Zooplankton biomass, taxonomic composition, and abundance in the Pacific Ocean from 2015-04-11 to 2015-06-18 measured by the Underwater Vision Profiler 5 (UVP5) on the P16N Repeat Hydrography cruise aboard the NOAA Ship Ronald H. Brown

<p>The Underwater Vision Profiler (UVP5) is an underwater camera system that was designed to record the vertical distributions of large aggregates and zooplankton (&gt; 102 µm) down to 6000 m. Two units that consist of red-light emitting diodes (LEDs) illuminate (in 100 µsecond flashes) an area of 4 X 20 cm which provides a volume sampling of ~1L per frame. The UVP5&nbsp;was mounted on the bottom of each CTD rosette and collected data on each CTD cast (data are collected during the down cast). The methodology generally follows Picheral et al., 2010.</p>水下视觉剖面仪（Underwater Vision Profiler，UVP5）是一款专为记录大型聚集体与体型大于102微米的浮游动物在水下至6000米深度的垂直分布而设计的水下摄像系统。该系统配备两组由红光发光二极管（Light Emitting Diodes，LEDs）组成的照明单元，以100微秒的闪光时长照射4×20厘米的区域，每帧可实现约1升的体积采样量。UVP5被安装于每台温盐深采水器（Conductivity Temperature Depth，CTD）布放架的底部，在每一次CTD下投过程中采集数据（数据采集于下沉投放阶段）。该采样方法总体遵循Picheral等人2010年的研究成果。