Biogenic and lithogenic silica concentrations from marine suspended particles collected during the 2011 CLIVAR S04P expedition on RVIB Nathaniel B. Palmer from February 19 to April 19, 2011

This dataset reports biogenic and lithogenic silica concentrations (in micromoles per liter (µmol/L)) from marine suspended particles collected during the 2011 CLIVAR S04P expedition on RVIB Nathaniel B. Palmer, 19 Feb-19 April 2011, which followed the 67° South parallel in the Pacific sector of the Southern Ocean, from the Ross Sea to the Western Antarctic Peninsula. Water from the upper 1000 meters was collected using a contamination-free trace metal rosette (12-liter Teflon-coated GO-Flo bottles). Samples were collected by Dr. Chris Measures (University of Hawaii-Manoa), Dr. William Landing (Florida State University), and Mr. Brian Kilgore (Florida State University). Samples were processed by Dr. Pete Morton (Florida State University) in the laboratory of Dr. Jeffrey Krause (Dauphin Island Sea Lab). These data serve as a proxy for the abundance and biogeographic distribution of siliceous phytoplankton, especially diatoms.本数据集收录了2011年CLIVAR S04P科考航次中采集的海洋悬浮颗粒物内的生源硅（biogenic silica）与岩源硅（lithogenic silica）浓度，单位为微摩尔每升（µmol/L）。该航次于2011年2月19日至4月19日搭乘RVIB Nathaniel B. Palmer号考察船执行，沿南大洋太平洋海域的南纬67度平行线布设采样航线，采样范围覆盖罗斯海至南极半岛西部海域。本次采样采用无污染痕量金属采水架（搭载12升特氟龙涂层GO-Flo采水瓶）采集上层1000米深度的海水样本。样本采集工作由夏威夷大学马诺阿分校的Chris Measures博士、佛罗里达州立大学的William Landing博士与Brian Kilgore先生共同完成，样本处理工作由佛罗里达州立大学的Pete Morton博士在多尔芬岛海洋实验室Jeffrey Krause博士的实验室中开展。本数据集可作为硅质浮游植物（siliceous phytoplankton）尤其是硅藻（diatoms）的丰度与生物地理分布的替代指标。