Particulate light absorption coefficients (350 – 750 nm) measured using the filter pad method during the Antarctic Circumnavigation Expedition (ACE) during the austral summer of 2016/2017.

Dataset abstract

This dataset contains filter pad method measurements of particulate light absorption by particles sampled during the Antarctic Circumnavigation Expedition (ACE) Leg 1-3. Water samples were collected from the underway seawater supply every 3 hours and at multiple depths from selected CTD (conductivity, temperature and depth) rosette deployments. Seawater samples were filtered onto glass fibre filters, preserved and optical density measured using a spectrophotometer. Absorption coefficients for particulate matter were calculated from optical density measurements. The dataset also contains a small set of measurements of absorption by non-pigmented particles (non-algal particulates) measured after a methanol bleaching protocol. These measurements contribute to the determination of the inherent optical properties of the waters sampled during ACE, specifically the absorption of UV and visible wavelengths by particulate material.

Dataset contents

README.txt, metadata, text

data_file_header.txt, metadata, text

ace_UW_particulate_absorption_metadata_20200819CMRRSGCUR.csv, metadata, comma-separated values

ace_UW_particulate_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values

ace_CTD_particulate_absorption_metadata_20200819CMRRSGCUR.csv, metadata, comma-separated values

ace_CTD_particulate_absorption_20200819CMRRSGCUR.csv, data file, comma-separated values

ace_UW_nonalgal_30m_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values

ace_UW_nonalgal_90m_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values

ace_UW_nonalgal_24h_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values

ace_UW_depig_24h_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values

ace_UW_depig_30m_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values

ace_UW_depig_90m_absorption_20200612CMRRSGCUR.csv, data file, comma-separated values