Cruise inventory

RRS Discovery D313 (DOGEE SOLAS)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD313 (DOGEE SOLAS)
Cruise period2006-11-07 — 2006-12-06
StatusCompleted
Port of departureGovan, United Kingdom
Port of returnGovan, United Kingdom
PurposeResearch
ObjectivesRRS Discovery cruise D313 involved two distinct but inter-related UKSOLAS projects: DOGEE-SOLAS (The UK SOLAS Deep Ocean Gas Exchange Experiment), P.I. Rob Upstill-Goddard, University of Newcastle upon Tyne, and SEASAW (Sea Spray and Whitecaps), P.I. Ian Brooks, University of Leeds. Both projects are primarily concerned with physical exchange processes at the air-sea interface and the determination of gas transfer velocities. Additionally SEASAW aims to quantify sea-salt aerosol source functions. The projects thus have a common overall research goal; parameterization of the air-sea gas and aerosol exchange processes, which is essential for effectively modelling climate. Significantly reducing the associated uncertainties is a central goal of UK SOLAS, of which this cruise was a component. In brief, specific cruise objectives were:

* Determine open ocean gas transfer velocities at high wind speeds through a dual-tracer release (3He & SF6).
* Measure underway, total gas tension, dissolved O2, and CO2 to obtain independent air-sea gas exchange estimates.
* Record key meteorological variables
* Measure air-sea fluxes of CO2, sensible heat, latent heat and momentum using the AUTOFLUX automated sensor array.
* Quantify flow distortion biases in the direct flux measurements via the use of established models.
* Determine the sea spray source function by direct eddy-covariance, and optical and condensation particle counters.
* Investigate production and fate of sea spray aerosols at the sea surface using optical particle and bubble observations.
* Study aerosol particle composition to identify sources and interactions between the sea spray and other aerosol and gases.
* Record and measure whitecap coverage and wave breaking coincident with the air-sea flux measurements
* Quantify acoustically, bubble populations produced by breaking waves.

Unfortunately, due to a combination of exceptionally bad weather, downtime due to CTD loss and winch replacement, and major ship systems failure, most of the major cruise objectives were not met at all and some were only partially fulfilled.
Chief scientistRobert Upstill-Goddard (Newcastle University School of Marine Science and Technology)
ProjectUK SOLAS
Coordinating bodyNERC
Cruise reportRRS Discovery D313 (DOGEE SOLAS) cruise report d313.pdf — access key 'C' (4.98 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificNE Atlantic west of Scotland and Scottish Western Isles: 55-57N, 05-12W
Track chartsRRS Discovery D313 (DOGEE SOLAS) cruise track — d313trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Geochemical tracers (eg freons)Quantity: activity duration in days = 3
Description: Underway continuous (every 4 min) measurements of surface (6m) SF6 tracer by electron capture detection gas chromatography
Geochemical tracers (eg freons)Quantity: number of stations = 8
Description: Vertical CTD casts (mixed layer, 150-300m): SF6 tracer by electron capture detection gas chromatography
Geochemical tracers (eg freons)Quantity: number of stations = 8
Description: Vertical CTD casts (mixed layer, 150-300m): 3He tracer: collected but not analysed (on-shore mass spectrometry) due to failure of cruise objectives
Chemical oceanography 
OxygenQuantity: activity duration in days = 11
Description: Underway (5m) dissolved O2, dissolved CO2, total gas tension, temperature and salinity.
Carbon dioxideQuantity: number of stations = 6
Description: Vertical CTD casts (mixed layer, 150-300m): discrete pCO2 by gas equilibration/LICOR detection.
Carbon dioxideQuantity: activity duration in days = 20
Description: Ship-mounted continuous underway surface pCO2 by gas equilibration/LICOR detection: CASIX system.
Carbon dioxideQuantity: activity duration in days = 20
Description: continuous underway surface pCO2 by gas equilibration/LICOR detection:
Carbon dioxideQuantity: activity duration in days = 11
Description: Underway (5m) dissolved O2, dissolved CO2, total gas tension, temperature and salinity.
Other dissolved gasesQuantity: activity duration in days = 11
Description: Underway (5m) dissolved O2, dissolved CO2, total gas tension, temperature and salinity.
Moorings, landers, buoys 
Physical oceanography 
Subsurface temperature measurements56° 44' 24" N  11° 18' 0" W — Surface Argos/RF drifter/drogue/thermistor chain: position location for gaseous tracer patch. Lost during cruise; not recovered.
Surface drifters/drifting buoys56° 44' 24" N  11° 18' 0" W — Surface Argos/RF drifter/drogue/thermistor chain: position location for gaseous tracer patch. Lost during cruise; not recovered.
Surface drifters/drifting buoys56° 44' 24" N  11° 18' 0" W — Surface Argos/RF drifter with drogue: position location for gaseous tracer patch. Lost during cruise;not recovered
Neutrally buoyant floats56° 25' 12" N  11° 15' 0" W — Neutrally buoyant float for oxygen, nitrogen, salinity and temperature measurements for use in air-sea flux calculations. Lost during cruise; recovered post-cruise
Instrumented wave measurements56° 49' 47" N  6° 0' 0" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered.
Instrumented wave measurements55° 18' 36" N  5° 24' 36" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered, redeployed and recovered.
Instrumented wave measurements56° 48' 36" N  5° 15' 0" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered.
Instrumented wave measurements55° 18' 36" N  5° 24' 36" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered, redeployed and recovered.
Other physical oceanographic measurements56° 49' 47" N  6° 0' 0" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered.
Other physical oceanographic measurements56° 48' 36" N  5° 15' 0" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered.
Other physical oceanographic measurements55° 18' 36" N  5° 24' 36" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered, redeployed and recovered.
Other physical oceanographic measurements55° 18' 36" N  5° 24' 36" W — NOC Spar buoy: wave wire and acoustic bubble data. Recovered, redeployed and recovered.
Other physical oceanographic measurements56° 46' 48" N  5° 13' 48" W — Tethered Meteorological buoy: aerosol probes and near-surface bubble imaging. Recovered.
Other physical oceanographic measurements56° 44' 24" N  5° 13' 48" W — Tethered Meteorological buoy: aerosol probes and near-surface bubble imaging. Recovered; damaged by ship hull
Other physical oceanographic measurements55° 21' 35" N  5° 22' 47" W — Tethered Meteorological buoy: aerosol probes and near-surface bubble imaging. Recovered.
Chemical oceanography 
Oxygen56° 25' 12" N  11° 15' 0" W — Neutrally buoyant float for oxygen, nitrogen, salinity and temperature measurements for use in air-sea flux calculations. Lost during cruise; recovered post-cruise
Other dissolved gases56° 25' 12" N  11° 15' 0" W — Neutrally buoyant float for oxygen, nitrogen, salinity and temperature measurements for use in air-sea flux calculations. Lost during cruise; recovered post-cruise
Meteorology 
Other meteorological measurements56° 44' 24" N  5° 13' 48" W — Tethered Meteorological buoy: aerosol probes and near-surface bubble imaging. Recovered; damaged by ship hull
Other meteorological measurements56° 46' 48" N  5° 13' 48" W — Tethered Meteorological buoy: aerosol probes and near-surface bubble imaging. Recovered.
Other meteorological measurements55° 21' 35" N  5° 22' 47" W — Tethered Meteorological buoy: aerosol probes and near-surface bubble imaging. Recovered.
Data held at BODC 
Series/Profiles 
1  Pumped air sample

BODC idDate/TimeLocationDoc.
10288852006-11-16 11:04:15  — 2006-12-02 01:25:08 55° 14' 36" N  12° 2' 10" W — 58° 36' 12" N  5° 4' 41" W  View metadata report for BODC series reference number 1028885
Discrete samples 
9  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Salinity of the water column
Optical backscatter
Temperature of the water column
Dissolved oxygen parameters in the water column