Cruise inventory

Lance ACCACIA

Cruise summary report

Cruise Info. 
Ship name (ship code)Lance (58LA)
Cruise identifierACCACIA
Cruise period2013-03-15 — 2013-03-31
StatusCompleted
Port of departureTromsø, Norway
Port of returnTromsø, Norway
PurposeResearch
ObjectivesThe cruise took place as part of the larger NERC funded consortium project called Aerosol-Cloud Coupling And Climate Interactions in the Arctic (ACCACIA). The overarching objective of the project is to reduce uncertainty in the representation of Arctic cloud and aerosol processes in climate models. Airborne measurements of aerosol and cloud properties were made concurrent with the RV Lance research cruise, using the BAS MASIN and FAAM BAe146 aircraft, and a second research cruise on board the RRS James Clark Ross will take place in July-August 2013.

The aims of the research cruise were to make surface based in-situ measurements of marine aerosol composition and properties, and aerosol precursor gases (DMS, VOCs, halocarbons). These measurements were supported by standard oceanographic measurements such as salinity, chlorophyll-a and nutrient concentrations. Bubble tank experiments were conducted, the results of which will be used to develop a primary multicomponent seaspray aerosol flux parameterisation.

The timing of the cruise was intended to capture the late winter/early spring period of sea-ice melt and the associated phytoplankton bloom has just begun. Stations were occupied alternately in open water and within the ice edge (mainly brash ice). Atmospheric measurements were made continuously, or semi-continuously, and a daily CTD cast was used to collect water samples. Some additional sampling of the pumper underway seawater supply also took place.
Chief scientistJames Lee (University of York Department of Chemistry)
ProjectAerosol-Cloud Coupling and Climate Interactions in the Arctic (ACCACIA)
Coordinating bodyUniversity of Leeds School of Earth and Environment
Cruise reportLance ACCACIA cruise report lance_accacia.pdf — access key 'C' (0.78 MB) 
Ocean/sea areas 
GeneralGreenland Sea
Norwegian Sea
Track chartsLance ACCACIA cruise track — lance_accaciatrk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 14
Description: Salinity, measurements; continuous recording of surface water intake using Seabird 45 TSG; data logged at ten minute intervals
Water bottle stationsQuantity: number of profiles = 16
Description: CTD casts to ~200 m; Temperature, salinity, fluorescence, PAR and transmissivity recorded. Sensors owned, maintntained and deployed by Norwegian Polar Institute (NPI); data archived by NPI
CTD stationsQuantity: number of profiles = 16
Description: CTD casts to ~200 m; Temperature, salinity, fluorescence, PAR and transmissivity recorded. Sensors owned, maintntained and deployed by Norwegian Polar Institute (NPI); data archived by NPI
Other physical oceanographic measurementsQuantity: number of profiles = 14
Description: Bubble tank aerosol production (from near-surface CTD samples), measured as number-size distributions (TSI 3080 SMPS)
Chemical oceanography 
Other dissolved gasesQuantity: number of profiles = 14
Description: Trace gas (DMS, halocarbons) in seawater; measurements by purge and trap gas chromatography-mass spectrometry; discrete water samples from 8 depths (typically 150, 120, 100, 80, 60, 40, 20, 3 m) collected using Niskin bottles during CTD casts
Other dissolved gasesQuantity: number of samples = 500
Description: Trace gas (DMS, halocarbons) in surface seawater; measurements by purge and trap gas chromatography-mass spectrometry; sampling over 20 minute intervals approximately once per 45 minutes while ship underway; seawater from surface water intake
PhosphateQuantity: number of samples = 150
Description: Filtered samples from surface water intake for determination of nutrients by autoanalyser
PhosphateQuantity: number of samples = 100
Description: Filtered samples from discrete depths for determination of nutrients by autoanalyser; collected using Niskin bottles during CTD casts
NitrateQuantity: number of samples = 150
Description: Filtered samples from surface water intake for determination of nutrients by autoanalyser
NitrateQuantity: number of samples = 100
Description: Filtered samples from discrete depths for determination of nutrients by autoanalyser; collected using Niskin bottles during CTD casts
AmmoniaQuantity: number of samples = 100
Description: Filtered samples from discrete depths for determination of nutrients by autoanalyser; collected using Niskin bottles during CTD casts
AmmoniaQuantity: number of samples = 150
Description: Filtered samples from surface water intake for determination of nutrients by autoanalyser
Other chemical oceanographic measurementsQuantity: number of profiles = 14
Description: Seawater samples for DMSPt determination by purge and trap gas chromatography-mass spectrometry; discrete water samples from 6 depths (typically 120, 80, 60, 40, 20, 3 m) collected using Niskin bottles during CTD casts
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 8
Description: Fast repetition rate fluorometry, continuous recording of surface water intake; measurements at 30 second intervals
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 150
Description: Size segregated chlorophyll samples from surface water intake for analysis by fluorometry
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of samples = 100
Description: Size segregated chlorophyll samples for analysis by fluorometry; discrete water samples from 8 depths collected using Niskin bottles during CTD casts
Dissolved organic matter (inc DOC)Quantity: number of samples = 15
Description: Dissolved organic matter samples extracted from surface seawater for characterisation of organic content by liquid chromatography-mass spectrometry ; samples collected with Niskin bottles during CTD casts
Other biological/fisheries measurementQuantity: number of measurements = 12
Description: Haloperoxidase activity measurements
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 18
Description: Relative wind speed and direction, continuous recording using Gill ultrasonic 2D anemometer; data logged at one minute intervals
Routine standard measurementsQuantity: activity duration in days = 18
Description: Temperature and relative humidity (Rotronic hygroclip)
Atmospheric chemistryQuantity: activity duration in days = 15
Description: Aerosol number-size distributions by differential mobility analysis (DMPS)
Atmospheric chemistryQuantity: activity duration in days = 18
Description: Aerosol number-size distributions by optical particle counting (GRIMM 1.108)
Atmospheric chemistryQuantity: activity duration in days = 18
Description: Optical equivalent aerosol black carbon concentration (Thermo MAAP)
Atmospheric chemistryQuantity: activity duration in days = 18
Description: Aerosol number concentration (TSI 3776 CPC)
Atmospheric chemistryQuantity: activity duration in days = 17
Description: Single particle aerosol black carbon mass (DMT SP2)
Atmospheric chemistryQuantity: number of samples = 15
Description: Day-integrated, size resolved aerosol samples taken using a compact cascade impactor (CCI) for offline analysis for soluble ions
Atmospheric chemistryQuantity: number of samples = 1440
Description: Trace gas (DMS, halocarbons) in air; measurements by gas chromatography-mass spectrometry; semi-continuous sampling (20 minutes sampling per data point) using air intake line mounted on forward mast
Atmospheric chemistryQuantity: number of samples = 15
Description: High volume aerosol samples for characterisation of organic content by liquid chromatography-mass spectrometry; collected using Ecotech HiVol 3000 air sampler controlled according to wind direction to avoid sampling stack emissions
Atmospheric chemistryQuantity: activity duration in days = 15
Description: Aerosol hygroscopic growth factor spectra (HTDMA)
Atmospheric chemistryQuantity: activity duration in days = 15
Description: Size-resolved aerosol cloud condensation nucleii (DMT CCN)
Atmospheric chemistryQuantity: activity duration in days = 14
Description: A 14 days M71 Trace gas (NOx, O3) in air. Continuous measurements by Chemiluminesence and UV absorption respectively (10 minute averaging) using air intake line mounted on the forward mast.
Atmospheric chemistryQuantity: activity duration in days = 2
Description: Aerosol composition by online mass spectrometry (Aerodyne HR-TOF-AMS)
Other meteorological measurementsQuantity: activity duration in days = 16
Description: 3D apparent wind vector (Metek sonic anemometer)
Data held at BODC 
Discrete samples 
1396  Atmospheric air sampling pumpConcentration of inorganic halogens in the atmosphere
Sulphur species concentrations in the atmosphere
Concentration of other hydrocarbons in the atmosphere
14  CTD frame plus rosette samplerOrganosulphur and organoselenium species concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Other halocarbon concentrations in water bodies
Concentration of other hydrocarbons in the water column
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
391  Sample taken from ship's non-toxic supplyOrganosulphur and organoselenium species concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Other halocarbon concentrations in water bodies
Concentration of other hydrocarbons in the water column
Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column