Temperature and Salinity measured by a flow-through thermosalinograph (TSG) during research cruises aboard the R/V Tiglax and R/V Woldstad for the Northern Gulf of Alaska (NGA) LTER site, 2018 and 2019

This dataset consists of temperature and salinity measurements from a flow-through thermosalinograph (TSG) aboard multiple cruises for the Northern Gulf of Alaska Long Term Ecological Research (NGA LTER) project. Three cruises occurred during each of 2018 and 2019 - spring, summer, and fall. These data were collected during the cruises performed by the non-UNOLS vessels the R/V Tiglax and R/V Woldstad. Data collected during cruises aboard the UNOLS vessel R/V Sikuliaq were separated into a companion data set because the underway systems are so different. Specifically, these data were collected during the R/V Tiglax cruises in Fall 2018, Spring 2019, and Fall 2019, and on the R/V Woldstad during the Summer 2018 cruise. These data were collected with a SeaBird Electronics (SBE) thermosalinograph - either a SBE-21 or SBE-45. This data stream was combined with data from the ship's navigation software, and time offsets between the two were corrected by hand. Data were averaged into 1 minute ensembles and inspected for major quality issues. The TSG was running for most of each cruise, however data is of lower quality when the ship was stationary and/or the pump was turned off, so data during these times was removed. The final data for each cruise was output as a CSV file. These data are part of the Northern Gulf of Alaska Long Term Ecological Research (NGA LTER) program. 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.