Chlorophyll concentration and optical absorption spectra of particulate and dissolved material, collected at several depths on DEEPEND cruises DP01 and DP02, May 2015 - Aug 2015

The optical absorption spectra from seawater’s particulate and dissolved components can be used to compute the penetration of light to various depths, estimate the proportion of living to non-living particulate matter, assess photosynthetic light availability and the type of phytoplankton present, and the validate of satellite or airborne ocean color measurements. Chlorophyll and phaeopigment concentrations are often used to estimate the amount of phytoplankton present, and to allow extrapolation of in situ fluorometric measurements. This dataset contains measurements of chlorophyll concentrations and optical absorption spectra derived from particulate filtrations of water samples and the particle-free filtrate. The water samples were collected between 02-08 May and 09-12 August, 2015 during the DP01 and DP02 cruises, as was the GRIIDC CTD datasets R4.x257.230:0004 and R4.x257.230:0010.海水颗粒态与溶解态组分的光吸收光谱（optical absorption spectra），可用于计算不同深度的光穿透率、估算活体与非活体颗粒物质的占比、评估光合有效光条件及现存浮游植物（phytoplankton）类群，还可用于验证卫星或航空海洋水色测量结果。叶绿素（Chlorophyll）与脱镁色素（phaeopigment）的浓度常被用于估算现存浮游植物生物量，并可实现原位荧光测定（in situ fluorometric measurements）结果的外推。本数据集包含通过水样颗粒过滤（particulate filtrations）与无颗粒滤液（particle-free filtrate）得到的叶绿素浓度测量数据，以及光吸收光谱数据。水样采集于2015年5月2日至8日、8月9日至12日的DP01与DP02航次，配套的GRIIDC CTD数据集R4.x257.230:0004与R4.x257.230:0010同样采集于此期间。