CTD profile time series data from the GAK1 project, 2012-2016, Gulf Watch Alaska Environmental Drivers Component

This data is part of the Gulf Watch Alaska (GWA), Environmental Drivers component of the Exxon Valdez Oil Spill Trustee Council, project numbers 12120114P, 13120114P, 14120114P, 15120114P, 16120114P. Gulf Watch Alaska is the long-term ecosystem monitoring program of the Exxon Valdez Oil Spill Trustee Council for the marine ecosystem affected by the 1989 oil spill. This dataset describes CTD readings from the GAK1 oceanographic station in Prince William Sound. Located at the mouth of Resurrection Bay near Seward, Alaska, temperature and salinity versus depth profiles have been taken at GAK1 since December, 1970. This multi-decade time series is one of the longest running oceanographic time series in the North Pacific. This dataset includes a single ASCII-formatted '.dat' file containing CTD profile data 1970-2016. This file provides the code for the cruise that collected the profile, the station number of the GAK1 CTD profile on the cruise that collected the data, the date (in decimal year) of the profile, as well as depth (m), temperature (C), salinity (ppt), seawater density (sigma-t), and delta-D.