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  • Presentation | OS33B: Characterizing and Interpreting Marine Plankton Biogeography Using Different Lenses I Poster
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  • [ONLINE] OS33B-VR8753: Spatiotemporal Analysis of Chlorophyll-a Distribution Regimes Using Self-Organizing Maps: A 22-Year Study (2000-2022)
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Author(s):
Al Tahsin Mahmud khan, University of Chittagong (First Author, Presenting Author)
Md. Jalal Uddin, Khulna University of Engineering & Technology
Md. Enamul Hoque, University of Chittagong
Azizul Hakim, University of Chittagong
Mohan Kumar Das, National Oceanographic And Maritime Institute (NOAMI)


This study used a special analysis method (Self-Organising Map - SOM) to understand how chlorophyll-a (Chl-a, indicating marine plant life) varied in the Bay of Bengal over 22 years (2000-2022). The analysis identified nine distinct patterns ('provinces') of Chl-a distribution. While minimum levels stayed around 1.0 mg/m³, maximum levels varied significantly between these patterns, reaching up to 6.3 mg/m³ in the most productive areas. Strong differences existed between coastal and offshore waters, and from north to south.



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