Surface summer phytoplankton pigment concentrations measured by HPLC during the SANAE-56 cruise in the Atlantic Southern Ocean between December 2016 and February 2017

Surface phytoplankton photosynthetic pigment concentrations were collected during the logistical austral summer cruise SANAE-56 from December 2016 to February 2017 on board the SA Agulhas II in the Atlantic sector of the Southern Ocean. The cruise consisted of various legs that covered a transect between Cape Town and Antarctica (primarily on the zero meridian) and a transect between Antarctica and South Georgia crossing the Weddell Gyre and the South Sandwich Islands. Discrete seawater samples, for chlorophyll-a and accessory pigment analysis, were taken at relatively high (