This dataset contains near-surface measurements of oceanographic, meteorological and physical data collected in situ during a survey of the eastern Bering Sea shelf conducted by three autonomous surface vehicles (USVs, Saildrones (SD) 1043, 1046, and 1049). The saildrones were used to conduct an acoustic survey of walleye pollock (Gadus chalcogrammus) in the US economic exclusive zone in summer 2020. This survey is traditionally conducted with crewed research vessels, but was conducted with USVs asin response to the cancellation of the ship-based surveys due to safety concerns associated with COVID-19 pandemic. The USV survey was conducted on 14 transects spaced 74 km apart spanning the ~80 m to ~1000m depth contour, with SD 1046 sampling in the south, SD 1046 in the center, and SD 1049 in the north portion of the survey area. All available data are included, which encompass the survey and a portion of the transit to the survey area. The saildrones were equipped with a variety of sensors and instruments consisting of thermosalinograph, echo sounder, oxygen optode, fluorometer, SST IR pyrometer, anemometer, meteorological probe, digital and barometer. The oceanographic measurements include skin temperature, salinity, water temperature, water skin temperature, chlorophyll-a, and dissolved oxygen. The atmospheric measurements consist of wind speed and direction, air temperature, relative humidity and air pressure. All the data are in netCDF-CF (underway) format. These data are experimental and have not been quality controlled. These data are made available at the user’s own risk. Users will need to do quality control when using these data. The data from the echosounder will be separately archived at NCEI’s water column sonar data archive.

This is an archive of underway meteorological and TSG data from the Bering Strait mooring cruise on the research vessel Norseman II, from Nome to Nome (AK), 4th-14th July 2023. This cruise collected the following underway data: - meteorological data - thermosalinograph data - ship's ADCP data (not included in this dataset) For an overview of previous and on-going Bering Strait mooring work and suggested references please see the Documentation. For queries, please contact: Rebecca Woodgate woodgate@uw.edu (206) 221-3268 Polar Science Center, Applied Physics Lab, University of Washington 1013 NE 40th, Seattle, WA 98105-6698 USA ------------------------------------------------------------------------------ Meta data ========= 1) Platform: Research vessel NorsemanII, operated by Support Vessels of Alaska, SVA. 2) Project title: Bering Strait 3) Data collection dates: 4th-14th July 2023 for meteorological data 4th-14th July 2023 for thermosalinograph (TSG) data (note start of salinity data 5th July 2023, 22:15 local - 6th July 2023, 06:15GMT) 4th-14th July 2023 for ADCP data 4) PI: Rebecca Woodgate (woodgate@uw.edu) 5) Data collection method: Underway sampling from built-in ship's sensors 6) Data calibration method: No special calibration. = meteorological data are unaltered from operational output of the sensors = thermosalinograph data use the latest available, pre-cruise calibrations (Dec 2016) 7)Instrumentation used: = meteorological data, using ship-mounted sensors - Airmar 220WX Weather caster 153, installed 2021 = thermosalinograph data from sea water intake 3.4m below water line (slightly - SBE21 Temperature and Conductivity sensor, in the engine room - SBE38 Temperature sensor, near the seawater intake = hull mounted RDI 300kHz Workhorse Mariner ADCP (SN 19355) with bottom tracking, mounted 3m below water line. 8)Quality Control procedures: Data provided as recorded, with no detailed quality control. 9) Data format: = meteorological data - ASCII, format given in individual headers = thermosalinograph - ASCII, format given in individual header (.hdr, .hex and .XMLCON files also provided) 10) Data Collection problems: = meteorological data - this is the third year this met system has been in use on the Norseman 2. A comparison between met data from the previous system and ERA, JRA and NCEP data, suggested that the 2021 data from the new system were too high (~2m/s) for wind speed, too low (~2degC)for temperature, and too low (~2hPa) for air pressure. That was based on a calibration done under less than ideal conditions. The system was recalibrated before the 2022 cruise, in the anticipation that would improve the data, however it has not yet been possible to make the same comparison to the ERA, JRA, and NCEP data to see if this has indeed fixed the issue. = thermosalinograph - raw Julian Day from Seasave system subject to GPS Roll over error. This is corrected in the data archived. - seachest was erroneously isolated from seawater intake at start of cruise. This was corrected 6th July 0615 GMT. Seachest data before this time are not measuring in situ water, and thus values have been set to a dummy value of 9999. This problem did not affect intake temperature. - raw depth data were frequently noisy. Flyers over 62m have been linearly interpolated from neighboring points 11) Other related data sets: = these data were taken on a mooring deployment cruise, which placed 3 moorings (A2-23, A3-23, A4-23) in the Bering Strait region. These moorings are part of a long-term time-series started in 1990 = prior mooring cruises to the region have collected underway data. For an overview, see PI web site in the Documentation. 12) Conditions of use: Data freely available. Please, as a courtesy, contact the PIs before using these data and cite project as using citations given in the Documentation section. 13) Data qualifications or warnings = See data collection issues 14) Grant numbers Sponsorship for the cruise came from - National

The Conductivity, Temperature and Depth (CTD) and other data were collected in NW Pacific (limit-180), NE Pacific (limit-180), Greenland Sea and Bering Sea as part of Fisheries-Oceanography Coordinated Investigations (FOCI). Data was collected from NOAA Ship MILLER FREEMAN. The data was collected over a period spanning from April 4, 1992 to September 25, 1992. Data from 197 casts was submitted in one tape by Ms. Leslie Lawrence. Data has been processed and is available in F022-CTD-Hi Resolution file format of NODC. F022 High-resolution CTD data is collected from high resolution (conductivity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1 m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t) and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals.

Physical, current, and other data from CTD and current meters from FIXED PLATFORMS in the Bering Sea from 25 February 1998 to 10 October 2001. Data were collected by the Pacific Marine Environmental Laboratory (PMEL) in support of the Fisheries-Oceanography Coordinated Investigations (FOCI) project. CTD parameters include temperature, conductivity, salinity, and fluorescence. Current meter parameters include East/West velocity components (U), North/South velocity component (V), current speed, current direction, turbidity, pressure, and temperature. Data are not in standard formats but are self documenting.

This is an archive of data from moorings deployed in Bering Strait from summer 2014 to summer 2015. Mooring deployments were funded by the NSF-Arctic Observing Network award PLR-1304052 (PI: Woodgate, Heimbach and Nguyen), in collaboration with the NOAA RUSALCA (Russian-US Long Term Census of the Arctic) program. For 2014 to 2015, a total of three moorings were deployed: two moorings (A2 and A4) in the US channel of the strait, and one mooring (A3) at a site just north of the strait. Sites A2, and A3 were established in 1990. A2 and A3 have been occupied almost continuously (all years except 96-97) since then. Site A4 was established in 2001. Mooring location A2 is in the middle of the eastern (Alaskan side) channel. Mooring location A3 is just north of the strait, immediately east of the Russian-US EEZ (Exclusive Economic Zone) line. Experience has shown that site A3 samples both eastern and western channel water. Mooring location A4 is close to the Alaskan coast and allows measurement of the Alaska Coastal Current.