Physical oceanographic mooring data (temperature, salinity, velocity including ADCP ice tracking) collected from Bering Strait Moorings A2, A3, A4 in Bering Strait from 2015-07-02 to 2016-07-10 (NCEI Accession 0164166)

This is an archive of data from moorings deployed in Bering Strait from summer 2015 to summer 2016. Mooring deployments were funded by the NSF-Arctic Observing Network award PLR-1304052 (PI: Woodgate, Heimbach and Nguyen). The mooring work required 2 dedicated cruises:
- in 2015 (1st - 9th July), a ~ 9 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 2016 (7th - 15th July), a ~ 9 day cruise on the US vessel
Norseman2 deployed the moorings. Some CTD sections were run on this cruise, and those data are archived separately. For 2015 to 2016, 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. 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. 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
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A3-15 2015 66 19.60 168 57.04 ISCAT 13001 NR 15m 56m
ISCAT-Logger 21 30min ... 56m
300kHz-ADCP 2269 30min 42m 56m
SBE16 1700 60min 43m 56m
AURAL M2* 235 - 48m 56m

A2-15 2015 65 46.86 168 34.08 ISCAT 5591 5min 14m 54m
ISCAT-Logger 24 30min ... 54m
300kHz-ADCP 2232 30min 44m 54m
AURAL M2* 234 - 48m 54m
SBE16 1224 60min 49m 54m

A4-15 2015 65 44.76 168 15.77 ISCAT 13002 NR 14m 47m
ISCAT-Logger 06 30min ... 47m
300kHz-ADCP 2234 30min 36m 47m
AURAL M2* 246 - 40m 47m
SBE16 1698 60min 41m 47m
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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
Instruments with data included here:
ISCAT - SBE37IM in ice resistant float, telemetering data inductively to
a Logger below (system developed at APL-UW)
300KHz-ADCP - 300kHz RDI/Teledyne Workhorse Acoustic Doppler Current Profiler
SBE37 Microcat - Seabird SBE 37 Temperature Salinity Pressure recorder
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
Instruments with data not included here:
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

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.
Optics data from the SBE instruments are included in this archive only
in the hex files (unconverted). For calibration data, please contact
Tom Weingartner, UAF.

For RCMs and SBEs, 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.
The SBE-16 and 37 hexidecimal files (unaltered from the download) are also
included, indicated by extension .hex or .asc

For the ADCPs, there are multiple files per instrument.
BeringStrait_yyyy__ID_#####ADCPraw.000 = Binary download from the ADCP
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.

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For details of the measurements and their interpretation, 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.

For an overview, please see:
http://psc.apl.washington.edu/BeringStrait.html
and
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

For queries, please contact:
Rebecca Woodgate [e-mail] [phone]
Polar Science Center, Applied Physics Lab, University of Washington
1013 NE 40th, Seattle, WA 98105-6698 USA FAX [phone]

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