Resources

RRS Discovery DY029 (GApr04 Leg2)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74EQ)
Cruise identifierDY029 (GApr04 Leg2)
Cruise period2015-04-01 — 2015-04-29
StatusCompleted
Port of departureSouthampton, United Kingdom
Port of returnSouthampton, United Kingdom
PurposeResearch
ObjectivesDY029 was funded as part of NERCs Shelf Sea Biogeochemistry (SSB) programme, as the second of the pelagic set of cruises and the second cruise in 2015. The SSB programme aims to reduce uncertainty in our process understanding of the cycling of nutrients and carbon, and the controls on primary and secondary production in both the UK and NW European shelf seas, and in wider global biogeochemical cycles. The focus of DY029 was to examine biogeochemical and ecological changes during the spring bloom in the Celtic Sea.
The specific objectives of DY029 were:
(a) A time-series of measurements at the Central Celtic Sea (CCS) to observe temporal changes;
(b) To put these measurements into a wider context of process measurements across the Celtic Sea by sampling other process sites (including CS2 at the shelf edge, site A near the Celtic Deep, and CTD stations along transect O between CS2 and CCS, and transect J between between site A and CCS);
(c) To maintain a series of long-term moorings at CCS through recovery and redeployment;
(d) To make iron measurements along three shelf to open ocean transects (as part of the iron work package part of the SSB programme);
(e) To deploy and recover a number of gliders, both on the short term (month long) and long term (three to six months);
(f) To deploy and recover a Wirewalker mooring making high-resolution temporal observations of water column structure and biogeochemistry.
Biogeochemical and ecological process measurements were collected six times at CCS, twice at CS2 and along the O transect once and along the J transect twice. These included state measurements through the water column, as well as rate measurements and incubations and experiments. Two moorings (ADCP string, temperature chain) were successfully recovered and three moorings (ADCP string, temperature chain, ADCP bedframe) were deployed. Four gliders were deployed and recovered during the cruise, while three gliders were deployed for two months and one glider was recovered.
Chief scientistAlex Poulton (National Oceanography Centre, Southampton)
ProjectShelf Sea Biogeochemistry
Coordinating bodyNatural Environment Research Council (NERC)
Cruise reportRRS Discovery DY029 (GApr04 Leg2) cruise report dy029.pdf (3.88 MB) 
Ocean/sea areas 
GeneralCeltic Sea
SpecificCeltic Sea shelf edge and associated canyons
Track chartsRRS Discovery DY029 (GApr04 Leg2) cruise track — dy029trk.pdf (0.20 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 30
Description: Underway surface measurements from TSG, fluorometer, transmissometer
Transparency (eg transmissometer)Quantity: number of profiles = 100
Description: CTD profiles [Stainless Steel (SS) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Transparency (eg transmissometer)Quantity: number of profiles = 40
Description: CTD profiles [Titanium (T) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Transparency (eg transmissometer)Quantity: activity duration in days = 30
Description: Underway surface measurements from TSG, fluorometer, transmissometer
Optics (eg underwater light levels)Quantity: number of profiles = 40
Description: CTD profiles [Titanium (T) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Optics (eg underwater light levels)Quantity: number of profiles = 100
Description: CTD profiles [Stainless Steel (SS) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Current profiler (eg ADCP)Quantity: activity duration in days = 30
Description: Vessel mounted ADCPs (150 kHz and 75 kHz)
Other physical oceanographic measurementsQuantity: number of profiles = 40
Description: CTD profiles [Titanium (T) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Other physical oceanographic measurementsQuantity: number of profiles = 100
Description: CTD profiles [Stainless Steel (SS) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Chemical oceanography 
OxygenQuantity: number of samples = 54
Description: Collection and analysis of sea water samples for community and bacterial respiration rates (SS CTD only)
OxygenQuantity: number of samples = 3
Description: Collection and analysis of sea water samples for carbon remineralization rates of different sinking fractions (Marine snow catcher)
OxygenQuantity: number of samples = 190
Description: Dissolved oxygen samples (from both CTDs)
OxygenQuantity: number of profiles = 40
Description: CTD profiles [Titanium (T) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
OxygenQuantity: number of profiles = 100
Description: CTD profiles [Stainless Steel (SS) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Carbon dioxideQuantity: number of samples = 200
Description: Samples for analysis of oxygen / argon ratios (both CTDs)
Carbon dioxideQuantity: activity duration in days = 30
Description: Underway pCO2 measurements
Carbon dioxideQuantity: number of samples = 195
Description: Samples for analysis of triple O2 isotopes (both CTDs)
Other dissolved gasesQuantity: number of samples = 432
Description: Collection and analysis of sea water samples for determination of N2O and CH4 concentration (both CTDs)
PhosphateQuantity: number of samples = 380
Description: Samples for dissolved nutrient analysis from zooplankton experiments.
PhosphateQuantity: number of samples = 1728
Description: Collection and analysis of dissolved inorganic nutrients (nitrate+nitrite, phosphate, silicic acid and ammonia) in seawater samples (from both CTDs)
PhosphateQuantity: number of samples = 54
Description: Collection, incubation and measurements of primary production, carbon fixation (and DOC production), phosphate uptake (and DOP production), calcite production and size-fractionated (0.2-2 micrometres, 2-20 micrometres and >20 micrometres) primary production (SS CTD only)
Total - PQuantity: number of samples = 358
Description: Collection of dissolved organic matter (DOC, TDN, TDP, DFAA, THAA, CDOM, isotopic N) samples for laboratory analysis (from both CTDs)
NitrateQuantity: number of samples = 20
Description: Collection of sea water samples for determination of nitrate/nitrite and ammonium uptake and recycling (Marine snow catcher)
NitrateQuantity: number of samples = 380
Description: Samples for dissolved nutrient analysis from zooplankton experiments.
NitrateQuantity: number of samples = 170
Description: Collection of sea water samples for determination of nitrate/nitrite and ammonium uptake and recycling (SS CTD only)
NitriteQuantity: number of samples = 170
Description: Collection of sea water samples for determination of nitrate/nitrite and ammonium uptake and recycling (SS CTD only)
NitriteQuantity: number of samples = 20
Description: Collection of sea water samples for determination of nitrate/nitrite and ammonium uptake and recycling (Marine snow catcher)
NitriteQuantity: number of samples = 380
Description: Samples for dissolved nutrient analysis from zooplankton experiments.
NitriteQuantity: number of samples = 1728
Description: Collection and analysis of dissolved inorganic nutrients (nitrate+nitrite, phosphate, silicic acid and ammonia) in seawater samples (from both CTDs)
Total - NQuantity: number of samples = 358
Description: Collection of dissolved organic matter (DOC, TDN, TDP, DFAA, THAA, CDOM, isotopic N) samples for laboratory analysis (from both CTDs)
Total - NQuantity: number of samples = 1728
Description: Collection and analysis of dissolved inorganic nutrients (nitrate+nitrite, phosphate, silicic acid and ammonia) in seawater samples (from both CTDs)
AmmoniaQuantity: number of samples = 170
Description: Collection of sea water samples for determination of nitrate/nitrite and ammonium uptake and recycling (SS CTD only)
AmmoniaQuantity: number of samples = 20
Description: Collection of sea water samples for determination of nitrate/nitrite and ammonium uptake and recycling (Marine snow catcher)
AmmoniaQuantity: number of samples = 380
Description: Samples for dissolved nutrient analysis from zooplankton experiments.
SilicateQuantity: number of samples = 380
Description: Samples for dissolved nutrient analysis from zooplankton experiments.
SilicateQuantity: number of samples = 1728
Description: Collection and analysis of dissolved inorganic nutrients (nitrate+nitrite, phosphate, silicic acid and ammonia) in seawater samples (from both CTDs)
AlkalinityQuantity: number of samples = 28
Description: Collection of dissolved inorganic carbon and total alkalinity samples from non-toxic supply for laboratory analysis
AlkalinityQuantity: number of samples = 195
Description: Collection of dissolved inorganic carbon and total alkalinity samples for laboratory analysis (from both CTDs)
Trace elementsQuantity: number of samples = 18
Description: Samples for analysis of iron(II) concentration (T CTDs only).
Trace elementsQuantity: number of samples = 171
Description: Samples for analysis of particulate trace metals (T CTDs only).
Trace elementsQuantity: number of samples = 527
Description: Samples for analysis of dissolvable and dissolved trace metals (Al, Mn, Ag, Cd, Zn, Cu) (T CTDs only).
Trace elementsQuantity: number of samples = 1084
Description: Samples for analysis of total dissolvable, dissolved and soluble iron (T CTDs only).
Trace elementsQuantity: number of samples = 87
Description: Samples for analysis of iron binding ligands (T CTDs only).
RadioactivityQuantity: number of samples = 148
Description: Samples for analysis of radium isotopes (224Ra, 223Ra) and parent isotopes (227Ac, 228Th). A subset (40) will also be analysed for 228Ra and 226Ra (SS CTDs only).
IsotopesQuantity: number of samples = 358
Description: Collection of dissolved organic matter (DOC, TDN, TDP, DFAA, THAA, CDOM, isotopic N) samples for laboratory analysis (from both CTDs)
IsotopesQuantity: number of samples = 195
Description: Samples for analysis of triple O2 isotopes (both CTDs)
IsotopesQuantity: number of samples = 62
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids, isotopic PN) (SS CTD only)
Other chemical oceanographic measurementsQuantity: number of samples = 28
Description: Collection of dissolved inorganic carbon and total alkalinity samples from non-toxic supply for laboratory analysis
Other chemical oceanographic measurementsQuantity: number of samples = 195
Description: Collection of dissolved inorganic carbon and total alkalinity samples for laboratory analysis (from both CTDs)
Biology and fisheries 
Primary productivityQuantity: number of samples = 54
Description: Collection and analysis of photosynthetic parameters for distinct size fractions (0.2-2 micrometres, 2-20 micrometres and >20 micrometres) (SS CTD only)
Primary productivityQuantity: number of samples = 54
Description: Collection, incubation and measurements of primary production, carbon fixation (and DOC production), phosphate uptake (and DOP production), calcite production and size-fractionated (0.2-2 micrometres, 2-20 micrometres and >20 micrometres) primary production (SS CTD only)
Primary productivityQuantity: activity duration in days = 29
Description: Underway O2/Ar measurements from non-toxic underway supply
Primary productivityQuantity: number of samples = 54
Description: Collection and analysis of sea water samples for community and bacterial respiration rates (SS CTD only)
Primary productivityQuantity: number of samples = 156
Description: Discrete FRRf measurements from CTD niskin bottles (SS CTD only)
Primary productivityQuantity: activity duration in days = 28
Description: Underway FRRf measurements from non-toxic underway supply
Primary productivityQuantity: number of samples = 200
Description: Samples for analysis of oxygen / argon ratios (both CTDs)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 30
Description: Underway surface measurements from TSG, fluorometer, transmissometer
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 100
Description: CTD profiles [Stainless Steel (SS) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 40
Description: CTD profiles [Titanium (T) frame] (temperature, salinity, pressure, oxygen, beam transmission, fluorescence, PAR/irradiance, turbidity/light scatter)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 365
Description: Filtration of samples for laboratory analysis of total chlorophyll-a (from both CTDs)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 471
Description: Filtration of samples for laboratory analysis of size-fractionated (0.2-2 ?m, 2-20 micrometres, >20 micrometres) chlorophyll-a (from SS CTD only)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 62
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids, isotopic PN) (SS CTD only)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 15
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids) (SAPS)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 156
Description: Filtration of samples for laboratory analysis of particulate material (pigments and light absorption) (SS CTD only)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 800
Description: Size-fractionated (0.2-2 micrometres, 2-20 micrometres and >20 micrometres) measurements of chlorophyll from zooplankton experiments.
Particulate organic matter (inc POC, PON)Quantity: number of samples = 171
Description: Samples for analysis of particulate trace metals (T CTDs only).
Particulate organic matter (inc POC, PON)Quantity: number of samples = 62
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids, isotopic PN) (SS CTD only)
Particulate organic matter (inc POC, PON)Quantity: number of samples = 102
Description: Filtration of samples for analysis of particulate material (BSi) (SS CTD only)
Particulate organic matter (inc POC, PON)Quantity: number of samples = 15
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids) (SAPS)
Particulate organic matter (inc POC, PON)Quantity: number of samples = 264
Description: Samples from vertical net hauls (63 micrometres and 200 micrometres) for elemental composition (night and day)
Particulate organic matter (inc POC, PON)Quantity: number of samples = 20
Description: Samples for analysis of Transparent Exopolymer Particles (TEP) (SS CTDs only)
Particulate organic matter (inc POC, PON)Quantity: number of samples = 8
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids) (Marine snow catchers)
Dissolved organic matter (inc DOC)Quantity: number of samples = 358
Description: Collection of dissolved organic matter (DOC, TDN, TDP, DFAA, THAA, CDOM, isotopic N) samples for laboratory analysis (from both CTDs)
Dissolved organic matter (inc DOC)Quantity: number of samples = 20
Description: Samples for analysis of Transparent Exopolymer Particles (TEP) (SS CTDs only)
Dissolved organic matter (inc DOC)Quantity: number of samples = 1176
Description: Samples from DOM (Dissolved organic matter) remineralisation experiments
Biochemical measurements (eg lipids, amino acids)Quantity: number of samples = 15
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids) (SAPS)
Biochemical measurements (eg lipids, amino acids)Quantity: number of samples = 62
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids, pigments, amino acids, isotopic PN) (SS CTD only)
Biochemical measurements (eg lipids, amino acids)Quantity: number of samples = 264
Description: Samples from vertical net hauls (63 micrometres and 200 micrometres) for elemental composition (night and day)
Biochemical measurements (eg lipids, amino acids)Quantity: number of samples = 8
Description: Filtration of samples for laboratory analysis of suspended particulate material (POC, PON, POP, lipids) (Marine snow catchers)
PhytoplanktonQuantity: number of samples = 500
Description: Collection and analysis of sea water samples for determination of abundance and composition of small plankton by flow cytometry (both CTDs)
PhytoplanktonQuantity: number of samples = 1023
Description: Samples for analysis of phytoplankton community structure by flow cytometry (from both CTDs).
PhytoplanktonQuantity: number of samples = 73
Description: Collection of sea water samples for enumeration of large plankton (SS CTD only)
PhytoplanktonQuantity: number of samples = 67
Description: Preserved water samples (acidic Lugols solution) for analysis of phytoplankton community structure by light microscopy (SS CTDs only).
PhytoplanktonQuantity: number of samples = 226
Description: Preserved water samples (acidic Lugols solution) for analysis of phytoplankton community structure by light microscopy from zooplankton experiments.
PhytoplanktonQuantity: number of samples = 208
Description: Samples for analysis of phytoplankton community structure by flow cytometry from zooplankton experiments.
PhytoplanktonQuantity: number of samples = 52
Description: Filtration of samples for analysis of coccolithophore abundance (SS CTD only)
ZooplanktonQuantity: number of samples = 380
Description: Samples for dissolved nutrient analysis from zooplankton experiments.
ZooplanktonQuantity: number of samples = 264
Description: Samples from vertical net hauls (63 micrometres and 200 micrometres) for elemental composition (night and day)
ZooplanktonQuantity: number of samples = 318
Description: Samples from vertical net hauls (63 micrometres and 200 micrometres) for zooplankton biomass and composition (night and day)
ZooplanktonQuantity: number of samples = 73
Description: Collection of sea water samples for enumeration of large plankton (SS CTD only)
ZooplanktonQuantity: number of samples = 67
Description: Preserved water samples (acidic Lugols solution) for analysis of phytoplankton community structure by light microscopy (SS CTDs only).
ZooplanktonQuantity: number of samples = 226
Description: Preserved water samples (acidic Lugols solution) for analysis of phytoplankton community structure by light microscopy from zooplankton experiments.
Pelagic bacteria/micro-organismsQuantity: number of samples = 462
Description: Samples for determination of bacterial production (Marine snow catcher)
Pelagic bacteria/micro-organismsQuantity: number of samples = 500
Description: Collection and analysis of sea water samples for determination of abundance and composition of small plankton by flow cytometry (both CTDs)
Pelagic bacteria/micro-organismsQuantity: number of samples = 1023
Description: Samples for analysis of phytoplankton community structure by flow cytometry (from both CTDs).
Pelagic bacteria/micro-organismsQuantity: number of samples = 462
Description: Samples for determination of bacterial production (SS CTDs only)
Pelagic bacteria/micro-organismsQuantity: number of samples = 3
Description: Collection and analysis of sea water samples for carbon remineralization rates of different sinking fractions (Marine snow catcher)
Pelagic bacteria/micro-organismsQuantity: number of samples = 1176
Description: Samples from DOM (Dissolved organic matter) remineralisation experiments
Pelagic bacteria/micro-organismsQuantity: number of samples = 54
Description: Collection and analysis of sea water samples for community and bacterial respiration rates (SS CTD only)
Pelagic bacteria/micro-organismsQuantity: number of samples = 208
Description: Samples for analysis of phytoplankton community structure by flow cytometry from zooplankton experiments.
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 30
Description: Underway met package (PAR, TIR, wind spd/dir, air temp, humidity, air pressure)
Moorings, landers, buoys 
Physical oceanography 
Subsurface temperature measurements49° 23' 48" N  8° 35' 35" W — T-chain: 23 temperature and conductivity loggers (3 x SBE 16+, 4 x SBE 37, 16 x mini temperature loggers). Deployed 11/04/2015.
Subsurface temperature measurements49° 23' 49" N  8° 36' 19" W — T-chain: 23 temperature and conductivity loggers (3 x SBE 16+, 4 x SBE 37, 16 x mini temperature loggers). Recovered 04/04/2015.
Transparency (eg transmissometer)48° 36' 52" N  9° 24' 56" W — Slocum glider SN_423 ('OMG2'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Transparency (eg transmissometer)49° 29' 15" N  8° 33' 38" W — Slocum glider SN_400 ('Drake'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Transparency (eg transmissometer)49° 23' 19" N  8° 33' 30" W — Slocum glider SN_424 ('OMG3'). Deployed 04/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Transparency (eg transmissometer)49° 34' 17" N  9° 30' 36" W — Slocum glider SN_423 ('OMG2'). Deployed 17/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Transparency (eg transmissometer)48° 32' 19" N  9° 24' 52" W — Seaglider SN_533 ('Canopus'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Transparency (eg transmissometer)48° 26' 19" N  9° 51' 30" W — Seaglider SN_533 ('Canopus'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Transparency (eg transmissometer)48° 26' 15" N  9° 51' 45" W — Slocum glider SN_437 ('Boondoggle'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Transparency (eg transmissometer)49° 23' 35" N  8° 36' 1" W — Slocum glider SN_400 ('Drake'). Deployed 11/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Transparency (eg transmissometer)49° 23' 37" N  8° 33' 45" W — Slocum glider SN_400 ('Drake'). Recovered 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Transparency (eg transmissometer)49° 23' 25" N  8° 33' 35" W — Slocum glider SN_397 ('Nelson'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Transparency (eg transmissometer)49° 24' 39" N  8° 32' 58" W — Seaglider SN_534 ('Denebola'). Recovered 25/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Transparency (eg transmissometer)49° 23' 30" N  8° 33' 16" W — Seaglider SN_534 ('Denebola'). Deployed 04/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Transparency (eg transmissometer)49° 24' 43" N  8° 32' 51" W — Slocum glider SN_424 ('OMG3'). Recovered 25/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Optics (eg underwater light levels)48° 26' 15" N  9° 51' 45" W — Slocum glider SN_437 ('Boondoggle'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Optics (eg underwater light levels)48° 26' 19" N  9° 51' 30" W — Seaglider SN_533 ('Canopus'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Optics (eg underwater light levels)48° 53' 20" N  9° 7' 5" W — Slocum glider SN_419 ('49'R'). Recovered 03/04/2015.
Optics (eg underwater light levels)48° 32' 19" N  9° 24' 52" W — Seaglider SN_533 ('Canopus'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Current profiler (eg ADCP)49° 23' 57" N  8° 36' 8" W — Inline ADCP. 3 x 600 Khz ADCPs. Recovered 04/04/2015.
Current profiler (eg ADCP)48° 23' 51" N  8° 36' 1" W — ADCP Bedframe with SBE 16+ (temperature, pressure, and conductivity), 150 kHz ADCP (upward looking), 600 kHz ADCP (upward looking), Deployed 11/04/2015.
Current profiler (eg ADCP)49° 24' 1" N  8° 35' 54" W — Inline ADCP. 3 x 600 kHz ADCPS. Deployed 11/04/2015.
Surface drifters/drifting buoys49° 23' 48" N  8° 36' 35" W — Recovery of Guard Buoy, 05/04/2015.
Other physical oceanographic measurements49° 24' 39" N  8° 32' 58" W — Seaglider SN_534 ('Denebola'). Recovered 25/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Other physical oceanographic measurements49° 23' 30" N  8° 33' 16" W — Seaglider SN_534 ('Denebola'). Deployed 04/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Other physical oceanographic measurements49° 34' 17" N  9° 30' 36" W — Slocum glider SN_423 ('OMG2'). Deployed 17/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Other physical oceanographic measurements48° 36' 52" N  9° 24' 56" W — Slocum glider SN_423 ('OMG2'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Other physical oceanographic measurements49° 24' 43" N  8° 32' 51" W — Slocum glider SN_424 ('OMG3'). Recovered 25/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Other physical oceanographic measurements48° 23' 51" N  8° 36' 1" W — ADCP Bedframe with SBE 16+ (temperature, pressure, and conductivity), 150 kHz ADCP (upward looking), 600 kHz ADCP (upward looking), Deployed 11/04/2015.
Other physical oceanographic measurements49° 24' 16" N  8° 36' 2" W — Wirewalker: CTD (temperature, pressure, conductivity) and ECO-puck package (chlorophyll and CDOM fluorescence). Deployed 05/05/2015, recovered 11/04/2015.
Other physical oceanographic measurements48° 53' 20" N  9° 7' 5" W — Slocum glider SN_419 ('49'R'). Recovered 03/04/2015.
Other physical oceanographic measurements49° 23' 19" N  8° 33' 30" W — Slocum glider SN_424 ('OMG3'). Deployed 04/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Other physical oceanographic measurements49° 24' 16" N  8° 36' 2" W — Wirewalker: CTD (temperature, pressure, conductivity) and ECO-puck package (chlorophyll and CDOM fluorescence). Deployed 15/04/2015, recovered 25/04/2015.
Chemical oceanography 
Oxygen49° 23' 35" N  8° 36' 1" W — Slocum glider SN_400 ('Drake'). Deployed 11/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Oxygen49° 23' 25" N  8° 33' 35" W — Slocum glider SN_397 ('Nelson'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Oxygen49° 23' 37" N  8° 33' 45" W — Slocum glider SN_400 ('Drake'). Recovered 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Oxygen49° 24' 43" N  8° 32' 51" W — Slocum glider SN_424 ('OMG3'). Recovered 25/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Oxygen49° 23' 30" N  8° 33' 16" W — Seaglider SN_534 ('Denebola'). Deployed 04/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Oxygen48° 32' 19" N  9° 24' 52" W — Seaglider SN_533 ('Canopus'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Oxygen49° 23' 19" N  8° 33' 30" W — Slocum glider SN_424 ('OMG3'). Deployed 04/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Oxygen48° 26' 19" N  9° 51' 30" W — Seaglider SN_533 ('Canopus'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Oxygen49° 34' 17" N  9° 30' 36" W — Slocum glider SN_423 ('OMG2'). Deployed 17/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Oxygen48° 36' 52" N  9° 24' 56" W — Slocum glider SN_423 ('OMG2'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Oxygen48° 26' 15" N  9° 51' 45" W — Slocum glider SN_437 ('Boondoggle'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Oxygen49° 24' 39" N  8° 32' 58" W — Seaglider SN_534 ('Denebola'). Recovered 25/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Oxygen49° 29' 15" N  8° 33' 38" W — Slocum glider SN_400 ('Drake'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Contamination 
Suspended matter49° 23' 37" N  8° 33' 45" W — Slocum glider SN_400 ('Drake'). Recovered 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Suspended matter49° 29' 15" N  8° 33' 38" W — Slocum glider SN_400 ('Drake'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Suspended matter49° 23' 30" N  8° 33' 16" W — Seaglider SN_534 ('Denebola'). Deployed 04/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Suspended matter49° 24' 39" N  8° 32' 58" W — Seaglider SN_534 ('Denebola'). Recovered 25/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Suspended matter48° 26' 19" N  9° 51' 30" W — Seaglider SN_533 ('Canopus'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Suspended matter48° 36' 52" N  9° 24' 56" W — Slocum glider SN_423 ('OMG2'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Suspended matter49° 24' 43" N  8° 32' 51" W — Slocum glider SN_424 ('OMG3'). Recovered 25/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Suspended matter49° 23' 19" N  8° 33' 30" W — Slocum glider SN_424 ('OMG3'). Deployed 04/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Suspended matter48° 26' 15" N  9° 51' 45" W — Slocum glider SN_437 ('Boondoggle'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Suspended matter49° 23' 25" N  8° 33' 35" W — Slocum glider SN_397 ('Nelson'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Suspended matter48° 53' 20" N  9° 7' 5" W — Slocum glider SN_419 ('49'R'). Recovered 03/04/2015.
Suspended matter48° 32' 19" N  9° 24' 52" W — Seaglider SN_533 ('Canopus'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Suspended matter49° 23' 35" N  8° 36' 1" W — Slocum glider SN_400 ('Drake'). Deployed 11/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Suspended matter49° 34' 17" N  9° 30' 36" W — Slocum glider SN_423 ('OMG2'). Deployed 17/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Other dissolved substances48° 53' 20" N  9° 7' 5" W — Slocum glider SN_419 ('49'R'). Recovered 03/04/2015.
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)48° 36' 52" N  9° 24' 56" W — Slocum glider SN_423 ('OMG2'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 24' 16" N  8° 36' 2" W — Wirewalker: CTD (temperature, pressure, conductivity) and ECO-puck package (chlorophyll and CDOM fluorescence). Deployed 05/05/2015, recovered 11/04/2015.
Phytoplankton pigs (eg chlorophyll, fluorescence)48° 53' 20" N  9° 7' 5" W — Slocum glider SN_419 ('49'R'). Recovered 03/04/2015.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 24' 43" N  8° 32' 51" W — Slocum glider SN_424 ('OMG3'). Recovered 25/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 23' 30" N  8° 33' 16" W — Seaglider SN_534 ('Denebola'). Deployed 04/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 24' 39" N  8° 32' 58" W — Seaglider SN_534 ('Denebola'). Recovered 25/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 23' 25" N  8° 33' 35" W — Slocum glider SN_397 ('Nelson'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 23' 37" N  8° 33' 45" W — Slocum glider SN_400 ('Drake'). Recovered 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 23' 35" N  8° 36' 1" W — Slocum glider SN_400 ('Drake'). Deployed 11/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Phytoplankton pigs (eg chlorophyll, fluorescence)48° 26' 15" N  9° 51' 45" W — Slocum glider SN_437 ('Boondoggle'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Phytoplankton pigs (eg chlorophyll, fluorescence)48° 26' 19" N  9° 51' 30" W — Seaglider SN_533 ('Canopus'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Phytoplankton pigs (eg chlorophyll, fluorescence)48° 32' 19" N  9° 24' 52" W — Seaglider SN_533 ('Canopus'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 34' 17" N  9° 30' 36" W — Slocum glider SN_423 ('OMG2'). Deployed 17/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 24' 16" N  8° 36' 2" W — Wirewalker: CTD (temperature, pressure, conductivity) and ECO-puck package (chlorophyll and CDOM fluorescence). Deployed 15/04/2015, recovered 25/04/2015.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 23' 19" N  8° 33' 30" W — Slocum glider SN_424 ('OMG3'). Deployed 04/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Phytoplankton pigs (eg chlorophyll, fluorescence)49° 29' 15" N  8° 33' 38" W — Slocum glider SN_400 ('Drake'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Dissolved organic matter (inc DOC)48° 36' 52" N  9° 24' 56" W — Slocum glider SN_423 ('OMG2'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Dissolved organic matter (inc DOC)49° 24' 43" N  8° 32' 51" W — Slocum glider SN_424 ('OMG3'). Recovered 25/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Dissolved organic matter (inc DOC)49° 23' 30" N  8° 33' 16" W — Seaglider SN_534 ('Denebola'). Deployed 04/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Dissolved organic matter (inc DOC)49° 24' 39" N  8° 32' 58" W — Seaglider SN_534 ('Denebola'). Recovered 25/04/2015. ECO Puck (Chl, CDOM, Trans), CTD, Nitrate sensor 'Lab-on-Chip'.
Dissolved organic matter (inc DOC)49° 23' 25" N  8° 33' 35" W — Slocum glider SN_397 ('Nelson'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Dissolved organic matter (inc DOC)49° 23' 37" N  8° 33' 45" W — Slocum glider SN_400 ('Drake'). Recovered 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Dissolved organic matter (inc DOC)49° 29' 15" N  8° 33' 38" W — Slocum glider SN_400 ('Drake'). Deployed 05/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Dissolved organic matter (inc DOC)48° 26' 15" N  9° 51' 45" W — Slocum glider SN_437 ('Boondoggle'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Dissolved organic matter (inc DOC)48° 26' 19" N  9° 51' 30" W — Seaglider SN_533 ('Canopus'). Deployed 09/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Dissolved organic matter (inc DOC)48° 32' 19" N  9° 24' 52" W — Seaglider SN_533 ('Canopus'). Recovered 24/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, PAR.
Dissolved organic matter (inc DOC)49° 34' 17" N  9° 30' 36" W — Slocum glider SN_423 ('OMG2'). Deployed 17/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Dissolved organic matter (inc DOC)49° 23' 19" N  8° 33' 30" W — Slocum glider SN_424 ('OMG3'). Deployed 04/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD, MicroRider.
Dissolved organic matter (inc DOC)49° 23' 35" N  8° 36' 1" W — Slocum glider SN_400 ('Drake'). Deployed 11/04/2015. Optode, ECO Puck (Chl, CDOM, Trans), CTD.
Data held at BODC Get data
Discrete samples 
95  CTD frame plus rosette samplerTotal dissolved inorganic carbon (TCO2) concentration in the water column
Nitrite concentration parameters in the water column
Salinity of the water column
Phosphate concentration parameters in the water column
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Nitrate concentration parameters in the water column
Alkalinity, acidity and pH of the water column
8  Marine snow catcher
110  Sample taken from ship's non-toxic supplyTotal dissolved inorganic carbon (TCO2) concentration in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Nitrate concentration parameters in the water column
Alkalinity, acidity and pH of the water column
46  Total dissolved inorganic carbon (TCO2) concentration in the water column
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Nitrate concentration parameters in the water column
Alkalinity, acidity and pH of the water column