Phytoplankton blooms detected by SeaWiFS along the central and southern California coast
Phytoplankton blooms detected by SeaWiFS along the central and southern California coast
复制标题
SeaWiFS 检测到加州中部和南部海岸浮游植物大量繁殖
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Sengupta
中科院分区：
文献类型：
--
作者：
N. Nezlin;M. Sutula;R. Stumpf;A. Sengupta
[1]使用10+年（1997-2007年）的遥感表面叶绿素浓度（CHL，来自SeaWiFS海洋颜色）、海面温度和模拟淡水排放，分析了上升流事件、暴雨排水和局部环流对加州和南加州湾（SCB）海岸带浮游植物水华的影响。利用CHL > 5 mg m−3的区域的近海延伸进行了与浮游植物水华相关的变异性和因素分析;这种方法排除了陆地干扰，因为陆地干扰使使用海洋颜色调查沿海沃茨的浮游植物水华变得复杂。在SCB中，水华在春季最为频繁，并与春季向上升流制度的过渡有关。沿着中央海岸，在上升流季节性增强期间，水华从春季持续到秋季。在1997-2007年期间，近海CHL延伸显示出显著的正趋势，在2000-2001年和2005-2006年达到最大值，与高于正常频率的上升流事件相吻合。上升流被认为是驱动浮游植物水华的一个主要因素，虽然来自大尺度大气环流的标准上升流指数是脱钩的上升流事件和浮游植物水华的频率。与沿海海洋区域之间的自然边界有关的较长停留时间的地区有更广泛和持久的水华。雨水排放对近海CHL扩展的影响似乎仅限于靠近主要河口的地区。这些“热点”还与公营污水处理厂排放的海洋排放口位于同一地点，在某些情况下，沿海沃茨的停留时间较长。
[1] The effect of upwelling events, storm water discharge, and local circulation on phytoplankton blooms in the central California and Southern California Bight (SCB) coastal zones was analyzed using 10+ years (1997–2007) of remotely sensed surface chlorophyll concentration (CHL, derived from SeaWiFS ocean color), sea surface temperature, and modeled freshwater discharge. Analysis of variability and factors associated with phytoplankton blooms was conducted using the offshore extension of zones of CHL > 5 mg m−3; this method excludes terrestrial interference that complicates the use of ocean color to investigate phytoplankton blooms in coastal waters. In the SCB, blooms were most frequent in spring and associated with the spring transition to an upwelling regime. Along the Central Coast, blooms persisted from spring to autumn during seasonal intensification of upwelling. Offshore CHL extensions showed a significant positive trend during 1997–2007, with maxima in 2000–2001 and 2005–2006 that coincided with higher than normal frequency of upwelling events. Upwelling was found to be a major factor driving phytoplankton blooms, although the standard upwelling index derived from large-scale atmospheric circulation was decoupled from the frequencies of both upwelling events and phytoplankton blooms. Areas of longer residence time associated with natural boundaries between coastal ocean regions had more extensive and persistent blooms. The influence of storm water discharge on offshore CHL extension appeared to be limited to areas in close proximity to major river mouths. These “hot spots” were also co-located with ocean outfalls of Publicly Owned Treatment Works (POTW) discharge and, in some cases, longer residence time of coastal waters.
影响因子：
6.6
作者：
Heisler J;Glibert P;Burkholder J;Anderson D;Cochlan W;Dennison W;Gobler C;Dortch Q;Heil C;Humphries E;Lewitus A;Magnien R;Marshall H;Sellner K;Stockwell D;Stoecker D;Suddleson M
通讯作者：
Suddleson M
影响因子：
6.6
作者：
Anderson DM;Burkholder JM;Cochlan WP;Glibert PM;Gobler CJ;Heil CA;Kudela R;Parsons ML;Rensel JE;Townsend DW;Trainer VL;Vargo GA
通讯作者：
Vargo GA