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 2022-09-11 to 2023-07-13 (NCEI Accession 0297059)

Bering Strait Moorings 2022-2023

This is an archive of data from moorings deployed in Bering Strait from
summer 2022 and to summer 2023.

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 2022 (8th-19th September), a ~ 12 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 2023 (4th-14th July), a ~ 11 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 2022, 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 2023, 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.

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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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A2-22 2022 65 46.85 168 34.10 ISCAT 24298 NR 16m 56m
ISCAT-Logger 28 30min ... 56m
300kHz-ADCP 2234 30min 46m 56m
SBE37-ODO 24443 60min 49m 56m
FLNTUSB 7566 60min 49m 56m
SUNA 1920 60min 49m 56m
SBE16 1226 60min 50m 56m

A3-22 2022 66 19.63 168 56.9 Upper ISCAT 20935 5min 7m/24m 58m
dragged off position by ice Lower ISCAT 24297 5min 16m 58m
on 19th April 2023 0100-1130 ISCAT-Logger 22 30min 58m
300kHz-ADCP 12845 30min 43m 58m
SBE16 1225 60min 43m 58m
SBE37-ODO 24444 60min 46m 58m
FLNTUSB 1260 60min 46m 58m
SUNA 1918 60min 46m 58m
*SOUNDTRAP 7173 - 49m 58m

A4-22 2022 65 44.74 168 15.78 ISCAT 24300 5min 16m 49m
mooring recovered by dragging ISCAT-Logger 24 30min ... 49m
300kHz-ADCP 13756 30min 37m 49m
SBE16 2341 60min 41m 49m
FLNTUSB 7565 60min 41m 49m
--------------------------------------------------------------------------
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 flotation is lost, both 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
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
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:
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.
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
(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.

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For details of the measurements and their interpretation, please see citations in the Documentation and use them for these data.