RRS Charles Darwin CD59

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Cruise Info.

Ship name (ship code)

RRS Charles Darwin (74AB)

Cruise identifier

CD59

Cruise period

1991-05-18 — 1991-06-10

Status

Completed

Port of departure

Ponta Delgada, Portugal

Port of return

Barry, United Kingdom

Objectives

Survey of northern half of proposed VIVALDI area.
The Vivaldi '91 trial combined the high spatial resolution of SeaSoar surveys with deep CTD stations spaced every 3 degrees of latitude on tracks 300km apart. These primary measurements were complemented by a shipboard acoustic Doppler current profiler, chlorofluorocarbon tracer chemistry, oxygen, nutrient and chlorophyll measurements, and mean surface meteorology.
The aims of Vivaldi are to:
- calculate seasonal upper ocean heat and fresh water budgets
- map isopycnic potential vorticity variations from the sub-tropical gyre to the subpolar gyre
- map interannual changes in the properties of water masses formed by deep convection
- calculate statistics of upper ocean parameters and air sea fluxes
- investigate the role of eddies.

Chief scientist

Harry Leach (University of Liverpool Department of Earth Sciences)

Project

VIVALDI UK WOCE

Coordinating body

NERC CRP/UK WOCE

Cruise report

(1.96 MB)

Ocean/sea areas

General

North East Atlantic Ocean (limit 40W)

Specific

North Atlantic

Track charts

Measurements

Physical oceanography

Surface measurements underway (T,S)

Quantity: track kilometres = 6112

CTD stations

Quantity: number of stations = 21

Subsurface temperature and salinity measurements

Quantity: track kilometres = 6112
Description: SeaSoar

Transparency (eg transmissometer)

Quantity: number of stations = 18

Optics (eg underwater light levels)

Quantity: track kilometres = 6112
Description: SeaSoar, downwelling PAR

Geochemical tracers (eg freons)

Quantity: number of stations = 17
Description: CFC-11, CFC-12, CFC-13

Current profiler (eg ADCP)

Quantity: track kilometres = 6112
Description: Shipborne ADCP

Chemical oceanography

Oxygen

Quantity: number of stations = 21

Phosphate

Quantity: number of stations = 18

Phosphate

Quantity: track kilometres = 6112
Description: underway surface sampling from non-toxic supply at half hourly intervals

Nitrate

Quantity: number of stations = 18

Nitrate

Quantity: track kilometres = 6112
Description: surface underway sampling from non-toxic supply at half hourly intervals

Silicate

Quantity: number of stations = 18

Silicate

Quantity: track kilometres = 6112
Description: surface underway sampling from non-toxic supply at half hourly intervals

Biology and fisheries

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: track kilometres = 6112
Description: surface underway

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: track kilometres = 6112
Description: SeaSoar with Aquatrak fluorometer

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of samples = 18
Description: samples

Phytoplankton pigs (eg chlorophyll, fluorescence)

Quantity: number of samples = 18

Phytoplankton

Quantity: number of samples = 17

Zooplankton

Quantity: number of hauls = 18
Description: 55cm zooplankton net lowered to 100m after each CTD

Pelagic bacteria/micro-organisms

Quantity: number of samples = 107
Description: bacteria slides

Meteorology

Incident radiation

Quantity: track kilometres = 6112
Description: surface underway PAR

Routine standard measurements

Quantity: track kilometres = 6112
Description: Underway Met.

Geology and geophysics

Single-beam echosounding

Quantity: track kilometres = 6112
Description: Simrad echosounder

Data held at BODC

Get data

Series/Profiles

31 Bottle station

Reference numbers
Phosphate concentration parameters in the water column
Vertical spatial coordinates
Silicate concentration parameters in the water column
Phaeopigment concentrations in the water column
Nitrate concentration parameters in the water column
Quality control flags
Chlorophyll pigment concentrations in water bodies

[Show series]

[Hide series]

BODC id	Date/Time	Location
1259978	1991-05-22 15:17	48° 1' 19" N 32° 5' 52" W
1260003	1991-05-24 23:59	53° 59' 15" N 33° 45' 13" W
1687216	1991-05-20 08:41	41° 59' 50" N 30° 52' 22" W
1687290	1991-05-28 06:58	48° 0' 11" N 28° 31' 4" W
1260027	1991-05-27 02:51	51° 5' 22" N 28° 6' 51" W
1260039	1991-05-28 06:58	48° 0' 11" N 28° 31' 4" W
1260076	1991-06-02 18:37	51° 0' 25" N 20° 38' 41" W
1687308	1991-05-29 08:57	48° 0' 1" N 24° 2' 39" W
1687321	1991-05-30 12:31	50° 59' 25" N 24° 37' 15" W
1687394	1991-06-08 04:00	53° 59' 48" N 14° 59' 47" W
1260015	1991-05-25 22:57	53° 59' 37" N 29° 11' 4" W
1260040	1991-05-29 08:57	48° 0' 1" N 24° 2' 39" W
1687241	1991-05-22 15:17	48° 1' 19" N 32° 5' 52" W
1687277	1991-05-25 22:57	53° 59' 37" N 29° 11' 4" W
1687357	1991-06-02 18:37	51° 0' 25" N 20° 38' 41" W
1687369	1991-06-04 07:30	48° 1' 54" N 19° 55' 36" W
1687382	1991-06-06 17:03	51° 0' 28" N 15° 59' 43" W
1687345	1991-06-01 16:11	53° 59' 52" N 20° 19' 33" W
1259954	1991-05-20 08:41	41° 59' 50" N 30° 52' 22" W
1259966	1991-05-21 13:17	45° 0' 22" N 31° 27' 26" W
1259991	1991-05-23 18:21	50° 44' 17" N 32° 50' 1" W
1260064	1991-06-01 16:11	53° 59' 52" N 20° 19' 33" W
1687265	1991-05-24 23:59	53° 59' 15" N 33° 45' 13" W
1687370	1991-06-05 10:01	47° 58' 56" N 15° 56' 44" W
1260052	1991-05-31 18:49	54° 0' 1" N 24° 34' 51" W
1687204	1991-05-19 09:20	39° 0' 42" N 30° 25' 51" W
1687333	1991-05-31 18:49	54° 0' 1" N 24° 34' 51" W
1259942	1991-05-19 09:20	39° 0' 42" N 30° 25' 51" W
1687228	1991-05-21 13:17	45° 0' 22" N 31° 27' 26" W
1687253	1991-05-23 18:21	50° 44' 17" N 32° 50' 1" W
1687289	1991-05-27 02:51	51° 5' 22" N 28° 6' 51" W

18 CTD/STD cast

Transmittance and attenuance of the water column
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Density of the water column
Chlorophyll pigment concentrations in water bodies

[Show series]

[Hide series]

BODC id	Date/Time	Location
971754	1991-05-21 12:11	45° 0' 22" N 31° 27' 26" W
971834	1991-05-29 07:25	48° 0' 1" N 24° 2' 39" W
971686	1991-06-02 17:00	51° 0' 25" N 20° 38' 40" W
971809	1991-05-25 21:47	53° 59' 37" N 29° 11' 4" W
971778	1991-05-23 16:41	50° 44' 17" N 32° 50' 1" W
971791	1991-05-24 22:56	53° 59' 15" N 33° 45' 13" W
971810	1991-05-27 01:25	51° 5' 22" N 28° 6' 51" W
971766	1991-05-22 13:46	48° 1' 19" N 32° 5' 52" W
971846	1991-05-30 11:03	50° 59' 25" N 24° 37' 15" W
971858	1991-05-31 17:38	54° 0' 1" N 24° 34' 51" W
971698	1991-06-04 05:51	48° 1' 54" N 19° 55' 36" W
971717	1991-06-06 15:16	51° 0' 28" N 15° 59' 43" W
971730	1991-05-19 08:33	39° 0' 42" N 30° 25' 51" W
971729	1991-06-08 02:55	53° 59' 48" N 14° 59' 47" W
971705	1991-06-05 08:07	47° 58' 57" N 15° 56' 44" W
971871	1991-06-01 15:14	53° 59' 52" N 20° 19' 33" W
971742	1991-05-20 07:50	41° 59' 51" N 30° 52' 22" W
971822	1991-05-28 05:44	48° 0' 11" N 28° 31' 4" W

1 Pumped water sample

Horizontal spatial co-ordinates
Date and time
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

[Show series]

Horizontal spatial co-ordinates
Date and time
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

[Hide series]

BODC id	Date/Time	Location	Doc.
1665116	1991-05-19 05:00 — 1991-06-08 01:13	38° 49' 16" N 33° 46' 27" W — 54° 1' 59" N 15° 2' 36" W

1 Single-beam echosounder

Horizontal spatial co-ordinates
Date and time
Bathymetry and Elevation

[Show series]

Horizontal spatial co-ordinates
Date and time
Bathymetry and Elevation

[Hide series]

BODC id	Date/Time	Location	Doc.
582213	1991-05-18 10:29 — 1991-06-10 06:11:29	37° 42' 35" N 33° 47' 43" W — 54° 3' 12" N 3° 14' 27" W

Discrete samples

21 CTD frame plus rosette sampler

Transmittance and attenuance of the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Silicate concentration parameters in the water column
Density of the water column
Phaeopigment concentrations in the water column
Chlorofluorocarbon concentrations in the water column
Nitrate concentration parameters in the water column
Chlorophyll pigment concentrations in water bodies

1184 Sample taken from ship's non-toxic supply

Phosphate concentration parameters in the water column
Salinity of the water column
Silicate concentration parameters in the water column
Phaeopigment concentrations in the water column
Nitrate concentration parameters in the water column
Chlorophyll pigment concentrations in water bodies

1372 SeaSoar profile from gridded data

Salinity of the water column
Temperature of the water column
Visible waveband radiance and irradiance measurements in the water column
Density of the water column
Chlorophyll pigment concentrations in water bodies

1906 Shipborne Acoustic Doppler Current Profile

29 Unspecified zooplankton net or nets

Resources

RRS Charles Darwin CD59

Cruise summary report

Quick links

BODC holdings

EDMED