Timeseries of temperature, salinity, ADCP velocity with ice track, nitrate, fluorescence, turbidity, dissolved oxygen collected from Bering Strait Moorings A2, A3, A4 in Bering Strait from 2024-09-11 to 2025-07-03 (NCEI Accession 0312788)

Bering Strait Moorings 2024-2025
This is an archive of data from moorings deployed in Bering Strait from summer 2024 and to summer 2025. Mooring deployments were funded by the NSF-Arctic Observing Network award PLR-2153942 (PIs: Woodgate and Peralta-Ferriz).
The mooring work required 2 dedicated cruises:
- in 2024 (8th - 18th Sept), a ~ 11 day cruise on the US vessel Norseman2 deployed the moorings.  Some CTD sections were run on this cruise, and those data are archived separately.
- in 2025 (2nd - 10th July), a ~ 9 day cruise on the US vessel Norseman2 recovered the moorings.  Some CTD sections were run on this cruise, and those data are archived separately.
In 2024, a total of three moorings were deployed:
- two moorings (A2 and A4) in the US channel of the strait,
- one mooring (A3) at a site just north of the strait.
In what follows, mooring names include a two digit suffix to represent year of deployment.
In 2025, all three moorings were successfully recovered.
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 Alaskan Coastal Current.
For an overview of previous and on-going Bering Strait mooring work,
please see http://psc.apl.washington.edu/BeringStrait.html.
Moorings carry a variety of instruments, listed in the table below. All records are year-round, sampling hourly or more frequently (Time Int. in table below).
Data from instruments marked with * are not included in this archive.
For access to these data, please contact the named PI in list below table.
12345678901234567890123456789012345678901234567890123456789012345678901234567
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ID  Deployed Latitude  Longitude  Instrument      S/N  Time   Inst.  Water
     in Year   (N)        (W)                          Int.   Depth  Depth
--------------------------------------------------------------------------
A2-24  2024  65 46.83  168 34.08  ISCAT         24297  10min 16m/22m    56m
                                  ISCAT-Logger     24  30min   ...      56m
                                  300kHz-ADCP    2234  30min   46m      56m
                                  SBE37-ODO	24443  60min   49m      56m
                                  FLNTUSB        7566  60min   49m      56m
                                  SUNA           1920  60min   49m      56m
                                  SBE37         24435  10min   50m      56m
A3-24  2024  66 19.63  168 57.06  Upper ISCAT   24425  10min 6m/23m/30m 58m
                                  Lower ISCAT   24426  10min  15m/21m   58m
                                  ISCAT-Logger     27  30min   ...      58m
	                          300kHz-ADCP   12845  30min   43m      58m
                                  SBE37(IM)     24307  60min   43m      58m
                                  SBE37-ODO	24444  60min   46m      58m
                                  FLNTUSB        1260  60min   46m      58m
                                  SUNA           1918  60min   46m      58m
                                  *SOUNDTRAP     6079    -     49m      58m
A4-24  2024  65 44.76  168 15.75  ISCAT         20935     NR   16m      49m
                                  ISCAT-Logger     03  30min   ...      49m
                                  300kHz-ADCP   13756  30min   37m      49m
                                  SBE37         23154  10min   41m      49m
                                  FLNTUSB        7565  60min   41m      49m
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Depths are estimated from mooring design and pressure sensors where available,
and are good to 1-2m.
  NR=instrument not recovered     ND=No data
  Where ISCATS change recording depth when floatation is lost, all depths are given
Instruments with data included here:
 ISCAT - SBE37IM in ice resistant float, telemetering data inductively to
   a Logger below (system developed at APL-UW). Logger data only used if
   SBE37s are not recovered.
 300KHz-ADCP - 300kHz RDI/Teledyne Workhorse Acoustic Doppler Current Profiler
 SBE37 Microcat - Seabird SBE 37 Temperature Salinity Pressure recorder
 SBE37-ODO - Seabird SBE37 Temperature Salinity Pressure recorder
           with SBE63 Dissolved oxygen sensor
 FLNTUSB - Wetlabs Fluorescence Turbidity sensor
 SUNA - Seabird SUNA V2 Nitrate sensor
Instruments with data not included here:
 SBE16woptic - Seabird SBE16plus with optical data (including some or all of
               fluorescence, turbidity, transmissivity and PAR) - see headers
 SBE26p-BPG - Seabird SBE26plus Bottom Pressure Gauge
 RCM9Turb - Aanderaa RCM9 acoustic current meter with turbidity sensor
 RCM9LW   - Aanderaa Lightweight RCM9 acoustic current meter
 AARI-CM&CTD - Current meter and CTD from AARI (Arctic and Antarctic Research
               Institute, Russia), PI: Igor Lavrenov, AARI
 ISUS - ISUS Nitrate sensor, PI: Terry Whitledge, UAF
 AURAL M2* - Aural Marine Mammal Acoustic Recorder, PI: Kate Stafford, UW
 APL Marine Rec* - APL Marine Recorder, PI: Kate Stafford, UW.
 Soundtrap - APL Marine Mammal Recorder, PI: Kate Stafford UW.
Each data file contains the data from one instrument-year - the listed year
in the mooring name is the year in which the mooring was deployed.
For non-ADCP instruments, calibrated data are recorded in one file per instrument
per year, with naming convention:
   BeringStrait_yyyy_ID_III_#####.ttt
yyyy=Deployment year; ID=mooring ID; III=instrument type; #####=serial number;
ttt=indicates calibration, with .pre=pre-deployment calibration used,
.ppp=pre and post deployment calibrations merged.
For some instruments (e.g., SBE16,37, SUNA, ADCP, raw data files and calibration
information are also included.  See file listings.
For the ADCPs, there are multiple files per instrument.
   BeringStrait_yyyy__ID_#####ADCPraw.000 = Binary download from the ADCP
(see notes below for multiple .000 files)
   BeringStrait_yyyy__ID_#####_ADCPdeploytests.txt = pre deployment tests
   BeringStrait_yyyy__ID_#####_ADCPrecoverytest.txt = post deployment tests
The remainder are ASCII conversions of the data, corrected for clock drift
and magnetic declination.
   BeringStrait_yyyy__ID_#####.btm = ASCII bottom track data
        (including ice range and velocity)
   BeringStrait_yyyy__ID_#####.ins = ASCII instrument data
        (e.g. heading, pitch, roll, temperature)
   BeringStrait_yyyy__ID_#####_bin01.rdat = ASCII water velocity data in Bin 1
   BeringStrait_yyyy__ID_#####.bin02.rdat = ASCII water velocity data in Bin 2
    etc.  (Bin depths are given in the data files)
Header information is included in each data file.
-----------------------------------------------------------------------------
For details of the measurements and their interpretation, please see:
   Woodgate, R.A., K.M.Stafford and F.G.Prahl (2015) A synthesis of
   year-round interdisciplinary mooring measurements in the Bering
   Strait (1990-2014) and the RUSALCA years (2004-2011), Oceanography
   28(3):46-67, doi:10.5670/oceanog.2015.57
and
   Woodgate, R.A., 2018, Increases in the Pacific inflow to the Arctic
   from 1990 to 2015, and insights into seasonal trends and driving
   mechanisms from year-round Bering Strait mooring data,
   Progress in Oceanography, 160, 124-154, doi:10.1016/j.pocean.2017.12.007.
Please use both 2015 and 2018 citations for these data.
For an overview of cruises and project, please see:
   http://psc.apl.washington.edu/BeringStrait.html
For relevant papers, please see:
Roach, A.T., K. Aagaard, C. H. Pease, S.A. Salo, T. Weingartner, V. Pavlov,
   and M. Kulakov (1995) Direct measurements of transport and water properties
   through Bering Strait, J. Geophys. Res., 100, 18,443-18,457.
Woodgate, R.A., and K. Aagaard (2005) Revising the Bering Strait freshwater
   flux into the Arctic Ocean, Geophys. Res. Lett., 32, L02602,
   doi:10.1029/2004GL021747.
Woodgate, R.A., K. Aagaard, and T. Weingartner (2005) Monthly temperature,
   salinity, and transport variability of the Bering Strait throughflow,
   Geophys. Res. Lett., 32, No. 4, L04601, doi:10.1029/2004GL021880.
Woodgate, R. A., K. Aagaard, and T. J. Weingartner (2005) A year in the
   physical oceanography of the Chukchi Sea: Moored measurements from autumn
   1990-1991,Deep-Sea Res., Part II, 52, 3116-3149,
   doi: 10.1016/j.dsr2.2005.10.016.
Woodgate, R. A., K. Aagaard, and T. J. Weingartner (2006) Interannual changes
   in the Bering Strait fluxes of volume, heat and freshwater between 1991
   and 2004, Geophys. Res. Lett., 33, L15609, doi:10.1029/2006GL026931.
Woodgate, R. A., T. Weingartner, and R. Lindsay (2010), The 2007 Bering
   Strait oceanic heat flux and anomalous Arctic sea-ice retreat,
   Geophys. Res. Lett., 37, L01602, doi:10.1029/2009GL041621.
Woodgate, R.A., T. Weingartner, and R. Lindsay (2012), Observed increases
   in Bering Strait oceanic fluxes from the Pacific to the Arctic from
   2001 to 2011 and their impacts on the Arctic Ocean water column,
   Geophys. Res. Lett., 39, L24603, doi:10.1029/2012GL054092.
Woodgate, R.A., (2018), Increases in the Pacific inflow to the Arctic from
   1990 to 2015, and insights into seasonal trends and driving mechanisms
   from year-round Bering Strait mooring data, Progress in Oceanography,
   160, 124-154,  doi:10.1016/j.pocean.2017.12.007.
Woodgate, R.A., and C.Peralta-Ferriz, (2021), Warming and Freshening of the
   Pacific Inflow to the Arctic from 1990-2019 implying dramatic shoaling
   in Pacific Winter Water ventilation of the Arctic water column,
   Geophysical Research Letters, doi:10.1029/2021GL092528
Woodgate, R.A., C.Peralta-Ferriz and L.Jensen, (submitted 2025),
   Pacific-to-Arctic oceanic nitrate fluxes: First Bering Strait overwinter
   nitrate time-series (2022-2024) show winter replenishment and suggest
   decadal flux increase, submitted to Geophysical Research Letters.
All papers are available at our website.
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

Tags: 300khz rdi workhorse adcp, 65k3ct, a3, a4, adcp velocity with ice track, bering strait, bering strait moorings a2, dissolved oxygen, flntusb, fluorescence, nitrate, oceanography, salinity, sbe37, sbe37im, sbe37odo, suna nitrate, timeseries of temperature, turbidity
Organization: National Oceanic and Atmospheric Administration, Department of Commerce