View in EDS PDF Full Text

A satellite-derived re-analysis of surface-ocean pH variability in the coastal waters of India.

Saved in:
Bibliographic Details
Title: A satellite-derived re-analysis of surface-ocean pH variability in the coastal waters of India.
Authors: Vase, Vinaya Kumar1 v.vinaykumarvs@gmail.com, Kumar, Rajan1, Rahangdale, Shikha1, Kartu, Sanjana1, Solanki, Harshad1, Jayaraman, Jayasankar1, Kumar, Ratheesh1, George, Grinson1
Source: Current Science (00113891). 6/25/2026, Vol. 130 Issue 12, p1077-1086. 10p.
Subjects: pH effect, Ocean acidification, Climate change, Coasts, Remote sensing, Marine ecology
Geographic Terms: India
Abstract: Monitoring pH variations in coastal waters is essential for maintaining marine life and developing strategies to combat ocean acidification caused by climate change. The present study examines pH changes on interannual and seasonal scales along the northwest (NW), southwest (SW), southeast (SE), and northeast (NE) coasts of India over 30 years (1993-2022) using satellite data. Results reveal a significant decline in pH levels (R² = 0.727) across Indian coastal waters, with notable regional differences. The northeastern coast showed the greatest pH stability and the smallest decrease (R² = 0.798), while the southwestern coast experienced the highest variability (R² = 0.490). These regional pH fluctuations suggest varying resilience to ocean acidification. The NE and SW coasts, with higher variability, may be more susceptible to environmental changes, underscoring the importance of targeted monitoring and mitigation measures. In contrast, the more stable trends along the SE and NW coasts present opportunities to explore long-term resilience mechanisms. Seasonal fluctuations were evident everywhere, with winter consistently showing higher pH values and monsoon seasons the lowest. Principal component analysis indicated that the first two components accounted for 85.7% of the variance, highlighting factors such as seasonal river inflows, biological activity, and monsoonal freshwater input. Overall, these findings emphasise the importance of region-specific coastal management strategies to address climate change impacts and human pressures, while also providing a baseline for tracking future ocean acidification trends and assessing their effects on marine biodiversity and ecosystem services [ABSTRACT FROM AUTHOR]
Copyright of Current Science (00113891) is the property of Indian Academy of Sciences 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 Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 194920833
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: A satellite-derived re-analysis of surface-ocean pH variability in the coastal waters of India.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Vase%2C+Vinaya+Kumar%22">Vase, Vinaya Kumar</searchLink><relatesTo>1</relatesTo><i> v.vinaykumarvs@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kumar%2C+Rajan%22">Kumar, Rajan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rahangdale%2C+Shikha%22">Rahangdale, Shikha</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kartu%2C+Sanjana%22">Kartu, Sanjana</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Solanki%2C+Harshad%22">Solanki, Harshad</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jayaraman%2C+Jayasankar%22">Jayaraman, Jayasankar</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kumar%2C+Ratheesh%22">Kumar, Ratheesh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22George%2C+Grinson%22">George, Grinson</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Current+Science+%2800113891%29%22">Current Science (00113891)</searchLink>. 6/25/2026, Vol. 130 Issue 12, p1077-1086. 10p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22pH+effect%22">pH effect</searchLink><br /><searchLink fieldCode="DE" term="%22Ocean+acidification%22">Ocean acidification</searchLink><br /><searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Coasts%22">Coasts</searchLink><br /><searchLink fieldCode="DE" term="%22Remote+sensing%22">Remote sensing</searchLink><br /><searchLink fieldCode="DE" term="%22Marine+ecology%22">Marine ecology</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22India%22">India</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Monitoring pH variations in coastal waters is essential for maintaining marine life and developing strategies to combat ocean acidification caused by climate change. The present study examines pH changes on interannual and seasonal scales along the northwest (NW), southwest (SW), southeast (SE), and northeast (NE) coasts of India over 30 years (1993-2022) using satellite data. Results reveal a significant decline in pH levels (R² = 0.727) across Indian coastal waters, with notable regional differences. The northeastern coast showed the greatest pH stability and the smallest decrease (R² = 0.798), while the southwestern coast experienced the highest variability (R² = 0.490). These regional pH fluctuations suggest varying resilience to ocean acidification. The NE and SW coasts, with higher variability, may be more susceptible to environmental changes, underscoring the importance of targeted monitoring and mitigation measures. In contrast, the more stable trends along the SE and NW coasts present opportunities to explore long-term resilience mechanisms. Seasonal fluctuations were evident everywhere, with winter consistently showing higher pH values and monsoon seasons the lowest. Principal component analysis indicated that the first two components accounted for 85.7% of the variance, highlighting factors such as seasonal river inflows, biological activity, and monsoonal freshwater input. Overall, these findings emphasise the importance of region-specific coastal management strategies to address climate change impacts and human pressures, while also providing a baseline for tracking future ocean acidification trends and assessing their effects on marine biodiversity and ecosystem services [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Current Science (00113891) is the property of Indian Academy of Sciences 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=194920833
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.18520/cs/v130/i12/1077-1086
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1077
    Subjects:
      – SubjectFull: pH effect
        Type: general
      – SubjectFull: Ocean acidification
        Type: general
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Coasts
        Type: general
      – SubjectFull: Remote sensing
        Type: general
      – SubjectFull: Marine ecology
        Type: general
      – SubjectFull: India
        Type: general
    Titles:
      – TitleFull: A satellite-derived re-analysis of surface-ocean pH variability in the coastal waters of India.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Vase, Vinaya Kumar
      – PersonEntity:
          Name:
            NameFull: Kumar, Rajan
      – PersonEntity:
          Name:
            NameFull: Rahangdale, Shikha
      – PersonEntity:
          Name:
            NameFull: Kartu, Sanjana
      – PersonEntity:
          Name:
            NameFull: Solanki, Harshad
      – PersonEntity:
          Name:
            NameFull: Jayaraman, Jayasankar
      – PersonEntity:
          Name:
            NameFull: Kumar, Ratheesh
      – PersonEntity:
          Name:
            NameFull: George, Grinson
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 25
              M: 06
              Text: 6/25/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00113891
          Numbering:
            – Type: volume
              Value: 130
            – Type: issue
              Value: 12
          Titles:
            – TitleFull: Current Science (00113891)
              Type: main
ResultId 1