Resources

RV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018)

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Neil Armstrong (33VB)
Cruise identifierAR30-04 (F2018-007, OSNAP East 2018)
Cruise period2018-07-01 — 2018-07-29
StatusCompleted
Port of departureReykjavík, Iceland
Port of returnReykjavík, Iceland
PurposeResearch
ObjectivesThis research is part of the US-led project Overturning in the Subpolar North Atlantic Program (OSNAP), an effort to determine the strength of the meridional overturning circulation and associated heat and freshwater fluxes in the subpolar North Atlantic. It is a collaborative program with scientists from several nations, including the UK, Netherlands, Germany, France, Canada and China. Scientists from the US, UK and Netherlands participated in this cruise.

The UK objectives of cruise AR30-04 were to:

1. Recover and redeploy three moorings in the Rockall Trough; deploy three moorings in the Iceland Basin (two replacing US moorings and one new mooring).
2. Conduct standard CTDO2 (Conductivity-Temperature-Depth-Dissolved Oxygen) and Lowered ADCP (Acoustic Doppler Current Profiler) stations at approximately 80 stations along the same mooring line, with water sampling at selected sites for salinity, dissolved oxygen, dissolved inorganic carbon, nutrients (nitrate, silica, phosphate), and nitrogen and silica isotopes.
3. To deploy Argo floats at two locations along the section.
4. To collect invertebrates colonizing mooring hardware for micro-plastics analysis.
Chief scientistWilliam E Johns (Rosenstiel School of Marine and Atmospheric Science)
ProjectUK - Overturning in the Subpolar North Atlantic Programme (UK-OSNAP)
Cruise reportRV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) cruise report neilarmstrong_ar30-04.pdf (4.18 MB) 
NPRCRV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) NPRC neilarmstrong_ar30-04.pdf (0.06 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificIceland Basin, Hatton Bank and west of the Reykjanes Ridge
Track chartsRV Neil Armstrong AR30-04 (F2018-007, OSNAP East 2018) cruise track — neilarmstrong_ar30-04trk.pdf (0.26 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of stations = 101
Description: CTD/LADCP stations were conducted during the cruise At each station, profiles of temperature, salinity (conductivity), dissolved oxygen concentration, fluorescence, turbidity, and light transmission/attenuation were collected using a Sea-Bird SBE-911plus CTD system.
Transparency (eg transmissometer)Quantity: number of stations = 101
Description: CTD/LADCP stations were conducted during the cruise At each station, profiles of temperature, salinity (conductivity), dissolved oxygen concentration, fluorescence, turbidity, and light transmission/attenuation were collected using a Sea-Bird SBE-911plus CTD system.
Current profiler (eg ADCP)Quantity: number of stations = 101
Description: CTD/LADCP stations were conducted during the cruise At each station, profiles of temperature, salinity (conductivity), dissolved oxygen concentration, fluorescence, turbidity, and light transmission/attenuation were collected using a Sea-Bird SBE-911plus CTD system.
Chemical oceanography 
OxygenQuantity: number of stations = 101
Description: CTD/LADCP stations were conducted during the cruise At each station, profiles of temperature, salinity (conductivity), dissolved oxygen concentration, fluorescence, turbidity, and light transmission/attenuation were collected using a Sea-Bird SBE-911plus CTD system.
OxygenQuantity: number of stations = 101
Description: Water samples from the CTD - Salinity, dissolved oxygen, nutrients (dissolved inorganic carbon, nutrients, and nitrogen and silica isotopes)
Carbon dioxideQuantity: number of stations = 101
Description: Water samples from the CTD - Salinity, dissolved oxygen, nutrients (dissolved inorganic carbon, nutrients, and nitrogen and silica isotopes)
NitrateQuantity: number of stations = 101
Description: Water samples from the CTD - Salinity, dissolved oxygen, nutrients (dissolved inorganic carbon, nutrients, and nitrogen and silica isotopes)
SilicateQuantity: number of stations = 101
Description: Water samples from the CTD - Salinity, dissolved oxygen, nutrients (dissolved inorganic carbon, nutrients, and nitrogen and silica isotopes)
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 101
Description: CTD/LADCP stations were conducted during the cruise At each station, profiles of temperature, salinity (conductivity), dissolved oxygen concentration, fluorescence, turbidity, and light transmission/attenuation were collected using a Sea-Bird SBE-911plus CTD system.
Moorings, landers, buoys 
Physical oceanography 
Current meters57° 28' 9" N  12° 42' 20" W — RTWB1. Depth 1601. Recovered 06/07/2018
Current meters57° 59' 23" N  21° 8' 46" W — IB4. Depth 2920. Deployed 04/07/2018
Current meters57° 28' 18" N  12° 18' 40" W — RTWB2. Depth 1801. Recovered 09/07/2018
Current meters57° 48' 3" N  19° 10' 14" W — IB5. Depth 951. Deployed 05/07/2018
Current meters57° 28' 9" N  12° 18' 48" W — RTWB2. Depth 1801. Deployed 09/07/2018
Current meters57° 59' 24" N  24° 21' 11" W — IB3. Depth 2854. Deployed 03/07/2018
Current meters57° 28' 12" N  12° 42' 15" W — RTWB1. Depth 1597. Deployed 06/07/2018
Current meters57° 5' 58" N  9° 33' 47" W — RTEB1. Depth 1801. Deployed 08/07/2018
Current meters57° 6' 1" N  9° 33' 49" W — RTEB1. Depth 1817. Recovered 07/07/2018
Current profiler (eg ADCP)57° 59' 23" N  21° 8' 46" W — IB4. Depth 2920. Deployed 04/07/2018
Current profiler (eg ADCP)57° 48' 3" N  19° 10' 14" W — IB5. Depth 951. Deployed 05/07/2018
Current profiler (eg ADCP)57° 5' 50" N  9° 20' 6" W — RTADCP1. Depth 750. Deployed 07/07/2018
Other physical oceanographic measurements57° 28' 9" N  12° 42' 20" W — RTWB1. Depth 1601. Recovered 06/07/2018
Other physical oceanographic measurements57° 5' 50" N  9° 20' 6" W — RTADCP1. Depth 750. Deployed 07/07/2018
Other physical oceanographic measurements57° 6' 1" N  9° 33' 49" W — RTEB1. Depth 1817. Recovered 07/07/2018
Other physical oceanographic measurements57° 59' 24" N  24° 21' 11" W — IB3. Depth 2854. Deployed 03/07/2018
Other physical oceanographic measurements57° 28' 9" N  12° 18' 48" W — RTWB2. Depth 1801. Deployed 09/07/2018
Other physical oceanographic measurements57° 59' 23" N  21° 8' 46" W — IB4. Depth 2920. Deployed 04/07/2018
Other physical oceanographic measurements57° 48' 3" N  19° 10' 14" W — IB5. Depth 951. Deployed 05/07/2018
Other physical oceanographic measurements57° 5' 58" N  9° 33' 47" W — RTEB1. Depth 1801. Deployed 08/07/2018
Other physical oceanographic measurements57° 28' 12" N  12° 42' 15" W — RTWB1. Depth 1597. Deployed 06/07/2018
Other physical oceanographic measurements57° 28' 18" N  12° 18' 40" W — RTWB2. Depth 1801. Recovered 09/07/2018
Data held at BODC Get data
Series/Profiles 
13  Acoustic current meter
Reference numbers
Moored instrument depth
Date and time
Raw current meter output parameters
Engineering parameters
Temperature of the water column
Platform or instrument orientation
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)
Reference numbers
Moored instrument depth
Date and time
Raw current meter output parameters
Engineering parameters
Temperature of the water column
Platform or instrument orientation
Vertical velocity of the water column (currents)
Horizontal velocity of the water column (currents)

BODC idDate/TimeLocationDoc.
20278672018-07-08 15:00  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2027867
20279472018-07-06 17:00  — 2020-10-14 07:00 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2027947
20279962018-07-09 23:00  — 2020-10-14 07:00 57° 28' 9" N  12° 18' 48" W  View metadata report for BODC series reference number 2027996
20279842018-07-09 23:00  — 2020-10-14 07:00 57° 28' 9" N  12° 18' 48" W  View metadata report for BODC series reference number 2027984
20278802018-07-08 15:00  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2027880
20279352018-07-06 17:00  — 2020-10-14 07:00 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2027935
20279592018-07-06 17:00  — 2020-10-14 07:00 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2027959
20279722018-07-09 23:00  — 2020-10-14 07:00 57° 28' 9" N  12° 18' 48" W  View metadata report for BODC series reference number 2027972
20278922018-07-08 15:00  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2027892
20278792018-07-08 15:00  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2027879
20279602018-07-06 17:00  — 2020-10-14 07:00 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2027960
20279112018-07-08 15:00  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2027911
20279232018-07-06 17:00  — 2020-10-14 07:00 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2027923
23  Moored CTD
Reference numbers
Moored instrument depth
Date and time
Temperature of the water column
Electrical conductivity of the water column
Reference numbers
Moored instrument depth
Date and time
Temperature of the water column
Electrical conductivity of the water column

BODC idDate/TimeLocationDoc.
20420282018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2042028
20421692018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042169
20419902018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2041990
20420532018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2042053
20420652018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2042065
20420892018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042089
20421332018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042133
20421702018-07-09 22:30  — 2020-10-14 06:30:01 57° 28' 9" N  12° 18' 48" W  View metadata report for BODC series reference number 2042170
20419892018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2041989
20420162018-07-08 17:00:01  — 2020-10-12 10:00:03 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2042016
20421082018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042108
20421572018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042157
20419652018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2041965
20420042018-07-08 17:01:12  — 2020-10-12 10:01:11 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2042004
20420772018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042077
20421822018-07-09 22:30  — 2020-10-14 06:30:02 57° 28' 9" N  12° 18' 48" W  View metadata report for BODC series reference number 2042182
20420902018-07-06 17:30  — 2020-10-14 06:30:02 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042090
20419532018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2041953
20421452018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042145
20420412018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2042041
20419772018-07-08 17:00:01  — 2020-10-12 10:00 57° 5' 58" N  9° 33' 47" W  View metadata report for BODC series reference number 2041977
20421212018-07-06 17:00:01  — 2020-10-14 06:30:01 57° 28' 12" N  12° 42' 15" W  View metadata report for BODC series reference number 2042121
20421942018-07-09 22:30  — 2020-10-14 06:30:01 57° 28' 9" N  12° 18' 48" W  View metadata report for BODC series reference number 2042194
Discrete samples 
6  Instrument mooring