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Oceanic response to Hurricane Irma (2017) in the Exclusive Economic Zone of Cuba and the eastern Gulf of Mexico
Ocean Dynamics ( IF 2.3 ) Pub Date : 2020-03-05 , DOI: 10.1007/s10236-020-01350-y Dailé Avila-Alonso , Jan M. Baetens , Rolando Cardenas , Bernard De Baets
Ocean Dynamics ( IF 2.3 ) Pub Date : 2020-03-05 , DOI: 10.1007/s10236-020-01350-y Dailé Avila-Alonso , Jan M. Baetens , Rolando Cardenas , Bernard De Baets
An understanding of the oceanic response to tropical cyclones is of importance for studies on climate change, ecological variability and environmental protection. Hurricane Irma (2017, Atlantic Ocean) broke many records, including the fact that it was the first category 5 hurricane making landfall in Cuba since 1924. In this study, we assess the oceanic response of the waters of the Cuban Exclusive Economic Zone (EEZ) and the eastern Gulf of Mexico (GoM) to the passage of this hurricane. Overall, Irma led to a weak sea surface cooling in the EEZ, which was associated with the thermal structure of its waters and the fact that it was affected by the left-side quadrants of this hurricane. This cooling was driven by mixing and upwelling processes. In contrast, the chlorophyll-a (chl-a) concentration increase was comparable with climatological records, suggesting that horizontal advection of coastal waters and entrainment of chl-a rich waters from remote regions of the GoM influenced the post-storm chl-a concentration. Moreover, Irma increased the chl-a concentration in the northeastern GoM and stimulated the offshore transport of these chl-a-rich waters to the interior GoM. A high chl-a plume (HCP) extended southward across the eastern GoM during the first post-storm week of Irma, and these waters reached the northwestern Cuban coast following the Loop Current. An intensification of the geostrophic currents of an anticyclonic eddy at the upper front of the Loop Current, the formation of an anticyclonic-cyclonic eddy pair in the northeastern GoM and wind-driven advection governed the extension of this HCP.
中文翻译:
古巴专属经济区和墨西哥湾东部对伊尔玛飓风(2017年)的海洋反应
了解海洋对热带气旋的反应对于研究气候变化,生态变异和环境保护至关重要。伊尔玛飓风(2017年,大西洋)打破了许多记录,其中包括自1924年以来这是古巴首次发生5类飓风登陆。在这项研究中,我们评估了古巴专属经济区(EEZ)水域的海洋响应)和墨西哥湾东部(GoM)到这场飓风的通过。总体而言,Irma导致EEZ的海面冷却较弱,这与其水域的热结构以及受飓风左侧象限影响有关。这种冷却是通过混合和上升过程来驱动的。相反,叶绿素a(chl-a)的浓度增加与气候记录相当,提示沿海水域的水平对流和来自哥伦比亚偏远地区的chl-a富水的夹带影响了风暴后chl-a的浓度。此外,Irma增加了东北GoM中的chl-a浓度,并刺激了这些富含chl-a的水域向内部GoM的近海运输。在艾尔玛飓风过后的第一个星期,一个高chl-a羽状流(HCP)向南延伸穿过东部GoM,这些水域在环流之后到达古巴西北海岸。HCP的扩展控制了环流上部前缘的反气旋涡的地转流激增,反气旋-气旋涡对的形成以及风对流。
更新日期:2020-03-05
中文翻译:
古巴专属经济区和墨西哥湾东部对伊尔玛飓风(2017年)的海洋反应
了解海洋对热带气旋的反应对于研究气候变化,生态变异和环境保护至关重要。伊尔玛飓风(2017年,大西洋)打破了许多记录,其中包括自1924年以来这是古巴首次发生5类飓风登陆。在这项研究中,我们评估了古巴专属经济区(EEZ)水域的海洋响应)和墨西哥湾东部(GoM)到这场飓风的通过。总体而言,Irma导致EEZ的海面冷却较弱,这与其水域的热结构以及受飓风左侧象限影响有关。这种冷却是通过混合和上升过程来驱动的。相反,叶绿素a(chl-a)的浓度增加与气候记录相当,提示沿海水域的水平对流和来自哥伦比亚偏远地区的chl-a富水的夹带影响了风暴后chl-a的浓度。此外,Irma增加了东北GoM中的chl-a浓度,并刺激了这些富含chl-a的水域向内部GoM的近海运输。在艾尔玛飓风过后的第一个星期,一个高chl-a羽状流(HCP)向南延伸穿过东部GoM,这些水域在环流之后到达古巴西北海岸。HCP的扩展控制了环流上部前缘的反气旋涡的地转流激增,反气旋-气旋涡对的形成以及风对流。