Pigment concentrations determined by HPLC from samples collected on Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from Oct-Nov 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 (RR1815), from Hilo, Hawaii, USA to Papeete, French Polynesia. Leg 1 data are provided in a separate dataset (see 'Related Datasets' section of metadata).本数据集包含美国全球海洋示踪剂计划（GEOTRACES）GP15太平洋子午断面的高效液相色谱法（high-performance liquid chromatography，HPLC）色素数据，涵盖19丁酰基岩藻黄素（19But）、19己酰基岩藻黄素（19Hex）、别藻黄素（Allo）、β-胡萝卜素（β Car）、α-胡萝卜素（α Car）、叶绿素a（Chl a）、叶绿素b（Chl b）、叶绿素c1、c2（Chlc 1,2）、叶绿素c3（Chl c 3）、脱植基叶绿素（Cphlid）、双甲藻黄素（Diadino）、硅藻黄素（Diato）、岩藻黄素（Fuco）、叶黄素（Lut）、新黄素（Neo）、多甲藻黄素（Peri）、普林藻黄素（Prasino）、堇菜黄素（Viola）、玉米黄质（Zea）。该断面沿西经152°从阿拉斯加（56°M）延伸至塔希提（南纬20°），采样时段为2018年9月24日至2018年11月24日。 色素分析样品于每个主要站位（共23个站位）的6个深度层采集，经过滤后截留于GF/F滤膜上，并置于-80℃冷冻保存，直至由Ricardo Letelier管理的俄勒冈州立大学高效液相色谱设施（https://ceoas.oregonstate.edu/ocean-ecology-and-biogeochemistry-facilities）完成分析。样品于2019年9月采用Waters 996型吸光二极管阵列检测器搭配Waters 2475型荧光检测器完成提取与分析。 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（RR1815）的相关数据，航段起点为美国夏威夷希洛，终点为法属波利尼西亚帕皮提。第1航段数据已单独归档，详见元数据的"相关数据集"章节。