Impact of tropical cyclone Biparjoy on oceanic parameters in the Arabian Sea.

Autor: Kalhoro MA; Marine College, Shandong University, Weihai 264209, China; Faculty of Marine Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Pakistan., Chinta V; Marine College, Shandong University, Weihai 264209, China., de Mutsert K; School of Ocean Science and Engineering, The University of Southern Mississippi, United States., Song G; Marine Science College, Sun Yat-Sen University, Zhuhai, Guangdong, China., Liu C; Marine College, Shandong University, Weihai 264209, China., Tahir M; College of Statistics and Mathematics, Shandong University, Weihai 264209, China., Liang Z; Marine College, Shandong University, Weihai 264209, China. Electronic address: liangzhenlin@sdu.edu.cn.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Nov; Vol. 208, pp. 117046. Date of Electronic Publication: 2024 Sep 26.
DOI: 10.1016/j.marpolbul.2024.117046
Abstrakt: Climate change is expected to intensify tropical cyclones (TCs), requiring a deeper understanding of their ecosystem impacts. This study investigated TC Biparjoy impact on parameters from June 6 to 19, 2023, using satellite and vertical profiles. Initially, Chlorophyll-a levels remained steady but surged above 4 mg/m 3 after the high-intensity phase, indicating increased phytoplankton biomass. Sea surface temperature (SST) initially exceeded 32 °C, favoring cyclone intensification, but dropped below 26 °C post-high-intensity phase due to mixing and upwelling of cooler waters. The SST gradient exceeded 0.15 °C/km post-cyclone. Elevated sea surface height around 0.5 m offshore and over 1 m along the coast was recorded. Wind stress values exceeding 0.4 N/m 3 were observed during the high-intensity phase. Vertical profile showed uplifted low-temperature, nutrient-rich waters, enhancing phytoplankton productivity, supported by increased nitrate (>10 mmol/m 3 ) and phosphate (>1.2 mmol/m 3 ) levels. Additionally, slight increase in DIC, and pH during the cyclone period suggested changes in biogeochemical processes.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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