Pigment concentrations determined by HPLC from samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018

This dataset contains high-performance liquid chromatography (HPLC) pigment data (19But, 19Hex, Allo, β Car, α Car, Chl a, Chl b, Chlc 1,2, Chl c 3, Cphlid, Diadino, Diato, Fuco, Lut, Neo, Peri, Prasino, Viola, Zea) from the U.S. GEOTRACES GP15 Pacific Meridional Transect from Alaska (56°M) to Tahiti (20°S) along 152°W between September 24, 2018 and November 24, 2018. Samples for pigment analysis were collected at 6 depths at every major station (N=23 stations) and filtered onto GF/F filters, which were frozen at -80°C until analysis at the HPLC Facility at Oregon State University managed by Ricardo Letelier (https://ceoas.oregonstate.edu/ocean-ecology-and-biogeochemistry-facilities). Samples were extracted and analyzed on a Waters 996 absorbance photodiode array detector in combination with a Waters 2475 fluorescence detector in September 2019. These data were collected by the GP15 management team to provide biological context for the geochemical measurements made by GEOTRACES PIs. This dataset contains the data from Leg 1 of the cruise (RR1814), from Seattle, Washington, USA to Hilo, Hawaii, USA. Leg 2 data are provided in a separate dataset (see 'Related Datasets' section of metadata).本数据集包含高效液相色谱（high-performance liquid chromatography, HPLC）色素数据，涉及的检测指标包括19But、19Hex、Allo、β Car、α Car、Chl a、Chl b、Chlc 1,2、Chl c 3、Cphlid、Diadino、Diato、Fuco、Lut、Neo、Peri、Prasino、Viola、Zea。数据源自美国GEOTRACES GP15太平洋经向断面，该断面沿152°W经线，于2018年9月24日至2018年11月24日期间，从阿拉斯加（56°M）延伸至塔希提（20°S）。色素分析样本在每个主要站位（共23个站位）的6个深度层采集，经过滤后截留于GF/F滤膜，并置于-80℃环境冷冻保存，直至2019年9月在由Ricardo Letelier管理的俄勒冈州立大学海洋生态与生物地球化学设施高效液相色谱实验室（https://ceoas.oregonstate.edu/ocean-ecology-and-biogeochemistry-facilities）完成分析。样本提取与分析工作采用Waters 996吸光二极管阵列检测器，搭配Waters 2475荧光检测器完成。本数据集由GP15管理团队采集，旨在为GEOTRACES首席研究员开展的地球化学测量提供生物学背景支撑。本数据集包含科考航次第1航段（RR1814）的全部数据，该航段从美国华盛顿州西雅图出发，终点为美国夏威夷州希洛。第2航段的数据已收录于独立数据集（详见元数据的『相关数据集』章节）。