Underway meteorological and thermosalinograph data collected from Norseman II in Bering Strait and Southern Chukchi Sea from 2023-07-04 to 2023-07-14 (NCEI Accession 0289698)

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
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Meta data
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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 Science Foundation (NSF) Arctic Observing Network (AON) program, grant PLR-2153942 (PI: Woodgate and Peralta-Ferriz)
15) Sample repository locations:
National Centers for Environmental Information, PI web site at the University of Washington (see the Documentation).