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BODC Cruise Metadata Report for RRS Challenger (74CH) cruise CH129

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RRS Challenger (74CH) cruise CH129
Short name CH129
Objectives and Narrative Measurements were made as part of the ASGAMAGE project, supported by the EU under MAST-3. The purpose is to better understand processes which affect the exchange of climatically active trace gases between sea and air. Sea-air gas transfer velocities were determined from a purposeful release of a suite of volatile and conservative chemical tracers as a discrete patch 8 km x 1 km x 25 m in the S. North Sea, with subsequent monitoring of tracer concentrations over a 12 day period. A range of natural trace gas concentrations were measured simultaneously for calculation of their production rates and sea-air fluxes. Supporting measurements of physical variables thought to influence gas exchange were made continuously. Measurements were co-ordinated to coincide with complementary data collection on "MEETPOST NOORDWIJK".
Ship RRS Challenger
Departure Port Portland Harbour, United Kingdom
Departure Date 1996-10-16
Arrival Port Great Yarmouth, United Kingdom
Arrival Date 1996-10-31
Principal Scientist(s) Robert Upstill-Goddard (Newcastle University Department of Marine Science and Coastal Management)
Responsible Organisation Newcastle University Department of Marine Science and Coastal Management, University of East Anglia School of Environmental Sciences
Associated Project(s) ASGAMAGE (The ASGASEX MAGE Project)
IHB Sea Areas Visited North Sea
Marsden Squares Visited 216;1
Work Area Description Southern North Sea
Work Area Bounding Polygon 50N,0E; 55N,0E; 55N,5E; 50N,5E; 50N,0E
Southern Limit 50N
Northern Limit 55N
Western Limit 0E
Eastern Limit 5E

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of profiles = 37
Description: CTD casts  
Current profiler (eg ADCP) Quantity: activity duration in days = 15
Description: ADCP  
Optics (eg underwater light levels) Quantity: number of profiles = 37
Description: Transmissometer on CTD frame  
Surface drifters/drifting buoys Quantity: number of deployments = 3
Description: Argos buoys  
Surface measurements underway (T,S) Quantity: number of samples = 24
Description: Underway discretes: Rhodamine, 3He, SF6 measurements  
Surface measurements underway (T,S) Quantity: activity duration in days = 15
Description: Thermosalinograph  
Transparency (eg transmissometer) Quantity: activity duration in days = 15
Description: Transmissometer  
Water bottle stations Quantity: number of samples = 150
Description: Phytoplankton counts/biomass  
Water bottle stations Quantity: number of samples = 17
Description: SPM gravimetrics  
Water bottle stations Quantity: number of samples = 56
Description: Discrete chlorophyll and phaeopigments on CTD bottles  
Water bottle stations Quantity: number of profiles = 37
Description: Water bottle rosette on CTD frame  
Water bottle stations Quantity: number of samples = 14
Description: Winkler titrations  
Chemical oceanography  
Ammonia Quantity: number of samples = 44
Description: CTD bottle and underway discrete nutrients  
Carbon dioxide Quantity: number of samples = 530
Description: Underway, CO analyses from non-toxic pump  
Nitrate Quantity: number of samples = 44
Description: CTD bottle and underway discrete nutrients  
Other chemical oceanographic measurements Quantity: activity duration in days = 12
Description: Continuous SF6 tracer monitoring  
Other chemical oceanographic measurements Quantity: number of samples = 45
Description: Underway NMHC (non-methyl hydrocarbons) CTD bottle  
Other chemical oceanographic measurements Quantity: number of samples = 50
Description: Underway NMHC on non-toxic/clean pump samples  
Other chemical oceanographic measurements Quantity: number of samples = 39
Description: Methane (CTD bottle samples)  
Other chemical oceanographic measurements Quantity: number of samples = 8
Description: Underway methane on non-toxic samples  
Other dissolved gases Quantity: number of samples = 8
Description: Underway methane on non-toxic samples  
Other dissolved gases Quantity: number of samples = 39
Description: Methane (CTD bottle samples)  
Other dissolved gases Quantity: number of samples = 50
Description: Underway NMHC on non-toxic/clean pump samples  
Other dissolved gases Quantity: number of samples = 45
Description: Underway NMHC (non-methyl hydrocarbons) CTD bottle  
Oxygen Quantity: number of samples = 14
Description: Winkler titrations  
Oxygen Quantity: number of samples = 20
Description: Underway Winkler O2 titrations for oxygen calibration  
Oxygen Quantity: number of profiles = 37
Description: Oxygen sensor attached to CTD frame  
Oxygen Quantity: activity duration in days = 15
Description: Oxygen sensor VSI 6000  
Phosphate Quantity: number of samples = 44
Description: CTD bottle and underway discrete nutrients  
Silicate Quantity: number of samples = 44
Description: CTD bottle and underway discrete nutrients  
Contamination  
Suspended matter Quantity: number of samples = 14
Description: SPM discretes for calibration of transmissometer  
Suspended matter Quantity: number of samples = 17
Description: SPM gravimetrics  
Biology and fisheries  
Pelagic bacteria/micro-organisms Quantity: number of samples = 3
Description: Samples from non-toxic spores  
Pelagic bacteria/micro-organisms Quantity: number of samples = 33
Description: Samples from CTD bottles for spore incubations  
Phytoplankton Quantity: number of samples = 150
Description: Phytoplankton counts/biomass  
Phytoplankton Quantity: number of samples = 45
Description: Phytoplankton counts/biomass (Non-toxic supply)  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of profiles = 37
Description: Fluorometer attached to CTD frame  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of samples = 73
Description: Underwater discrete chlorophylls for fluorometer calibration  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: activity duration in days = 15
Description: Fluorometer  
Phytoplankton pigs (eg chlorophyll, fluorescence) Quantity: number of samples = 56
Description: Discrete chlorophyll and phaeopigments on CTD bottles  
Meteorology  
Atmospheric chemistry Quantity: number of samples = 92
Description: Discrete atmospheric CO in air  
Atmospheric chemistry Quantity: number of deployments = 1
Description: Tracer release of Rhodamine, 3He, SF6, spores  
Atmospheric chemistry Quantity: number of samples = 530
Description: Underway, CO analyses from non-toxic pump  
Atmospheric chemistry Quantity: number of samples = 13
Description: Atmospheric NMHCs  
Atmospheric chemistry Quantity: number of samples = 210
Description: CTD bottle: Rhodamine, 3He, SF6 measurements  
Incident radiation Quantity: activity duration in days = 15
Description: Solar, 1 II PAR, planar PAR met. light meters  
Other meteorological measurements Quantity: activity duration in days = 15
Description: Atmos. pressure, wind velocity, wet/dry bulb temperatures  

Cruise Inventory Mooring/Buoy Operations

No information on datasets is currently available

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
13 Bottle station Dissolved oxygen parameters in the water column
Quality control flags
Reference numbers
Vertical spatial coordinates
1 Multiple instrument types Air pressure
Air temperature
Atmospheric humidity
Bathymetry and Elevation
Chlorophyll pigment concentrations in water bodies
Concentration of suspended particulate material in the water column
Date and time
Dissolved oxygen parameters in the water column
Horizontal spatial co-ordinates
Salinity of the water column
Solar Radiation
Temperature of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the atmosphere
Wind strength and direction
1 Pumped water sample Date and time
Dissolved oxygen parameters in the water column
Horizontal spatial co-ordinates

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
610098 Multiple instrument types 1996-10-16 16:00Z to 1996-10-31 17:46Z 50° 15' N to 52° 39' N; 2° 26' W to 4° 27' E Click for more
1850003 Pumped water sample 1996-10-17 12:12Z to 1996-10-30 16:25Z 51° 18' N to 52° 37' N; 1° 43' E to 4° 25' E Click for more
1869003 Bottle station 1996-10-19 19:24Z 52° 15' N, 4° 3' E Click for more
1869015 Bottle station 1996-10-20 13:48Z 52° 21' N, 4° 10' E Click for more
1869027 Bottle station 1996-10-20 16:41Z 52° 15' N, 4° 20' E Click for more
1869039 Bottle station 1996-10-21 18:45Z 52° 18' N, 4° 4' E Click for more
1869040 Bottle station 1996-10-22 09:37Z 52° 18' N, 4° 4' E Click for more
1869052 Bottle station 1996-10-24 09:26Z 52° 14' N, 3° 59' E Click for more
1869064 Bottle station 1996-10-24 19:52Z 52° 19' N, 4° 7' E Click for more
1869076 Bottle station 1996-10-25 05:22Z 52° 23' N, 4° 11' E Click for more
1869088 Bottle station 1996-10-25 17:23Z 52° 25' N, 4° 13' E Click for more
1869107 Bottle station 1996-10-26 07:58Z 52° 26' N, 4° 15' E Click for more
1869119 Bottle station 1996-10-29 17:11Z 52° 21' N, 2° 2' E Click for more
1869120 Bottle station 1996-10-30 11:18Z 52° 35' N, 4° 9' E Click for more
1869132 Bottle station 1996-10-30 13:01Z 52° 36' N, 4° 13' E Click for more

Project Database

# Events Gear Type Parameters Held
172 Sample taken from ship's non-toxic supply Concentration of alkenes and alkynes in the water column
Concentration of alkenes and alkynes in the atmosphere
Salinity of the water column
Dissolved oxygen parameters in the water column
Concentration of other hydrocarbons in the atmosphere
Concentration of suspended particulate material in the water column
Concentration of alkanes in the water column

Concentration of alkanes in the atmosphere
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies
12 Pressurised air bottle sample Concentration of alkenes and alkynes in the atmosphere
Concentration of other hydrocarbons in the atmosphere
Concentration of alkanes in the atmosphere
51 All plastic clean surface pumped supply Concentration of alkenes and alkynes in the water column
Dissolved oxygen parameters in the water column
Concentration of alkanes in the water column

Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies
37 CTD frame plus rosette sampler Transmittance and attenuance of the water column
Concentration of alkenes and alkynes in the water column
Dissolved oxygen parameters in the water column
Salinity of the water column
Temperature of the water column
Concentration of suspended particulate material in the water column
Concentration of alkanes in the water column
Visible waveband radiance and irradiance measurements in the water column
Density of the water column
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report