Robotic Observations of Enhanced Carbon Biomass and Export at 55°S During SOFeX
Robotic Observations of Enhanced Carbon Biomass and Export at 55°S During SOFeX
复制标题
SOFeX 期间 55°S 增强碳生物质和出口的机器人观测
作者：
J. Bishop;T. Wood;R. Davis;J. Sherman
2002 年南大洋铁实验 (SOFeX) 期间，南大洋高硝酸盐低硅酸盐水域的自主浮标剖面观察了碳生物量变化和碳输出到 100 m 深处，以检测那里地表水铁肥化的影响。控制和“补丁内”测量记录了经过铁处理的水域中碳生物量增加了四倍以上。当该斑块俯冲到前缘以下时，100 m 的碳输出增加了两到六倍。添加的铁与输出的碳的摩尔比在104和105之间。对于铁修正的低硅酸盐水来说，生物量的积累和输出远高于预期。
Autonomous floats profiling in high-nitrate low-silicate waters of the Southern Ocean observed carbon biomass variability and carbon exported to depths of 100 m during the 2002 Southern Ocean Iron Experiment (SOFeX) to detect the effects of iron fertilization of surface water there. Control and “in-patch” measurements documented a greater than fourfold enhancement of carbon biomass in the iron-amended waters. Carbon export through 100 m increased two- to sixfold as the patch subducted below a front. The molar ratio of iron added to carbon exported ranged between 104 and 105. The biomass buildup and export were much higher than expected for iron-amended low-silicate waters.