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Assessing thermal environmental changes of a semi-arid city using multi-temporal LCZ approach: a case study of Pune, India.

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Title: Assessing thermal environmental changes of a semi-arid city using multi-temporal LCZ approach: a case study of Pune, India.
Authors: Saha, Labani1 (AUTHOR) slaboni010@gmail.com, Patil, Avdhut1 (AUTHOR) abpatilsangamner@gmail.com, Dhorde, Amit1 (AUTHOR) amitdhorde@gmail.com, Demuzere, Matthias2 (AUTHOR) matthias@b-kode.be, Singh, Bhupendra Bahadur3 (AUTHOR) bhupendra.cat@tropmet.res.in
Source: Environmental Monitoring & Assessment. Sep2025, Vol. 197 Issue 9, p1-22. 22p.
Subject Terms: *Urbanization, *Land surface temperature, *Urban planning, *Cities & towns, *Climatic zones, *Arid regions, *Thermal properties, *Urban growth
Geographic Terms: Pune (India), India
Abstract: The unprecedented growth of urbanization demands making cities and human settlements inclusive, safe, resilient, and sustainable. The present study is the first multi-temporal local climate zones (LCZ) mapped in India. It is used to assess the spatio-temporal growth of the city over the past two decades and its impact on its thermal environment. Pune is a Class-I semi-arid city that witnessed rapid urban sprawl between 2005 and 2020 and still continues to grow. It was found that the built-up area increased from 31% to 68.3% while the natural land cover area decreased from 69 to 31.7%. As a result, LST decreased (increased) significantly at a rate of 0.2 ℃/year (0.1 ℃/year) during the day (night), respectively. Near the city center, where built-up density increases in an existing built-up area, both LSTday(night) increase around 0.1 ℃/year (0.03–0.06 ℃/year) in the day. However, when natural barren land turned into built-up, LSTday(night) decreased (increased) at more than 0.2 ℃/year (0.1 ℃/year), respectively. Barren lands converted to industrial areas are showing a significant increase in LSTday(night) at a rate of 0.4–0.8 ℃/year (0.12–0.16 ℃/year), respectively. The dried-up parts of the river show significantly increasing LSTday(night) at a rate of 0.3 ℃/year (0.03 ℃/year), respectively. We also note that plantation programs do indicate a cooling effect. Overall, the changes in LST are dependent on the type of LCZ and its transformation into different categories. The results from this case indicate that peripheral zones of the city are experiencing rapid and significant changes and have implications for policy and city planning. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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DbLabel: Energy & Power Source
An: 188001108
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Assessing thermal environmental changes of a semi-arid city using multi-temporal LCZ approach: a case study of Pune, India.
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Monitoring+%26+Assessment%22">Environmental Monitoring & Assessment</searchLink>. Sep2025, Vol. 197 Issue 9, p1-22. 22p.
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  Data: *<searchLink fieldCode="DE" term="%22Urbanization%22">Urbanization</searchLink><br />*<searchLink fieldCode="DE" term="%22Land+surface+temperature%22">Land surface temperature</searchLink><br />*<searchLink fieldCode="DE" term="%22Urban+planning%22">Urban planning</searchLink><br />*<searchLink fieldCode="DE" term="%22Cities+%26+towns%22">Cities & towns</searchLink><br />*<searchLink fieldCode="DE" term="%22Climatic+zones%22">Climatic zones</searchLink><br />*<searchLink fieldCode="DE" term="%22Arid+regions%22">Arid regions</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br />*<searchLink fieldCode="DE" term="%22Urban+growth%22">Urban growth</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Pune+%28India%29%22">Pune (India)</searchLink><br /><searchLink fieldCode="DE" term="%22India%22">India</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The unprecedented growth of urbanization demands making cities and human settlements inclusive, safe, resilient, and sustainable. The present study is the first multi-temporal local climate zones (LCZ) mapped in India. It is used to assess the spatio-temporal growth of the city over the past two decades and its impact on its thermal environment. Pune is a Class-I semi-arid city that witnessed rapid urban sprawl between 2005 and 2020 and still continues to grow. It was found that the built-up area increased from 31% to 68.3% while the natural land cover area decreased from 69 to 31.7%. As a result, LST decreased (increased) significantly at a rate of 0.2 ℃/year (0.1 ℃/year) during the day (night), respectively. Near the city center, where built-up density increases in an existing built-up area, both LSTday(night) increase around 0.1 ℃/year (0.03–0.06 ℃/year) in the day. However, when natural barren land turned into built-up, LSTday(night) decreased (increased) at more than 0.2 ℃/year (0.1 ℃/year), respectively. Barren lands converted to industrial areas are showing a significant increase in LSTday(night) at a rate of 0.4–0.8 ℃/year (0.12–0.16 ℃/year), respectively. The dried-up parts of the river show significantly increasing LSTday(night) at a rate of 0.3 ℃/year (0.03 ℃/year), respectively. We also note that plantation programs do indicate a cooling effect. Overall, the changes in LST are dependent on the type of LCZ and its transformation into different categories. The results from this case indicate that peripheral zones of the city are experiencing rapid and significant changes and have implications for policy and city planning. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=188001108
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s10661-025-14466-9
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 22
        StartPage: 1
    Subjects:
      – SubjectFull: Urbanization
        Type: general
      – SubjectFull: Land surface temperature
        Type: general
      – SubjectFull: Urban planning
        Type: general
      – SubjectFull: Cities & towns
        Type: general
      – SubjectFull: Climatic zones
        Type: general
      – SubjectFull: Arid regions
        Type: general
      – SubjectFull: Thermal properties
        Type: general
      – SubjectFull: Urban growth
        Type: general
      – SubjectFull: Pune (India)
        Type: general
      – SubjectFull: India
        Type: general
    Titles:
      – TitleFull: Assessing thermal environmental changes of a semi-arid city using multi-temporal LCZ approach: a case study of Pune, India.
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            NameFull: Saha, Labani
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            NameFull: Singh, Bhupendra Bahadur
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            – D: 01
              M: 09
              Text: Sep2025
              Type: published
              Y: 2025
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              Value: 197
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