Particulate organic carbon (POC) measurements from CTD bottle samples collected during the Atlantic Meridional Transect cruise AMT24 (JR20140922/JR303) between September and November 2014.

This dataset originates from the analysis of samples collected in the upper 500 m of the Atlantic Ocean, during the cruise AMT24 (JR20140922/JR303). Samples were generally collected at 6 depths using 20 L Niskin bottles, and immediately filtered through pre-combusted (4 hours at 500 degrees Celsius) GF/F filters (0.7 µm) under low vacuum (< 10 in Hg). Samples were stored in pre-combusted aluminium envelopes, flash-frozen in liquid nitrogen and stored at -80 degrees Celsius. POC was analysed for C content using a CHN analyser (FlashEA 1112 Elemental Analyzer). POC concentrations were calibrated using known quantities of acetanilide standards. These data are available under the most recent version of the NERC Open Data Licence.