Cruise inventory

RRS Discovery D371 (AMT21)

Cruise summary report

Cruise inventory

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD371 (AMT21)
Cruise period2011-09-29 — 2011-11-14
StatusCompleted
Port of departureAvonmouth, United Kingdom
Port of returnPunta Arenas, Chile
PurposeResearch
ObjectivesAMT21 (D371) is the fourth cruise of the third phase of the Atlantic Meridional Transect (AMT) programme. The programme is hosted by Plymouth Marine Laboratory in collaboration with the National Oceanography Centre, Southampton and provides an exceptional opportunity for nationally and internationally driven collaborative research and provides a platform for excellent multi-disciplinary oceanographic research. As an in situ observation system, AMT informs on changes in biodiversity and function of the Atlantic ecosystem during this period of rapid change to our climate and biosphere.

The aims of the AMT programme are to quantify the nature and causes of ecological and biogeochemical variability in the planktonic ecosystems of the Atlantic Ocean, and to assess the effects of this variability on biological carbon cycling and air-sea exchange of radiatively active gases and aerosols. Between 1995 and 2005 marine and atmospheric data were collected twice a year along a 13,500 km transect in the Atlantic Ocean. The cruise track enabled biogeochemical measurements to be made within the poorly studied North and South Atlantic oligotrophic gyres as well as within equatorial and coastal upwelling regions. The range of ecosystems sampled has facilitated the calibration and validation of newly developed techniques, provided a testbed for comparative ecology and enabled the development of atmospheric and oceanographic models. The unique AMT dataset continues to be deposited and made available to the wider community through the British Oceanographic Data Centre. The programme has provided a platform for national and international collaboration (~80 scientists from 11 countries), and has contributed to the training of > 70 PhD students and staff. AMT has produced >190 peer reviewed publications.
Chief scientistGlen Tarran (Plymouth Marine Laboratory)
ProjectAtlantic Meridional Transect (AMT)
Coordinating bodyNatural Environment Research Council (NERC)
Cruise reportRRS Discovery D371 (AMT21) cruise report d371.pdf — access key 'C' (3.10 MB) 
Ocean/sea areas 
GeneralAtlantic Ocean
SpecificAtlantic Ocean from UK to Chile
Track chartsRRS Discovery D371 (AMT21) cruise track — d371trk.pdf (0.16 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 41
Description: Operated an along-track flow-through system from ship’s non-toxic seawater supply to characterize bio-optical properties of the water (backscattering, fluorescence) (~24 h/day). Also operated Micro-SAS system on the ship’s bow and main mast platform to measure upwelling radiance, downwelling radiance and total downwelling irradiance (~10h/day).
Surface measurements underway (T,S)Quantity: activity duration in days = 40
Description: Along track measurement of sea surface parameters from the non-toxic supply and ship mounted meteorological sensors.
CTD stationsQuantity: number of stations = 74
Description: CTD profiles with oxygen sensor, fluorometer, transmissometer, PAR sensors and BB-RTD
Transparency (eg transmissometer)Quantity: number of profiles = 140
Description: In-water optics rig: i) Fast Repetition Rate Fluorometer (phytoplankton physiology); ii) Satlantic UV sensor (downwelling spectral UV light at 305, 320, 340 and 380 nm); iii) Wetlabs ac-9 (attenuation and absorption at 9 wavelengths: 412, 440, 488, 510, 532, 555, 650, 676, 715 nm); iv) SeaBird SBE19+ CTD (temperature and salinity with depth for correction of the ac9); v) ancillary PAR measurements (determination of light levels in water column); vi) Hobilabs hydroscat 6 (bb6: backscatter at 6 wavelengths: 442, 488, 550, 620, 671, 852)
Transparency (eg transmissometer)Quantity: activity duration in days = 40
Description: Along track measurement of sea surface parameters from the non-toxic supply and ship mounted meteorological sensors.
Optics (eg underwater light levels)Quantity: number of profiles = 140
Description: In-water optics rig: i) Fast Repetition Rate Fluorometer (phytoplankton physiology); ii) Satlantic UV sensor (downwelling spectral UV light at 305, 320, 340 and 380 nm); iii) Wetlabs ac-9 (attenuation and absorption at 9 wavelengths: 412, 440, 488, 510, 532, 555, 650, 676, 715 nm); iv) SeaBird SBE19+ CTD (temperature and salinity with depth for correction of the ac9); v) ancillary PAR measurements (determination of light levels in water column); vi) Hobilabs hydroscat 6 (bb6: backscatter at 6 wavelengths: 442, 488, 550, 620, 671, 852)
Optics (eg underwater light levels)Quantity: activity duration in days = 41
Description: Deck mounted (over the CTD winch cab) Satlantic HyperSAS sensor: Hyperspectral (300 – 900 nm) water-leaving reflectance measurements at 6 minute intervals through daylight hours; measurements integrated over 30 s. These include water, sky and sun radiance measuring sensors (3).
Optics (eg underwater light levels)Quantity: activity duration in days = 41
Description: Operated an along-track flow-through system from ship’s non-toxic seawater supply to characterize bio-optical properties of the water (backscattering, fluorescence) (~24 h/day). Also operated Micro-SAS system on the ship’s bow and main mast platform to measure upwelling radiance, downwelling radiance and total downwelling irradiance (~10h/day).
Current profiler (eg ADCP)Quantity: activity duration in days = 40
Description: Along track measurement of sea surface parameters from the non-toxic supply and ship mounted meteorological sensors.
Chemical oceanography 
OxygenQuantity: number of stations = 38
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. 6 depths sampled per station in the euphotic zone for production/respiration incubations (dissolved oxygen and in vivo ETS respiration).
OxygenQuantity: number of stations = 42
Description: 42 stations sampled for calibration of the CTD system used during the cruise. A range of depths and concentrations taken from the Niskin bottles.
Carbon dioxideQuantity: activity duration in days = 42
Description: Atmospheric (marine air) and surface ocean (underway) pCO2 measurement using Dartcom-PML’s “Live pCO2” autonomous instrument with LiCOR infrared gas analyzer
PhosphateQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. Discrete samples for micro-molar nutrient analysis. All 24 niskin bottles sampled per station.
PhosphateQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
Total - PQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
NitrateQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. Discrete samples for micro-molar nutrient analysis. All 24 niskin bottles sampled per station.
NitrateQuantity: number of stations = 34
Description: Nitrate Isotope samples collected from DCM and next lowest depth for each predawn CTD.
NitrateQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
NitriteQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. Discrete samples for micro-molar nutrient analysis. All 24 niskin bottles sampled per station.
NitriteQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
Total - NQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
AmmoniaQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
SilicateQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. Discrete samples for micro-molar nutrient analysis. All 24 niskin bottles sampled per station.
SilicateQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
AlkalinityQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. 10-13 depths sampled per station for pH. 3 depths sampled for TA.
pHQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. 10-13 depths sampled per station for pH. 3 depths sampled for TA.
Trace elementsQuantity: number of samples = 65
Description: Samples collected from the trace metal clean TowFish for DFe and nano-nutrients including DON, DIN, DIP, DOP, Silicate, Ammonia, Nitrate + Nitrite.
RadioactivityQuantity: number of stations = 48
Description: Glucose uptake using radiotracers and 13 stations sampled for RNA analysis.
IsotopesQuantity: number of stations = 34
Description: Community Nitrogen fixation rate measurements using 15N2 gas injection method. 4 depths per predawn CTD.
IsotopesQuantity: number of stations = 34
Description: Nitrate Isotope samples collected from DCM and next lowest depth for each predawn CTD.
Other chemical oceanographic measurementsQuantity: number of stations = 74
Description: Vertical profiles from CTD niskin bottles at 74 stations. Discrete samples obtained for analysis of PIC, POC, Biogenic silica, and coccolith enumeration.
Other chemical oceanographic measurementsQuantity: number of stations = 89
Description: 89 sites of surface samples taken from the ship’s non-toxic seawater supply. Discrete samples obtained for analysis of PIC, POC, Biogenic silica, and coccolith enumeration.
Biology and fisheries 
Primary productivityQuantity: number of stations = 34
Description: Photosynthesis-Irradiance experiments and phytoplankton absorption measurements at two depths in the water column from solar noon CTD casts
Primary productivityQuantity: number of stations = 36
Description: Vertical profile (6 depths) for size-fractionated phytoplankton production from pre-dawn CTD casts
Primary productivityQuantity: number of hauls = 24
Description: Trichodesmium samples collected for targeted protein MS (LC MS/MS), intra-cellular metal concentration (ICP-MS), CHN and NFix rates (EA-IRMS), POP, Lipid ratios (LC-MS), Chlorophyll and photosynthetic efficiency.
Primary productivityQuantity: number of stations = 38
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. 6 depths sampled per station in the euphotic zone for production/respiration incubations (dissolved oxygen and in vivo ETS respiration).
Primary productivityQuantity: number of stations = 62
Description: Measurements of CDOM absorption spectra, CDOM fluorescence Excitation Emission Matrix spectra and DOC concentration from CTD Niskin bottles at CTD stations. 6 depths analysed per station.
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 34
Description: Photosynthesis-Irradiance experiments and phytoplankton absorption measurements at two depths in the water column from solar noon CTD casts
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 140
Description: In-water optics rig: i) Fast Repetition Rate Fluorometer (phytoplankton physiology); ii) Satlantic UV sensor (downwelling spectral UV light at 305, 320, 340 and 380 nm); iii) Wetlabs ac-9 (attenuation and absorption at 9 wavelengths: 412, 440, 488, 510, 532, 555, 650, 676, 715 nm); iv) SeaBird SBE19+ CTD (temperature and salinity with depth for correction of the ac9); v) ancillary PAR measurements (determination of light levels in water column); vi) Hobilabs hydroscat 6 (bb6: backscatter at 6 wavelengths: 442, 488, 550, 620, 671, 852)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. Discrete samples for abundance of phytoplankton pigments by High Performance Liquid Chromatography (HPLC). Average 7 depths sampled per station. Samples will be analysed after the cruise.
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 41
Description: Operated an along-track flow-through system from ship’s non-toxic seawater supply to characterize bio-optical properties of the water (backscattering, fluorescence) (~24 h/day). Also operated Micro-SAS system on the ship’s bow and main mast platform to measure upwelling radiance, downwelling radiance and total downwelling irradiance (~10h/day).
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of hauls = 24
Description: Trichodesmium samples collected for targeted protein MS (LC MS/MS), intra-cellular metal concentration (ICP-MS), CHN and NFix rates (EA-IRMS), POP, Lipid ratios (LC-MS), Chlorophyll and photosynthetic efficiency.
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 38
Description: Vertical profile from predawn CTD Niskin bottles at stations along the cruise track. 1 depth sampled per station in the euphotic zone (surface or DCM) for size-structure calibration of microbial plankton community (enzymatic fractionated respiration, fractionated chlorophyll-a, bacterial cell counts and identification analysis)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 62
Description: Measurements of CDOM absorption spectra, CDOM fluorescence Excitation Emission Matrix spectra and DOC concentration from CTD Niskin bottles at CTD stations. 6 depths analysed per station.
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 180
Description: Fluorometric determination of surface chlorophyll a to calibrate against TSG fluorometer
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 74
Description: Fluorometric determination of chlorophyll a vertical profiles to calibrate against CTD fluorometer. 9 samples per station.
Particulate organic matter (inc POC, PON)Quantity: number of stations = 74
Description: Vertical profiles from CTD niskin bottles at 74 stations. Discrete samples obtained for analysis of PIC, POC, Biogenic silica, and coccolith enumeration.
Particulate organic matter (inc POC, PON)Quantity: number of stations = 89
Description: 89 sites of surface samples taken from the ship’s non-toxic seawater supply. Discrete samples obtained for analysis of PIC, POC, Biogenic silica, and coccolith enumeration.
Particulate organic matter (inc POC, PON)Quantity: number of stations = 34
Description: Community Nitrogen fixation rate measurements using 15N2 gas injection method. 4 depths per predawn CTD.
Particulate organic matter (inc POC, PON)Quantity: number of hauls = 24
Description: Trichodesmium samples collected for targeted protein MS (LC MS/MS), intra-cellular metal concentration (ICP-MS), CHN and NFix rates (EA-IRMS), POP, Lipid ratios (LC-MS), Chlorophyll and photosynthetic efficiency.
Particulate organic matter (inc POC, PON)Quantity: number of samples = 30
Description: Underway samples collected from ships non-toxic supply including PON, POP, bulk community DNA samples.
Biochemical measurements (eg lipids, amino acids)Quantity: number of stations = 19
Description: 19 noon stations from 8.10.11 to 21.8.11, surface seawater filtered through sterivex for nitrogen fixation gene analysis
Biochemical measurements (eg lipids, amino acids)Quantity: number of hauls = 24
Description: Trichodesmium samples collected for targeted protein MS (LC MS/MS), intra-cellular metal concentration (ICP-MS), CHN and NFix rates (EA-IRMS), POP, Lipid ratios (LC-MS), Chlorophyll and photosynthetic efficiency.
Biochemical measurements (eg lipids, amino acids)Quantity: number of samples = 30
Description: Underway samples collected from ships non-toxic supply including PON, POP, bulk community DNA samples.
Biochemical measurements (eg lipids, amino acids)Quantity: number of stations = 48
Description: Glucose uptake using radiotracers and 13 stations sampled for RNA analysis.
PhytoplanktonQuantity: number of stations = 34
Description: Photosynthesis-Irradiance experiments and phytoplankton absorption measurements at two depths in the water column from solar noon CTD casts
PhytoplanktonQuantity: number of stations = 74
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. Discrete samples for abundance of phytoplankton smaller than 20 micrometres analysed by flow cytometry. Average 14 depths sampled per station.
PhytoplanktonQuantity: number of stations = 74
Description: Vertical profiles from CTD niskin bottles at 74 stations. Discrete samples obtained for analysis of PIC, POC, Biogenic silica, and coccolith enumeration.
PhytoplanktonQuantity: number of stations = 89
Description: 89 sites of surface samples taken from the ship’s non-toxic seawater supply. Discrete samples obtained for analysis of PIC, POC, Biogenic silica, and coccolith enumeration.
PhytoplanktonQuantity: number of hauls = 31
Description: Identification of attached living bacteria
PhytoplanktonQuantity: number of stations = 34
Description: Community Nitrogen fixation rate measurements using 15N2 gas injection method. 4 depths per predawn CTD.
PhytoplanktonQuantity: number of stations = 62
Description: Measurements of CDOM absorption spectra, CDOM fluorescence Excitation Emission Matrix spectra and DOC concentration from CTD Niskin bottles at CTD stations. 6 depths analysed per station.
ZooplanktonQuantity: number of hauls = 35
Description: Double (Bongo) WP2 Net casts 0-180m integrated. 1 net through OPC to waste; 1 net 4% buffered formalin for PML analysis.
ZooplanktonQuantity: activity duration in days = 41
Description: Near-continuous (except for station stops) OPC size distributed biomass from surface zooplankton (non-toxic supply through OPC).
ZooplanktonQuantity: number of hauls = 24
Description: Trichodesmium samples collected for targeted protein MS (LC MS/MS), intra-cellular metal concentration (ICP-MS), CHN and NFix rates (EA-IRMS), POP, Lipid ratios (LC-MS), Chlorophyll and photosynthetic efficiency.
Pelagic bacteria/micro-organismsQuantity: number of stations = 19
Description: 19 noon stations from 8.10.11 to 21.8.11, surface seawater filtered through sterivex for nitrogen fixation gene analysis
Pelagic bacteria/micro-organismsQuantity: activity duration in days = 39
Description: Enumeration of bacterial cells using FACSort flow cytometer
Pelagic bacteria/micro-organismsQuantity: number of stations = 30
Description: Productivity measurements of bacterial populations using radiotracers
Pelagic bacteria/micro-organismsQuantity: number of stations = 29
Description: Aminoacid uptake in dark versus light of Prochlorococcus using radiotracers
Pelagic bacteria/micro-organismsQuantity: number of stations = 53
Description: Diversity, distribution, identification and abundances of bacteria using Fluorescence in situ hybridization (FISH)
Pelagic bacteria/micro-organismsQuantity: number of hauls = 31
Description: Identification of attached living bacteria
Pelagic bacteria/micro-organismsQuantity: activity duration in days = 35
Description: Diversity, distribution, identification and abundances of bacteria using Fluorescence in situ hybridization (FISH)
Pelagic bacteria/micro-organismsQuantity: number of stations = 38
Description: Vertical profile from predawn CTD Niskin bottles at stations along the cruise track. 1 depth sampled per station in the euphotic zone (surface or DCM) for size-structure calibration of microbial plankton community (enzymatic fractionated respiration, fractionated chlorophyll-a, bacterial cell counts and identification analysis)
Pelagic bacteria/micro-organismsQuantity: number of stations = 74
Description: Enumeration of bacterial cells using FACSort flow cytometer
Other biological/fisheries measurementQuantity: number of stations = 38
Description: Vertical profiles from CTD Niskin bottles at stations along the cruise track. 6 depths sampled per station in the euphotic zone for production/respiration incubations (dissolved oxygen and in vivo ETS respiration).
Other biological/fisheries measurementQuantity: number of stations = 38
Description: Vertical profile from predawn CTD Niskin bottles at stations along the cruise track. 1 depth sampled per station in the euphotic zone (surface or DCM) for size-structure calibration of microbial plankton community (enzymatic fractionated respiration, fractionated chlorophyll-a, bacterial cell counts and identification analysis)
Other biological/fisheries measurementQuantity: number of stations = 48
Description: Glucose uptake using radiotracers and 13 stations sampled for RNA analysis.
Meteorology 
Incident radiationQuantity: activity duration in days = 41
Description: Deck mounted (over the CTD winch cab) Satlantic HyperSAS sensor: Hyperspectral (300 – 900 nm) water-leaving reflectance measurements at 6 minute intervals through daylight hours; measurements integrated over 30 s. These include water, sky and sun radiance measuring sensors (3).
Incident radiationQuantity: activity duration in days = 41
Description: Deck mounted Trios UV sensor: i) Hyperspectral (2.5 nm resolution: 200 – 500 nm wavelength) UV at 5 minute intervals through daylight hours; ii) decomposed hyperspectral into broadband UV-A and UV-B DATA NOT USABLE BECAUSE OF OIL INGRESS
Incident radiationQuantity: activity duration in days = 41
Description: Operated an along-track flow-through system from ship’s non-toxic seawater supply to characterize bio-optical properties of the water (backscattering, fluorescence) (~24 h/day). Also operated Micro-SAS system on the ship’s bow and main mast platform to measure upwelling radiance, downwelling radiance and total downwelling irradiance (~10h/day).
Routine standard measurementsQuantity: activity duration in days = 40
Description: Along track measurement of sea surface parameters from the non-toxic supply and ship mounted meteorological sensors.
Atmospheric chemistryQuantity: number of samples = 7
Description: Rainwater sampling for chemical composition
Atmospheric chemistryQuantity: number of samples = 33
Description: Dry aerosol sampling on filters for major ions and for physical speciation
Other meteorological measurementsQuantity: activity duration in days = 41
Description: Microtops sunphotometer measurements: i) Aerosol optical thickness at 340, 440, 675 and 870 nm; ii) water vapour content (cm)
Moorings, landers, buoys 
Physical oceanography 
Current meters18° 35' 56" S  25° 4' 31" W — Deployment. 2 x Sediment traps (s/n: ML11804-03 & ML11804-04) plus RCM8 current meters (s/n: 10529 & 3308) at 2700m and 2750m respectively. Instruments deployed for 14 months from 12 November 2011. Current meters set to 30-minute intervals.
Neutrally buoyant floats31° 27' 4" S  29° 42' 23" W — Teledyne Webb Research APEX profiling float (UK Met Office supplied.) Measures conductivity, temperature, depth to 2000 dbar using Sea-Bird pumped instrument system, transmits data via ARGOS at surface.
Neutrally buoyant floats35° 21' 37" S  35° 15' 55" W — Teledyne Webb Research APEX profiling float (UK Met Office supplied.) Measures conductivity, temperature, depth to 2000 dbar using Sea-Bird pumped instrument system, transmits data via ARGOS at surface.
Neutrally buoyant floats39° 2' 7" S  40° 44' 32" W — Teledyne Webb Research APEX profiling float (UK Met Office supplied.) Measures conductivity, temperature, depth to 2000 dbar using Sea-Bird pumped instrument system, transmits data via ARGOS at surface.
Neutrally buoyant floats41° 7' 27" S  43° 58' 57" W — Teledyne Webb Research APEX profiling float (UK Met Office supplied.) Measures conductivity, temperature, depth to 2000 dbar using Sea-Bird pumped instrument system, transmits data via ARGOS at surface.
Neutrally buoyant floats27° 9' 24" S  25° 0' 42" W — Teledyne Webb Research APEX profiling float (UK Met Office supplied.) Measures conductivity, temperature, depth to 2000 dbar using Sea-Bird pumped instrument system, transmits data via ARGOS at surface.
Neutrally buoyant floats36° 58' 42" S  37° 39' 7" W — Teledyne Webb Research APEX profiling float (UK Met Office supplied.) Measures conductivity, temperature, depth to 2000 dbar using Sea-Bird pumped instrument system, transmits data via ARGOS at surface.
Biology and fisheries 
Sediment traps18° 35' 56" S  25° 4' 31" W — Deployment. 2 x Sediment traps (s/n: ML11804-03 & ML11804-04) plus RCM8 current meters (s/n: 10529 & 3308) at 2700m and 2750m respectively. Instruments deployed for 14 months from 12 November 2011. Current meters set to 30-minute intervals.
Data held at BODC 
Series/Profiles 
73  CTD/STD cast
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Dissolved oxygen parameters in the water column
Temperature of the water column
Salinity of the water column
Reference numbers
Vertical spatial coordinates
Chlorophyll pigment concentrations in the water column
[Show series]
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Dissolved oxygen parameters in the water column
Temperature of the water column
Salinity of the water column
Reference numbers
Vertical spatial coordinates
Chlorophyll pigment concentrations in the water column
[Hide series]

BODC idDate/TimeLocationDoc.
10813672011-09-30 03:35  — 2011-09-30 04:05 50° 27' 25" N  7° 26' 37" W  View metadata report for BODC series reference number 1081367
10813792011-09-30 12:09  — 2011-09-30 12:52 49° 57' 6" N  9° 7' 59" W  View metadata report for BODC series reference number 1081379
10813802011-10-01 04:33  — 2011-10-01 05:33 49° 17' 13" N  12° 43' 14" W  View metadata report for BODC series reference number 1081380
10813922011-10-01 13:00  — 2011-10-01 14:05 49° 8' 43" N  14° 30' 59" W  View metadata report for BODC series reference number 1081392
10814112011-10-02 04:28  — 2011-10-02 05:28 48° 8' 12" N  17° 6' 28" W  View metadata report for BODC series reference number 1081411
10814232011-10-02 13:02  — 2011-10-02 14:15 47° 1' 32" N  17° 49' 58" W  View metadata report for BODC series reference number 1081423
10814352011-10-03 04:33  — 2011-10-03 05:34 44° 54' 6" N  19° 13' 4" W  View metadata report for BODC series reference number 1081435
10814472011-10-03 13:02  — 2011-10-03 13:48 43° 46' 57" N  19° 56' 30" W  View metadata report for BODC series reference number 1081447
10814592011-10-04 04:28  — 2011-10-04 05:20 41° 47' 42" N  21° 10' 43" W  View metadata report for BODC series reference number 1081459
10814602011-10-04 13:00  — 2011-10-04 13:50 40° 39' 58" N  21° 51' 20" W  View metadata report for BODC series reference number 1081460
10814722011-10-05 04:32  — 2011-10-05 05:25 38° 30' 41" N  23° 7' 54" W  View metadata report for BODC series reference number 1081472
10814842011-10-05 13:00  — 2011-10-05 13:42 37° 17' 59" N  23° 49' 31" W  View metadata report for BODC series reference number 1081484
10814962011-10-06 04:31  — 2011-10-06 05:31 35° 41' 48" N  25° 47' 42" W  View metadata report for BODC series reference number 1081496
10815032011-10-06 13:00  — 2011-10-06 14:10 34° 53' 45" N  26° 52' 23" W  View metadata report for BODC series reference number 1081503
10815152011-10-07 04:28  — 2011-10-07 05:21 33° 30' 31" N  28° 45' 4" W  View metadata report for BODC series reference number 1081515
10815272011-10-07 13:00  — 2011-10-07 13:58 32° 48' 49" N  29° 39' 2" W  View metadata report for BODC series reference number 1081527
10815392011-10-08 04:32  — 2011-10-08 05:29 31° 33' 3" N  31° 19' 30" W  View metadata report for BODC series reference number 1081539
10815402011-10-08 13:00  — 2011-10-08 13:55 30° 53' 2" N  32° 11' 25" W  View metadata report for BODC series reference number 1081540
10815522011-10-09 05:33  — 2011-10-09 06:10 29° 28' 55" N  33° 58' 20" W  View metadata report for BODC series reference number 1081552
10815642011-10-09 14:01  — 2011-10-09 14:53 28° 50' 23" N  34° 48' 29" W  View metadata report for BODC series reference number 1081564
10815762011-10-10 05:31  — 2011-10-10 06:36 27° 34' 42" N  36° 22' 50" W  View metadata report for BODC series reference number 1081576
10815882011-10-10 13:58  — 2011-10-10 14:53 26° 54' 59" N  37° 12' 46" W  View metadata report for BODC series reference number 1081588
10816072011-10-11 05:28  — 2011-10-11 06:23 25° 37' 36" N  38° 48' 12" W  View metadata report for BODC series reference number 1081607
10816192011-10-11 14:00  — 2011-10-11 15:08 24° 56' 39" N  39° 39' 12" W  View metadata report for BODC series reference number 1081619
10816202011-10-12 05:28  — 2011-10-12 06:22 23° 37' 35" N  41° 0' 39" W  View metadata report for BODC series reference number 1081620
10816322011-10-12 13:59  — 2011-10-12 14:53 22° 46' 11" N  40° 20' 48" W  View metadata report for BODC series reference number 1081632
10816442011-10-13 05:29  — 2011-10-13 06:39 21° 13' 7" N  39° 9' 10" W  View metadata report for BODC series reference number 1081644
10816562011-10-13 13:58  — 2011-10-13 15:59 20° 23' 37" N  38° 33' 1" W  View metadata report for BODC series reference number 1081656
10816682011-10-14 05:29  — 2011-10-14 06:23 18° 49' 25" N  37° 23' 57" W  View metadata report for BODC series reference number 1081668
10816812011-10-14 13:59  — 2011-10-14 15:06 18° 1' 2" N  36° 49' 59" W  View metadata report for BODC series reference number 1081681
10816932011-10-15 05:26  — 2011-10-15 06:41 16° 29' 0" N  35° 44' 36" W  View metadata report for BODC series reference number 1081693
10817002011-10-15 13:58  — 2011-10-15 14:48 15° 39' 15" N  35° 10' 22" W  View metadata report for BODC series reference number 1081700
10817122011-10-16 05:28  — 2011-10-16 06:21 13° 47' 12" N  33° 53' 39" W  View metadata report for BODC series reference number 1081712
10817242011-10-16 13:59  — 2011-10-16 14:55 12° 45' 20" N  33° 12' 9" W  View metadata report for BODC series reference number 1081724
10817362011-10-17 05:28  — 2011-10-17 06:20 10° 45' 22" N  31° 52' 36" W  View metadata report for BODC series reference number 1081736
10817482011-10-17 14:03  — 2011-10-17 14:34 9° 39' 20" N  31° 9' 1" W  View metadata report for BODC series reference number 1081748
10817612011-10-18 05:26  — 2011-10-18 06:22 7° 35' 17" N  29° 48' 25" W  View metadata report for BODC series reference number 1081761
10817732011-10-18 14:00  — 2011-10-18 14:51 6° 31' 15" N  29° 7' 45" W  View metadata report for BODC series reference number 1081773
10817852011-10-19 05:25  — 2011-10-19 06:33 4° 37' 37" N  27° 54' 57" W  View metadata report for BODC series reference number 1081785
10817972011-10-19 14:00  — 2011-10-19 14:50 3° 41' 7" N  27° 19' 3" W  View metadata report for BODC series reference number 1081797
10818042011-10-20 05:27  — 2011-10-20 06:18 1° 55' 46" N  26° 13' 22" W  View metadata report for BODC series reference number 1081804
10818162011-10-20 13:29  — 2011-10-20 14:20 1° 2' 3" N  25° 39' 2" W  View metadata report for BODC series reference number 1081816
10818282011-10-21 05:30  — 2011-10-21 06:22 1° 1' 54" S  25° 0' 11" W  View metadata report for BODC series reference number 1081828
10818412011-10-22 05:27  — 2011-10-22 06:33 4° 40' 32" S  25° 1' 19" W  View metadata report for BODC series reference number 1081841
10818532011-10-22 13:30  — 2011-10-22 14:27 5° 36' 38" S  25° 1' 38" W  View metadata report for BODC series reference number 1081853
10818652011-10-23 05:30  — 2011-10-23 06:27 7° 42' 25" S  25° 2' 26" W  View metadata report for BODC series reference number 1081865
10818772011-10-23 13:29  — 2011-10-23 14:28 8° 42' 17" S  25° 3' 19" W  View metadata report for BODC series reference number 1081877
10818892011-10-24 05:24  — 2011-10-24 06:15 10° 41' 16" S  25° 3' 16" W  View metadata report for BODC series reference number 1081889
10818902011-10-24 13:31  — 2011-10-24 14:33 11° 39' 41" S  25° 3' 55" W  View metadata report for BODC series reference number 1081890
10819082011-10-25 05:32  — 2011-10-25 06:31 13° 34' 52" S  25° 4' 1" W  View metadata report for BODC series reference number 1081908
10819212011-10-26 04:55  — 2011-10-26 05:55 15° 55' 29" S  25° 5' 20" W  View metadata report for BODC series reference number 1081921
10819332011-10-26 13:32  — 2011-10-26 14:37 16° 57' 26" S  25° 5' 32" W  View metadata report for BODC series reference number 1081933
10819452011-10-27 04:55  — 2011-10-27 05:53 18° 31' 29" S  25° 6' 5" W  View metadata report for BODC series reference number 1081945
10819572011-10-28 04:57  — 2011-10-28 05:54 20° 0' 43" S  25° 5' 22" W  View metadata report for BODC series reference number 1081957
10819692011-10-28 13:35  — 2011-10-28 14:28 21° 5' 34" S  25° 4' 37" W  View metadata report for BODC series reference number 1081969
10819702011-10-29 04:56  — 2011-10-29 05:49 23° 4' 23" S  25° 3' 20" W  View metadata report for BODC series reference number 1081970
10819822011-10-29 13:32  — 2011-10-29 14:22 24° 6' 42" S  25° 2' 36" W  View metadata report for BODC series reference number 1081982
10819942011-10-30 04:56  — 2011-10-30 05:48 26° 5' 24" S  25° 1' 30" W  View metadata report for BODC series reference number 1081994
10820082011-10-30 13:29  — 2011-10-30 14:27 27° 9' 28" S  25° 0' 30" W  View metadata report for BODC series reference number 1082008
10820212011-10-31 04:56  — 2011-10-31 06:12 28° 42' 1" S  25° 56' 56" W  View metadata report for BODC series reference number 1082021
10820332011-10-31 13:31  — 2011-10-31 14:41 29° 22' 38" S  26° 51' 30" W  View metadata report for BODC series reference number 1082033
10820452011-11-01 04:57  — 2011-11-01 05:56 30° 44' 7" S  28° 44' 13" W  View metadata report for BODC series reference number 1082045
10820572011-11-01 13:31  — 2011-11-01 14:37 31° 26' 57" S  29° 42' 8" W  View metadata report for BODC series reference number 1082057
10820692011-11-02 04:59  — 2011-11-02 06:14 32° 43' 34" S  31° 29' 36" W  View metadata report for BODC series reference number 1082069
10820702011-11-05 04:59  — 2011-11-05 06:00 38° 13' 14" S  39° 31' 12" W  View metadata report for BODC series reference number 1082070
10820822011-11-05 13:34  — 2011-11-05 14:29 39° 2' 26" S  40° 44' 40" W  View metadata report for BODC series reference number 1082082
10820942011-11-06 04:56  — 2011-11-06 06:08 40° 20' 17" S  42° 45' 43" W  View metadata report for BODC series reference number 1082094
10821012011-11-06 14:32  — 2011-11-06 15:30 41° 7' 31" S  43° 58' 34" W  View metadata report for BODC series reference number 1082101
10821132011-11-07 04:56  — 2011-11-07 06:00 42° 18' 42" S  45° 53' 42" W  View metadata report for BODC series reference number 1082113
10821252011-11-07 14:29  — 2011-11-07 15:20 43° 6' 36" S  47° 10' 44" W  View metadata report for BODC series reference number 1082125
10821372011-11-08 04:56  — 2011-11-08 06:14 44° 19' 55" S  49° 11' 30" W  View metadata report for BODC series reference number 1082137
10821492011-11-08 14:34  — 2011-11-08 15:29 45° 5' 58" S  50° 29' 57" W  View metadata report for BODC series reference number 1082149
10821502011-10-25 10:59  — 2011-10-25 16:24 14° 10' 38" S  25° 4' 31" W  View metadata report for BODC series reference number 1082150
Discrete samples 
73  CTD frame plus rosette samplerPrimary production in the water column
Phytoplankton taxonomic abundance in water bodies
Phosphate concentration parameters in the water column
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Plankton abundance per unit volume of the water column
Silicate concentration parameters in the water column
Dissolved oxygen parameters in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Salinity of the water column
Oxygen production and respiration in the water column
Nitrite concentration parameters in the water column
Reference numbers
Chlorophyll pigment concentrations in the water column
180  Sample taken from ship's non-toxic supplySalinity of the water column
Chlorophyll pigment concentrations in the water column