Physical and biogeochemical oceanography data from underway measurements with an AquaLine Ferrybox during the Antarctic Circumnavigation Expedition (ACE)


Data file(s): ace_ferrybox_data_1min.csv

File header: 
datetime [YYYY-MM-DDTHH:MM:SS+00:00]: Date and time [UTC]
latitude [degree_north]: Latitude [decimal degree North]
longitude [degree_east]: Longitude [decimal degree East]
leg [-]: Leg number [1-3]
pressure [dbar]: Pressure on underway system relative to atmospheric standard pressure 1013.25 mbar [decibars]
sea_water_temperature [degree_celsius]: Temperature on international temperature scale 1990 [degree Celsius]
sea_water_practical_salinity [-]: Practical salinity on Practical Salinity Scale 1978 [-]
sea_water_sigma_theta [kg m-3]: Potential density anomaly (potential density - 1000 kg m-3) referenced to 0 dbar [kg m-3]
turbidity [FTU]: Turbidity [FTU]
concentration_of_chlorophyll_a_in_sea_water [ug L-1]: Chlorophyll-a concentration [ug L-1]
moles_of_oxygen_per_unit_mass_in_sea_water [mol kg-1]: dissolved_oxygen [mol kg-1]
fractional_saturation_of_oxygen_in_sea_water [-]: Fractional saturation of dissolved oxygen [0-1]
sea_water_ph_reported_on_total_scale [-]: pH on total scale [-]

Missing values are filled with value ‘NaN’


Data file(s): ace_satellite_data_1min.csv

File header: 
datetime [YYYY-MM-DDTHH:MM:SS+00:00]: Date and time [UTC]
latitude [degree_north]: Latitude [decimal degree North]
longitude [degree_east]: Longitude [decimal degree East]
leg [-]: Leg number [1-4]
sea_surface_temperature [degree_celsius]: Sea-surface temperature on international temperature scale 1990 [degree Celsius]
sea_ice_area_fraction [1]: Sea-ice area fraction (concentration) [0-1]
sea_surface_height_above_geoid [m]: Absolute dynamic topography [m]
surface_geostrophic_eastward_sea_water_velocity [m s-1]: Surface ocean geostrophic eastward velocity [m s-1]
surface_geostrophic_northward_sea_water_velocity [m s-1]: Surface ocean geostrophic northward velocity [m s-1]
surface_geostrophic_sea_water_speed [m s-1]: Surface ocean geostrophic speed  [m s-1]

Missing values are filled with value ‘NaN’


Data file(s): ace_merged_uw_data_1min.csv

File header: 
datetime [YYYY-MM-DDTHH:MM:SS+00:00]: Date and time [UTC]
latitude [degree_north]: Latitude [decimal degree North]
longitude [degree_east]: Longitude [decimal degree East]
leg [-]: Leg number [1-3]
ocean_zone [-]: Ocean zone between fronts [1-5]
pressure [dbar]: Pressure on underway system relative to atmospheric standard pressure 1013.25 mbar [decibars]
sea_water_temperature [degree_celsius]: Temperature on international temperature scale 1990 [degree Celsius]
sea_water_temperature_flag [-]: Flag indicating the source of the temperature [1=Ferrybox, 3=Satellite, 8=Interpolated, 9=Missing]
sea_water_practical_salinity [-]: Practical salinity on Practical Salinity Scale 1978 [-]
sea_water_practical_salinity_flag [-]: Flag indicating the source of the salinity [1=Ferrybox, 2=Sample, 8=Interpolated, 9=Missing]
sea_water_sigma_theta [kg m-3]: Potential density anomaly (potential density - 1000 kg m-3) referenced to 0 dbar [kg m-3]
sea_water_sigma_theta_flag [-]: Flag indicating the source of sigma_theta [1=Ferrybox, 2=Salinity sample, 3=Satellite temperature, 7=Interpolated temperature, 8=Interpolated salinity, 9=Missing]
turbidity [FTU]: Turbidity [FTU]
concentration_of_chlorophyll_a_in_sea_water [ug L-1]: Chlorophyll-a concentration [ug L-1]
moles_of_oxygen_per_unit_mass_in_sea_water [mol kg-1]: dissolved_oxygen [mol kg-1]
fractional_saturation_of_oxygen_in_sea_water [-]: Fractional saturation of dissolved oxygen [0-1]
sea_water_ph_reported_on_total_scale [-]: pH on total scale [-]
sea_ice_area_fraction [1]: Sea-ice area fraction (concentration) [0-1]
sea_surface_height_above_geoid [m]: Absolute dynamic topography [m]
surface_geostrophic_eastward_sea_water_velocity [m s-1]: Surface ocean geostrophic eastward velocity [m s-1]
surface_geostrophic_northward_sea_water_velocity [m s-1]: Surface ocean geostrophic northward velocity [m s-1]
surface_geostrophic_sea_water_speed [m s-1]: Surface ocean geostrophic speed  [m s-1]

Missing values are filled with value ‘NaN’


Data file(s): ace_fronts.csv

File header: 
datetime [YYYY-MM-DDTHH:MM:SS+00:00]: Date and time [UTC]
latitude [degree_north]: Latitude [decimal degree North]
longitude [degree_east]: Longitude [decimal degree East]
leg [-]: Leg number [1-3]
Front [-]: Oceanic fronts (STF, SAF, PF, SACCF) [-]


Data file(s): ace_ferrybox_data_raw/AT_ACE_ferrybox_YYYYMMDD.csv
Note that variables and units below are provided to the best of our knowledge.

File header: 
Date [0DDMMYY]
Time [HHMMSS]
Longitude [DDD MM.dddd E]
Latitude [DD MM.dddd S]
Ship state [-]
Speed [m/s] 
Chlorophyll-a [µg/L]
Empty [-]: empty field
Empty [-]: empty field
Lux Voltage 1 [V]
Lux Voltage 2 [V]
Temperature [degree_celsius]
Oxygen [µmol]
Oxygen Saturation [%]
Temperature [degree_celsius]
D Phase [-]
B Phase [-]
R Phase [-]
B Amp [-]
B Pot [-]
R Amp [-]
Salinity [-]
Conductivity [mmhos cm-1]
Temperature [degree_celsius]
Pressure [dbar]
Turbidity [FTU]
Supply voltage [V]
Current supply [A]
Empty [-]: empty field
Empty [-]: empty field
pH sensor voltage [V]
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Empty [-]: empty field
Error Indications [-]: indicating potential data issues

Missing values are filled with value ‘0.000000’