Chlorophyll-a concentrations in seawater collected near the BATS station during R/V Atlantic Explorer cruises AE2113 (July 2021) and AE2303 (January 2023)

This dataset includes the concentrations of Chlorophyll a (Chl a) determined in 0.2 µm-filtered seawater samples collected from the Bermuda Atlantic Time-series Study (BATS) station during a summer cruise in 2021 and a winter cruise in 2023. The Chl a concentration in each sample was quantified by fluorescence under subdued lighting using a Turner Designs model AU-10 fluorometer by Dr. Joanna Kinsey. This dataset was compiled by Dr. Lei Xue under the supervision of Dr. David Kieber at the State University of New York, College of Environmental Science and Forestry. These data were used to evaluate the seasonal variation of primary productivity at the BATS station. This work is part of a larger study to understand the seasonal variability in the fraction of refractory organic carbon in primary marine aerosol at the BATS station.