View in EDS

Contrasting ozone responses driven by Mediterranean ventilation and anticyclonic blocking under high-temperatures in coastal Southwestern Europe.

Saved in:
Bibliographic Details
Title: Contrasting ozone responses driven by Mediterranean ventilation and anticyclonic blocking under high-temperatures in coastal Southwestern Europe.
Authors: Adame, J.A.1 (AUTHOR) adamecj@inta.es, Gutierrez-Alvarez, I.2 (AUTHOR), Notario, A.3 (AUTHOR), Yela, M.4 (AUTHOR)
Source: Atmospheric Research. Jan2026, Vol. 327, pN.PAG-N.PAG. 1p.
Subjects: Ozone, Global warming, Air quality, High temperatures, Coasts, Blocking (Meteorology), Ventilation
Geographic Terms: Strait of Gibraltar, Mediterranean Sea, Europe
Abstract: The contrasting responses of surface ozone to high-temperature conditions were investigated at El Arenosillo coastal observatory (southwestern Europe) using 24 years of data (2000–2023). Two event types were defined: high-ozone/high-temperature (HOHT) and low-ozone/high-temperature (LOHT) events. A total of 52 HOHT and 291 LOHT events were identified, with a fourfold decline in HOHT frequency during the later decade (2012−2023) compared to 2000–2011. On average, HOHT days recorded 15.4 ± 7.9 ppb more ozone than LOHT days, with differences peaking at 30 ppb. Temperature increases during LOHT events reached up to 7.1 °C. Two representative cases were analysed, both exceeding 30 °C and dominated by coastal breeze circulation, yet displaying opposite ozone behaviours. HOHT events were associated with anticyclonic ridging over central Europe, northerly flow from southern Portugal , and easterly winds through the Strait of Gibraltar , facilitating ozone transport from Portugal and the western Mediterranean, which was subsequently trapped inland by sea breezes. In contrast, LOHT events coincided with a weakened anticyclone and a deeper Icelandic Low, blocking Mediterranean ventilation and inducing westerly flow in the Strait, which diverted ozone transport eastward and inhibited accumulation locally. These contrasting circulation patterns may shift in frequency under global warming, potentially reducing ozone pollution in this coastal area while enhancing it elsewhere in the western Mediterranean. Understanding the evolving role of large-scale dynamics is critical to anticipate future ozone variability and heat extremes in this transitional region between marine and continental influences. • HOHT and LOHT events analysed at an Atlantic coastal site (2000−2023). • Mediterranean ventilation and external input enhance HOHT events. • Anticyclonic blocking in the Mediterranean favours LOHT events. • High temperatures and breezes alone are insufficient for ozone formation. • LOHT events may become more frequent under global warming scenarios. [ABSTRACT FROM AUTHOR]
Copyright of Atmospheric Research is the property of Elsevier B.V. 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: 187338206
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Contrasting ozone responses driven by Mediterranean ventilation and anticyclonic blocking under high-temperatures in coastal Southwestern Europe.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Adame%2C+J%2EA%2E%22">Adame, J.A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> adamecj@inta.es</i><br /><searchLink fieldCode="AR" term="%22Gutierrez-Alvarez%2C+I%2E%22">Gutierrez-Alvarez, I.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Notario%2C+A%2E%22">Notario, A.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yela%2C+M%2E%22">Yela, M.</searchLink><relatesTo>4</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Atmospheric+Research%22">Atmospheric Research</searchLink>. Jan2026, Vol. 327, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Ozone%22">Ozone</searchLink><br /><searchLink fieldCode="DE" term="%22Global+warming%22">Global warming</searchLink><br /><searchLink fieldCode="DE" term="%22Air+quality%22">Air quality</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Coasts%22">Coasts</searchLink><br /><searchLink fieldCode="DE" term="%22Blocking+%28Meteorology%29%22">Blocking (Meteorology)</searchLink><br /><searchLink fieldCode="DE" term="%22Ventilation%22">Ventilation</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Strait+of+Gibraltar%22">Strait of Gibraltar</searchLink><br /><searchLink fieldCode="DE" term="%22Mediterranean+Sea%22">Mediterranean Sea</searchLink><br /><searchLink fieldCode="DE" term="%22Europe%22">Europe</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The contrasting responses of surface ozone to high-temperature conditions were investigated at El Arenosillo coastal observatory (southwestern Europe) using 24 years of data (2000–2023). Two event types were defined: high-ozone/high-temperature (HOHT) and low-ozone/high-temperature (LOHT) events. A total of 52 HOHT and 291 LOHT events were identified, with a fourfold decline in HOHT frequency during the later decade (2012−2023) compared to 2000–2011. On average, HOHT days recorded 15.4 ± 7.9 ppb more ozone than LOHT days, with differences peaking at 30 ppb. Temperature increases during LOHT events reached up to 7.1 °C. Two representative cases were analysed, both exceeding 30 °C and dominated by coastal breeze circulation, yet displaying opposite ozone behaviours. HOHT events were associated with anticyclonic ridging over central Europe, northerly flow from southern Portugal , and easterly winds through the Strait of Gibraltar , facilitating ozone transport from Portugal and the western Mediterranean, which was subsequently trapped inland by sea breezes. In contrast, LOHT events coincided with a weakened anticyclone and a deeper Icelandic Low, blocking Mediterranean ventilation and inducing westerly flow in the Strait, which diverted ozone transport eastward and inhibited accumulation locally. These contrasting circulation patterns may shift in frequency under global warming, potentially reducing ozone pollution in this coastal area while enhancing it elsewhere in the western Mediterranean. Understanding the evolving role of large-scale dynamics is critical to anticipate future ozone variability and heat extremes in this transitional region between marine and continental influences. • HOHT and LOHT events analysed at an Atlantic coastal site (2000−2023). • Mediterranean ventilation and external input enhance HOHT events. • Anticyclonic blocking in the Mediterranean favours LOHT events. • High temperatures and breezes alone are insufficient for ozone formation. • LOHT events may become more frequent under global warming scenarios. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Atmospheric Research is the property of Elsevier B.V. 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=187338206
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.atmosres.2025.108350
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Ozone
        Type: general
      – SubjectFull: Global warming
        Type: general
      – SubjectFull: Air quality
        Type: general
      – SubjectFull: High temperatures
        Type: general
      – SubjectFull: Coasts
        Type: general
      – SubjectFull: Blocking (Meteorology)
        Type: general
      – SubjectFull: Ventilation
        Type: general
      – SubjectFull: Strait of Gibraltar
        Type: general
      – SubjectFull: Mediterranean Sea
        Type: general
      – SubjectFull: Europe
        Type: general
    Titles:
      – TitleFull: Contrasting ozone responses driven by Mediterranean ventilation and anticyclonic blocking under high-temperatures in coastal Southwestern Europe.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Adame, J.A.
      – PersonEntity:
          Name:
            NameFull: Gutierrez-Alvarez, I.
      – PersonEntity:
          Name:
            NameFull: Notario, A.
      – PersonEntity:
          Name:
            NameFull: Yela, M.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 01698095
          Numbering:
            – Type: volume
              Value: 327
          Titles:
            – TitleFull: Atmospheric Research
              Type: main
ResultId 1