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Assessing Climate Trends in Bangladesh Using the Spatial Synoptic Classification

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Assessing Climate Trends in Bangladesh Using the Spatial Synoptic Classification
Συγγραφείς: Nishat T. Sumaya, Jason C. Senkbeil, Scott C. Sheridan
Πηγή: Climate ; Volume 13 ; Issue 11 ; Pages: 222
Στοιχεία εκδότη: Multidisciplinary Digital Publishing Institute
Έτος έκδοσης: 2025
Συλλογή: MDPI Open Access Publishing
Θεματικοί όροι: climate change, Bangladesh, tropical monsoon, synoptic classification, weather types
Θέμα γεωγραφικό: agris
Περιγραφή: Climate change is reshaping weather patterns and atmospheric circulation globally, particularly in monsoon-dominated tropical environments. To examine how these changes are unfolding in Bangladesh, we extend the Spatial Synoptic Classification (SSC) using ERA5 reanalysis (1960–2024) at three representative stations (Chittagong, Khulna, and Sylhet) to assess long-term changes in the SSC weather types and their internal meteorological properties. The SSC calendars were constructed and analyzed for seasonal distribution, interannual trends, and decadal anomalies of temperature and dew point. Results reveal that Bangladesh’s climatology is dominated by Moist Tropical (MT), Moist Moderate (MM), and Dry Moderate (DM) weather types with a coherent seasonal cycle. Interannually, MT increased strongly across all stations, while MM and DM declined significantly. Decadal anomalies show consistent warming and moistening since the 2000s, which are most pronounced for Dry Tropical (DT) and MT. These findings indicate that climate change in Bangladesh is expressed not only through shifting frequencies but also through evolving thermodynamic characteristics of daily weather types, underscoring the SSC framework’s value in tropical monsoon regions for generating actionable climate information to support heat-stress planning and climate-health services.
Τύπος εγγράφου: Thesis
Περιγραφή αρχείου: application/pdf
Γλώσσα: English
Relation: https://dx.doi.org/10.3390/cli13110222
DOI: 10.3390/cli13110222
Διαθεσιμότητα: https://doi.org/10.3390/cli13110222
Rights: https://creativecommons.org/licenses/by/4.0/
Αριθμός Καταχώρησης: edsbas.3CFB30A5
Βάση Δεδομένων: BASE
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  Data: Assessing Climate Trends in Bangladesh Using the Spatial Synoptic Classification
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  Data: <searchLink fieldCode="AR" term="%22Nishat+T%2E+Sumaya%22">Nishat T. Sumaya</searchLink><br /><searchLink fieldCode="AR" term="%22Jason+C%2E+Senkbeil%22">Jason C. Senkbeil</searchLink><br /><searchLink fieldCode="AR" term="%22Scott+C%2E+Sheridan%22">Scott C. Sheridan</searchLink>
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  Data: Climate ; Volume 13 ; Issue 11 ; Pages: 222
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  Data: Multidisciplinary Digital Publishing Institute
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  Data: 2025
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  Data: MDPI Open Access Publishing
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  Data: <searchLink fieldCode="DE" term="%22climate+change%22">climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Bangladesh%22">Bangladesh</searchLink><br /><searchLink fieldCode="DE" term="%22tropical+monsoon%22">tropical monsoon</searchLink><br /><searchLink fieldCode="DE" term="%22synoptic+classification%22">synoptic classification</searchLink><br /><searchLink fieldCode="DE" term="%22weather+types%22">weather types</searchLink>
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  Data: Climate change is reshaping weather patterns and atmospheric circulation globally, particularly in monsoon-dominated tropical environments. To examine how these changes are unfolding in Bangladesh, we extend the Spatial Synoptic Classification (SSC) using ERA5 reanalysis (1960–2024) at three representative stations (Chittagong, Khulna, and Sylhet) to assess long-term changes in the SSC weather types and their internal meteorological properties. The SSC calendars were constructed and analyzed for seasonal distribution, interannual trends, and decadal anomalies of temperature and dew point. Results reveal that Bangladesh’s climatology is dominated by Moist Tropical (MT), Moist Moderate (MM), and Dry Moderate (DM) weather types with a coherent seasonal cycle. Interannually, MT increased strongly across all stations, while MM and DM declined significantly. Decadal anomalies show consistent warming and moistening since the 2000s, which are most pronounced for Dry Tropical (DT) and MT. These findings indicate that climate change in Bangladesh is expressed not only through shifting frequencies but also through evolving thermodynamic characteristics of daily weather types, underscoring the SSC framework’s value in tropical monsoon regions for generating actionable climate information to support heat-stress planning and climate-health services.
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