Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic
Significance of cyclonic SubTropical Oceanic Rings of Magnitude (STORM) eddies for the carbon budget of the euphotic layer in the subtropical northeast Atlantic
复制标题
气旋性副热带海洋震级环（STORM）涡旋对副热带东北大西洋富光层碳收支的意义
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Giraud
中科院分区：
文献类型：
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作者：
B. Mouriño;E. Fernández;H. Etienne;F. Hernandez;S. Giraud
[1]利用TOPEX/Poseidon和ERS-1/2卫星高度计图像、业务海洋中尺度预报系统SOPRANE和中尺度涡旋自动探测系统，研究了1993-1999年亚速尔流在东北副热带大西洋（20 ° N- 34 ° N; 19 ° W-35 ° W）萌生的气旋性涡旋的年际和季节变化。共探测到17个气旋性涡旋，监测时间从50天到360天不等。它们的特征是平均向西速度，振幅，直径和偏心率分别约为2公里d-1，8厘米，187公里和0.7。气旋性涡旋的产生受到重要的年际变化，特别是在1995年，当东北大西洋的气旋性涡旋的活动更强烈，并与亚速尔群岛电流的涡动能量的平行变化。75%的中尺度特征是在整个1998年至2月期间产生的。显着的季节性NAO指数和每年的涡动动能和势能在亚速尔群岛海流区，也被占的风暴涡，计算与1年的相位滞后的总面积之间的关系。这项研究的结果被用来估计的贡献风暴涡的有机碳赤字在东北亚热带大西洋测量。平均而言，这些漩涡占该地区净群落生产的不到1%。索引术语：4520海洋学身体状况：涡旋和中尺度过程; 4806海洋学生物和化学：碳循环; 1640全球变化：遥感; 4215海洋学概述：气候和年际变率（3309）;关键词：中尺度涡旋，有机碳赤字，亚热带东北大西洋
[1] The interannual and seasonal variability of cyclonic eddies budded from the Azores Current during the period 1993–1999 in the northeast subtropical Atlantic region (20� N– 34� N; 19� W–35� W) was studied by using TOPEX/Poseidon and ERS-1/2 altimeter images, the operational ocean mesoscale forecasting system SOPRANE, and a mesoscale eddies automatic detection system. Seventeen cyclonic eddies were detected and monitored for time periods ranging from 50 to 360 days. They were characterized by mean westward velocity, amplitude, diameter, and eccentricity of about 2 km d � 1 , 8 cm, 187 km and 0.7, respectively. The generation of cyclonic eddies was subjected to an important interannual variability, especially in 1995 when the activity of cyclonic eddies in the northeast Atlantic was more intense and associated with parallel changes in the eddy energy of the Azores Current. Seventy-five percent of the mesoscale features were generated throughout the October–February period. Significant relationships were found between the seasonal NAO index and both the annual eddy kinetic and potential energy in the Azores Current region and also the total annual area occupied by STORM eddies, calculated with a 1-year phase lag. The outcome of this study was used to estimate the contribution of STORM eddies to the organic carbon deficit measured in the northeast subtropical Atlantic. On average, these eddies accounted for <1% of the net community production in the region. INDEX TERMS: 4520 Oceanography: Physical: Eddies and mesoscale processes; 4806 Oceanography: Biological and Chemical: Carbon cycling; 1640 Global Change: Remote sensing; 4215 Oceanography: General: Climate and interannual variability (3309); KEYWORDS: mesoscale eddies, organic carbon deficit, subtropical northeast Atlantic