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.