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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Super Cyclone Induces a Mesoscale Phytoplankton Bloom in the Bay of Bengal
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Super Cyclone Induces a Mesoscale Phytoplankton Bloom in the Bay of Bengal

机译:超级旋风在孟加拉湾诱发中尺度浮游植物绽放

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摘要

Tropical cyclones when on land create havoc, but over the oceans they can trigger a very strong biological response, giving rise to phytoplankton blooms. The Super Cyclone (TC) 05B that occurred during October 25-29, 1999, in the Bay of Bengal over the tropical Indian Ocean was one of the most significant tropical cyclones on record to affect India, with maximum winds of 240 km/h, and the worst since 1971. Using satellite data, it is found that this tropical super cyclone helped spawn a notable mesoscale phytoplankton bloom in the domain (17deg-20degN; 87deg-90degE), which persisted for over a month. The bloom spanned 440 km zonally and 330 km meridionally, enhanced the chlorophyll-a concentrations to a maximum of 10 mg/m3 and the net primary productivity by 200%. Furthermore, a cyclonic eddy over the bloom region is revealed from an ocean general circulation model simulation, helping the bloom to last for over month.
机译:陆地上的热带气旋会造成严重破坏,但在海洋上空,它们会引发非常强烈的生物反应,导致浮游植物大量繁殖。 1999年10月25日至29日在印度洋上空的孟加拉湾发生的超级旋风(TC)05B是有史以来影响印度的最重要的热带气旋之一,最大风速为240 km / h,这是自1971年以来最严重的一次。使用卫星数据发现,这种热带超级旋风在该区域(17deg-20degN; 87deg-90degE)中产生了明显的中尺度浮游植物开花,持续了一个多月。花期跨越地带440 km和子午330 km,使叶绿素a的浓度最高增加到10 mg / m3,净初级生产力提高了200%。此外,海洋总体环流模型模拟揭示了盛开区域上的旋风涡流,从而使盛开持续了一个多月。

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