Merged discrete water-column data from PAL LTER research cruises along the Western Antarctic Peninsula, from 1991 to 2020.

Water samples are collected throughout the water column along the Western Antarctic Peninsula at regular LTER grid stations where CTD casts are preformed and in surface waters at underway stations, where CTD casts are not done, using the ship’s flow-through seawater system. This dataset is the compilation of water samples collected at these stations, merged from other PAL-LTER datasets. Data includes water column Chlorophyll and Phaeopigment concentrations; phytoplankton accessory pigments -including other chlorophyll's (e.g. chlorophyll b), xanthophylls, and carotenes; primary production rates; bacterial production; dissolved organic carbon; particulate organic carbon and nitrogen; dissolved inorganic nutrients; dissolved oxygen, and dissolved inorganic carbon and alkalinity. Measurements of phytoplankton Fv/Fm measured using a FIRe (Fluorescence Induction and Relaxation) fluorometer are also included, though caution is urged as FIRe data has not been corrected nor QCed. Conductivity, temperature, depth, and associated data from instruments on the sampling rosette (e.g. PAR, beam transmission) for each sampling depth are also included.
Phytoplankton accessory pigment data is unavailable for the LMG10-01 cruise due to instrumentation problems and for the LMG12-01 cruise due to a freezer failure which resulted in the loss of samples. There is a temporary data gap for the 2019 cruise because those samples have not been analyzed yet. Dissolved oxygen measurements were discontinues after 2012, and thus no data is available from 2013 onwards. Dissolved Organic Carbon data is unavailable after 2012 due to instrumentation problems. There is no Particulate Organic Carbon data for cruise PD94-01. Dissolved Inorganic Nutrient samples after 2019 have not been analyzed yet.

本数据集的水样采集工作按如下方式开展：在南极半岛西部沿线的常规长期生态研究（Long Term Ecological Research, LTER）网格站位（该站位已开展CTD温盐深剖面观测），以及未开展CTD观测的走航站位表层水体中，采用船舶流通式海水采样系统完成全水柱水样采集。本数据集整合了上述所有站位采集的水样数据，数据源自其他PAL-LTER数据集。
数据涵盖以下多项指标：全水柱叶绿素与脱镁色素浓度；浮游植物辅助色素（包括叶绿素b等其他叶绿素类、叶黄素类与胡萝卜素类）；初级生产力速率；细菌生产力；溶解有机碳；颗粒有机碳与颗粒氮；溶解无机营养盐；溶解氧；以及溶解无机碳与碱度。此外还包含使用FIRe（荧光诱导与弛豫，Fluorescence Induction and Relaxation）荧光计测定的浮游植物Fv/Fm参数，但需注意：FIRe数据尚未经过校正与质量控制（Quality Control, QC）。同时收录各采样深度下，采水器阵列搭载仪器所记录的电导率、温度、深度及相关配套数据（如光合有效辐射（Photosynthetically Active Radiation, PAR）、光束透射率）。
因仪器故障，LMG10-01航次未获取浮游植物辅助色素数据；因冷库故障导致样品丢失，LMG12-01航次同样缺失该类数据。2019年航次存在临时数据缺口，因对应样品尚未完成分析。溶解氧测定项目于2012年后终止，因此2013年及之后无相关数据。2012年后因仪器故障，无溶解有机碳相关数据。PD94-01航次无颗粒有机碳相关数据。2019年之后的溶解无机营养盐样品尚未完成分析。