Vol. 68 Issue 17, p1952-1961. 10p.
Subjects: Earth temperature, Ozone layer, Stratosphere
Geographic Terms: Northern Hemisphere
Abstract: Abstract: Temperature and ozone trends in the stratosphere are investigated using Halogen Occultation Experiment (HALOE) aboard Upper Atmospheric Research Satellite (UARS) observations for the period 1992–2004, over the tropics of Northern Hemisphere (0–30°N). The regression analysis of temperature time series indicates a significant annual cooling trend of 1–3K/decade in the free stratosphere. A cooling trend of ∼2±0.6K/decade near 25km which increases with altitude to reach a maximum around 35km and then decreases to 1±1.1K/decade near stratopause is computed. The observed maximum cooling trend near 35km may be viewed with caution due to the change over of temperature from National Centre for Environmental Prediction (NCEP) reanalysis data to HALOE instrument. A statistically significant decreasing ozone trend in the lower stratosphere is also obtained which becomes negligible above 40km. Attempt has been made to compute the seasonal trend components in both temperature and ozone. Seasonal distribution of temperature trends shows a maximum cooling during winter. The largest negative ozone trend is found during autumn with a peak (8–10% per decade) near 30km. [Copyright &y& Elsevier]
Copyright of Journal of Atmospheric & Solar-Terrestrial Physics 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
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Header DbId: egs
DbLabel: Engineering Source
An: 23220350
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Seasonal variation of trend in temperature and ozone over the tropical stratosphere in the Northern Hemisphere
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  Data: <searchLink fieldCode="AR" term="%22Fadnavis%2C+S%2E%22">Fadnavis, S.</searchLink><i> suvarna@tropmet.res.in</i><br /><searchLink fieldCode="AR" term="%22Beig%2C+G%2E%22">Beig, G.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Atmospheric+%26+Solar-Terrestrial+Physics%22">Journal of Atmospheric & Solar-Terrestrial Physics</searchLink>. Nov2006, Vol. 68 Issue 17, p1952-1961. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Earth+temperature%22">Earth temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Ozone+layer%22">Ozone layer</searchLink><br /><searchLink fieldCode="DE" term="%22Stratosphere%22">Stratosphere</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Northern+Hemisphere%22">Northern Hemisphere</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Temperature and ozone trends in the stratosphere are investigated using Halogen Occultation Experiment (HALOE) aboard Upper Atmospheric Research Satellite (UARS) observations for the period 1992–2004, over the tropics of Northern Hemisphere (0–30°N). The regression analysis of temperature time series indicates a significant annual cooling trend of 1–3K/decade in the free stratosphere. A cooling trend of ∼2±0.6K/decade near 25km which increases with altitude to reach a maximum around 35km and then decreases to 1±1.1K/decade near stratopause is computed. The observed maximum cooling trend near 35km may be viewed with caution due to the change over of temperature from National Centre for Environmental Prediction (NCEP) reanalysis data to HALOE instrument. A statistically significant decreasing ozone trend in the lower stratosphere is also obtained which becomes negligible above 40km. Attempt has been made to compute the seasonal trend components in both temperature and ozone. Seasonal distribution of temperature trends shows a maximum cooling during winter. The largest negative ozone trend is found during autumn with a peak (8–10% per decade) near 30km. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Atmospheric & Solar-Terrestrial Physics 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.)
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      – Type: doi
        Value: 10.1016/j.jastp.2006.09.003
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 1952
    Subjects:
      – SubjectFull: Earth temperature
        Type: general
      – SubjectFull: Ozone layer
        Type: general
      – SubjectFull: Stratosphere
        Type: general
      – SubjectFull: Northern Hemisphere
        Type: general
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      – TitleFull: Seasonal variation of trend in temperature and ozone over the tropical stratosphere in the Northern Hemisphere
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              Text: Nov2006
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              Y: 2006
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              Value: 68
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            – TitleFull: Journal of Atmospheric & Solar-Terrestrial Physics
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