Pigment data from HPLC analysis of samples from the NGA-LTER research cruises in the Gulf of Alaska from 2019 and 2020.

This data is the pigment concentrations measured with high performance liquid chromatography (HPLC). The water samples for analysis were collected during the NGA-LTER research cruises in 2019 and 2020 during spring, summer and fall. There are two types of data presented. The first is the HPLC pigment data in micrograms per liter of primary, secondary and tertiary pigments as well as total chlorophyll. The second type of data is the predicted phytoplankton community composition based on the HPLC pigment data after analysis with CHEMTAX. The files are from Excel spreadsheets converted to CSV files. These data are part of the Northern Gulf of Alaska Long Term Ecological Research (NGA LTER) program (OCE-1656070). The LTER program is a National Science Foundation–funded network of 28 sites nationwide that focus on the influence of long-term and large-scale phenomenon on ecosystems. Additional funding for sampling is provided by the North Pacific Research Board (NPRB), the Alaska Ocean Observing System (AOOS), and the Exxon Valdez Oil Spill Trustee Council (EVOS) via the Gulf Watch Alaska program.