Chl a from discrete bottles samples from the Cal Poly Pier, 2017-present.

Water for chlorophyll a is sampled from three depths (~1, 4 and 9 m) using niskin bottles attached to a CTD rosette.The concentration of chlorophyll a is determined by filtering water though filters of differing pore sizes including a GFF (nominal pore size 0.7 µm) and 3 µm filter. These samples are extracted in 90% acetone and analyzed fluorometrically using a Triology Fluorometer.