Biophysical ocean measurements (temperature, salinity, chlorophyll a) collected at long-term Mooring site M4 on the eastern Bering Sea shelf, Alaska, by the EcoFOCI group at NOAA, PMEL, 2014-10-17 to 2020-09-03 (NCEI Accession 0306185)

M4. Biophysical moorings deployed 2014-2018 at established NOAA/PMEL data-collection site "M4" on the eastern Bering Sea Shelf resulted in five annual time-series data sets that are presented herein.
Moorings were deployed at the M4 site in the Fall of each year at approximate location 57.89N, 186.9W, NE of the Pribilof Islands, Alaska and SW of Nunivak Island, Alaska; in September 2015, 2016 and 2017, and October in 2014 and 2018. Contract Fishing Vessel Aquila was used for deployments in 2014, 2015, 2016 and 2018 (cruises AQ1401, AQ1501, AQ1601 and AQ1801, respectively). NOAA Ship Oscar Dyson was used for deployment in 2017 (cruise DY1708). Moorings and instruments were left over winter and recovered the following Fall with the exception of the 2018 data set which was left in the water in 2019 due to prohibitive weather conditions and was recovered in 2020. Biophysical subsurface mooring filenames, e.g. 15bs-4a, indicate deployment year (15 for 2015) area (bs is Bering Sea) and defined location ("4" for M4). Instrumentation included SeaBird SBE-37 (Microcat), SBE-39, SBE 56 (temperature sensor) and SBE 16 (Seacat) profilers, and WetLabs EcoFluorometers; instruments and deployed depths varied between years. Data include temperature, conductivity, salinity, pressure, water depth, raw chlorophyll fluorescence and chlorophyll a. The cruise was funded by NOAA, Pacific Marine Environmental Laboratory EcoFOCI program and NOAA Arctic Research Program with additional support from AOOS, the NOAA-regional ocean data partnership. The Ecosystem and Fisheries-Oceanography Coordinated Investigations (EcoFOCI) program is a partnership between NOAA PMEL and NOAA Alaska Fisheries Science center (AFSC). Scientists from PMEL and the University of Washington cooperative institute (CICOES) collaborated in this data collection and the related data processing and analysis. Deployment and recovery operations on this cruise were managed by EcoFOCI personnel from NOAA/PMEL, NOAA/AFSC and UW/CICOES. Mooring time series data were processed at NOAA/PMEL/EcoFOCI using standard techniques. Time is recorded as UTC. Data contacts: Phyllis Stabeno, Shaun Bell, Ryan McCabe, Peggy Sullivan.
Data are in NetCDF, longitudes are in "degree_west".