ERDDAP > info > HakaiColumbiaFerryResearch

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph		files	Underway Surface Seawater and Marine Boundary Layer Observations Made from the Alaska Marine Highway System M/V Columbia		F       M	background			University of Ala...	HakaiColumbiaFerryResearch

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	Trajectory
attribute	NC_GLOBAL	cdm_trajectory_variables	String	vessel_id
attribute	NC_GLOBAL	contributor_contact	String	wiley.evans at hakai.org
attribute	NC_GLOBAL	contributor_name	String	Wiley Evans
attribute	NC_GLOBAL	contributor_role	String	Primary Investigator
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	date_created	String	2017-10-25
attribute	NC_GLOBAL	Easternmost_Easting	double	-122.511
attribute	NC_GLOBAL	featureType	String	Trajectory
attribute	NC_GLOBAL	geospatial_lat_max	double	59.4496
attribute	NC_GLOBAL	geospatial_lat_min	double	48.6215
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-122.511
attribute	NC_GLOBAL	geospatial_lon_min	double	-135.7158
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	String	2.0
attribute	NC_GLOBAL	geospatial_vertical_min	String	2.0
attribute	NC_GLOBAL	infoUrl	String	https://www.hakai.org
attribute	NC_GLOBAL	institution	String	University of Alaska Southeast, Alaska Coastal Rainforest Center,University of Washington Joint Institute for the Study of the Atmosphere,Hakai Institute,Alaska Department of Transportation
attribute	NC_GLOBAL	instrument	String	Aanderaa 4330F Oxygen Optode,SBE 38 ,SBE 45,General Oceanics 8050 pCO2 Measuring System with LI-COR LI-840A
attribute	NC_GLOBAL	keywords	String	Alaska, Alaska Marine Highway, carbone, Comlumbia Ferry, conductivity, inorganicCarbon, oxygen, partial pressure, pco2, salinity, seaSurfaceSalinity, seaSurfaceTemperature, temperature
attribute	NC_GLOBAL	license	String	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
attribute	NC_GLOBAL	Northernmost_Northing	double	59.4496
attribute	NC_GLOBAL	platform	String	ship
attribute	NC_GLOBAL	platform_vocabulary	String	https://vocab.nerc.ac.uk/collection/L06/current/
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	48.6215
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v79
attribute	NC_GLOBAL	subsetVariables	String	vessel_id,Type_code
attribute	NC_GLOBAL	summary	String	Between October 2017 and October 2019, underway surface water measurements were collected from the Alaska Marine Highway System M/V Columbia during 135 service route transits. The service route of the Columbia included the ports of Sitka, Juneau, Haines, Skagway, Wrangell, Petersburg, and Ketchikan in southeast Alaska, and between Ketchikan and Bellingham, WA. The vessel sailed south from Ketchikan every Wednesday, arrived in Bellingham on Friday, returned to Ketchikan on Sunday, and transited between southeast Alaska terminals between Sunday and Wednesday. Measurements of temperature, salinity, dissolved oxygen content, and CO2 partial pressure were made every 2 mins on seawater drawn into the vessel from a ~2 m intake. Seawater was delivered from the intake to analytical equipment on the car deck using a AMT 1/2 HP pump (4295-98). Temperature and salinity data were collected using a Sea-Bird SBE 45 MicroTSG Thermosalinograph, and intake temperature measured using a SBE 38 Digital Oceanographic Thermometer. Dissolved oxygen content was determined using an Aanderaa 4330F that had undergone multipoint calibration at the factory in Norway. CO2 measurements were made using a General Oceanics 8050 (GO8050) pCO2 Measuring System equipped with a LI-COR LI840A non-dispersive infrared detector. All data streams, including GPS information from an antenna and atmospheric pressure from a Vaisala barometer positioned on the foredeck, were captured by the GO8050 control computer. Atmospheric CO2 measurements were also made using the GO8050 on unaltered marine air drawn to the system through an intake located on the foredeck. The CO2 measurement scheme involved the analysis of four gas standards of known CO2 content (150 ppm, 349 ppm, 449 ppm, and 850 ppm; Praxair Distributions Inc), 12 analyses atmospheric CO2, and 240 seawater CO2 measurements in a 8.5 hour period. The atmospheric and seawater CO2 analyses were run in a sequence of 3 atmospheric measurements and 60 seawater measurements that was repeated 4 times between standardization. This project was supported by the Tula Foundation and Alaska Ocean Observing System, and was a collaborative effort between the Hakai Institute, University of Washington Joint Institute for the Study of the Atmosphere and Ocean/NOAA Pacific Marine Environmental Laboratory, State of Alaska Department of Transportation, University of Alaska Southeast Alaska Coastal Rainforest Center, and the Alaska Ocean Observing System.
attribute	NC_GLOBAL	time_coverage_end	String	2019-10-02T22:49:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2017-10-25T19:30:00Z
attribute	NC_GLOBAL	title	String	Underway Surface Seawater and Marine Boundary Layer Observations Made from the Alaska Marine Highway System M/V Columbia
attribute	NC_GLOBAL	Westernmost_Easting	double	-135.7158
variable	vessel_id		String
attribute	vessel_id	actual_range	String	ColumbiaFerry ColumbiaFerry
attribute	vessel_id	cf_role	String	trajectory_id
attribute	vessel_id	ioos_category	String	Location
variable	Type_code		byte
attribute	Type_code	actual_range	byte	1, 7
attribute	Type_code	description	String	Equilibrator air sample = 1, Equilibrator drain air sample = 2, atmospheric air sample = 3, gas standard 1 = 4, gas standard 2 = 5, gas standard 3 = 6, gas standard 4 = 7.
attribute	Type_code	long_name	String	Type code for gas measurement sequence
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.5089598E9, 1.57005654E9
attribute	time	axis	String	T
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Date And Time
attribute	time	source_name	String	Date and time (yyyy-mm-dd hh:mm:ss)
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	PC_Date		String
attribute	PC_Date	long_name	String	PC Date (ddmmyy)
variable	PC_time		String
attribute	PC_time	long_name	String	PC Time (hhmmss)
variable	GPS_date		String
attribute	GPS_date	long_name	String	GPS Date (ddmmyy)
variable	GPS_time		String
attribute	GPS_time	long_name	String	GPS Time (hhmmss)
variable	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	48.6215, 59.4496
attribute	latitude	axis	String	Y
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		float
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	-135.7158, -122.511
attribute	longitude	axis	String	X
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	equ_temp		float
attribute	equ_temp	actual_range	float	0.0, 26.11
attribute	equ_temp	long_name	String	Equ Temp (deg C)
attribute	equ_temp	units	String	degree_Celsius
variable	std_val		float
attribute	std_val	_FillValue	float	NaN
attribute	std_val	actual_range	float	150.0, 850.0
attribute	std_val	long_name	String	Std Val (ppm)
attribute	std_val	units	String	ppm
variable	CO2_abs		float
attribute	CO2_abs	actual_range	float	0.0, 0.18
attribute	CO2_abs	long_name	String	raw CO2 Absorbance
variable	CO2_ppm		float
attribute	CO2_ppm	actual_range	float	-3.66, 2047.14
attribute	CO2_ppm	long_name	String	Raw CO2 mole Fractions in Dry Air
attribute	CO2_ppm	units	String	ppm
variable	H2O_abs		float
attribute	H2O_abs	actual_range	float	0.0, 0.0
attribute	H2O_abs	long_name	String	Raw H2O Channel Absorbance
variable	H2O_ppm		float
attribute	H2O_ppm	actual_range	float	0.0, 0.0
attribute	H2O_ppm	long_name	String	Raw H2O Channel Mole Fractions in Dry Air
attribute	H2O_ppm	units	String	ppm
variable	LICOR_temp_deg_C		float
attribute	LICOR_temp_deg_C	actual_range	float	0.0, 51.33
attribute	LICOR_temp_deg_C	long_name	String	LICOR Cell Temperature
attribute	LICOR_temp_deg_C	units	String	degree_Celsius
variable	LICOR_pressure_mbar		float
attribute	LICOR_pressure_mbar	actual_range	float	0.0, 1032.65
attribute	LICOR_pressure_mbar	long_name	String	LICOR Pressure
attribute	LICOR_pressure_mbar	units	String	mbar
variable	equ_differential_pressure_mbar		float
attribute	equ_differential_pressure_mbar	actual_range	float	-26.08, 6.7
attribute	equ_differential_pressure_mbar	colorBarMaximum	double	10.0
attribute	equ_differential_pressure_mbar	colorBarMinimum	double	-10.0
attribute	equ_differential_pressure_mbar	long_name	String	Equilibrator Differential Pressure
attribute	equ_differential_pressure_mbar	units	String	mbar
variable	H2O_flow		float
attribute	H2O_flow	actual_range	float	0.05, 4.11
attribute	H2O_flow	long_name	String	Seawater flow
attribute	H2O_flow	units	String	L/min
variable	LICOR_flow		float
attribute	LICOR_flow	actual_range	float	-37.02, 665.0
attribute	LICOR_flow	long_name	String	LICOR Flow
attribute	LICOR_flow	units	String	mL/min
variable	equ_pump_speed		float
attribute	equ_pump_speed	actual_range	float	43.0, 255.0
attribute	equ_pump_speed	long_name	String	Equilibrator Pump Speed
attribute	equ_pump_speed	units	String	rpm
variable	vent_flow		float
attribute	vent_flow	actual_range	float	-39.18, 983.25
attribute	vent_flow	long_name	String	Secondary Equilibrator Vent Flow Meter Reading
attribute	vent_flow	units	String	mL/min
variable	atm_moisture_sensor		float
attribute	atm_moisture_sensor	actual_range	float	2.48, 9.97
attribute	atm_moisture_sensor	long_name	String	Moisture Detector Reading for Sensor on Outlet of Atmospheric Sample Line through the Condenser.
variable	equil_moisture_sensor		float
attribute	equil_moisture_sensor	actual_range	float	9.9, 9.97
attribute	equil_moisture_sensor	long_name	String	Moisture Detector Reading for Sensor on Outlet of Seawater Sample Line through the Condenser.
variable	drip_sensor		float
attribute	drip_sensor	actual_range	float	0.03, 9.97
attribute	drip_sensor	long_name	String	Moisture Detector on the Inside Bottom of the Wet Box
variable	cond_temp		float
attribute	cond_temp	actual_range	float	-0.19, 20.94
attribute	cond_temp	description	String	Temperature at which condenser is set. Used to aid in removing water vapor from the gas stream.
attribute	cond_temp	long_name	String	Temperature at which Condenser is set
attribute	cond_temp	units	String	degree_Celsius
variable	dry_box_temp		float
attribute	dry_box_temp	actual_range	float	-0.06, 30.25
attribute	dry_box_temp	long_name	String	Dry Box Temperature
attribute	dry_box_temp	units	String	degree_Celsius
variable	deck_pressure		float
attribute	deck_pressure	_FillValue	float	NaN
attribute	deck_pressure	actual_range	float	982.15, 1034.52
attribute	deck_pressure	description	String	Druck barometer pressure located on the Columbia foredeck
attribute	deck_pressure	long_name	String	Deck Pressure
attribute	deck_pressure	units	String	mbar
variable	raw_O2_uM		float
attribute	raw_O2_uM	actual_range	float	0.0, 1161.29
attribute	raw_O2_uM	description	String	Raw dissolved oxygen measurement from the Aanderaa 4330F in micro-mole per liter.
attribute	raw_O2_uM	long_name	String	Raw Oxygen Concentration
attribute	raw_O2_uM	units	String	umol/L
variable	raw_O2_Sat		float
attribute	raw_O2_Sat	actual_range	float	0.0, 303.53
attribute	raw_O2_Sat	description	String	Raw dissolved oxygen percent saturation from the Aanderaa 4330F.
attribute	raw_O2_Sat	long_name	String	Raw O2 Percentage of Saturation
attribute	raw_O2_Sat	units	String	%
variable	O2_Temp		float
attribute	O2_Temp	actual_range	float	0.0, 30.17
attribute	O2_Temp	long_name	String	Oxygen Sensor Temperature
attribute	O2_Temp	standard_name	String	temperature_of_sensor_for_oxygen_in_sea_water
attribute	O2_Temp	units	String	degree_Celsius
variable	Cal_Phase		float
attribute	Cal_Phase	actual_range	float	0.0, 45.62
attribute	Cal_Phase	long_name	String	Calibrated phase from the Aanderaa 4330F
variable	TCPhase		float
attribute	TCPhase	actual_range	float	0.0, 45.16
attribute	TCPhase	long_name	String	Temperature compensated phase from the Aanderaa 4330F
variable	C1RPh		float
attribute	C1RPh	actual_range	float	0.0, 54.09
attribute	C1RPh	long_name	String	Phase measurement with blue excitation light from the Aanderaa 4330F
variable	C2RPh		float
attribute	C2RPh	actual_range	float	0.0, 9.07
attribute	C2RPh	long_name	String	Phase measurement with red excitation light from the Aanderaa 4330F
variable	C1Amp		float
attribute	C1Amp	actual_range	float	0.0, 881.2
attribute	C1Amp	long_name	String	Amplitude measurement with blue excitation light from the Aanderaa 4330F
variable	C2Amp		float
attribute	C2Amp	actual_range	float	0.0, 791.8
attribute	C2Amp	long_name	String	Amplitude measurement with red excitation light from the Aanderaa 4330F
variable	Raw_Temp		float
attribute	Raw_Temp	actual_range	float	-180.8, 709.8
attribute	Raw_Temp	long_name	String	Voltage from Aanderaa 4330F thermistor bridge
variable	TSG_T		float
attribute	TSG_T	_FillValue	float	NaN
attribute	TSG_T	actual_range	float	0.0, 22.74
attribute	TSG_T	instrument	String	SBE 45 MicroTSG
attribute	TSG_T	long_name	String	Sea Water Temperature
attribute	TSG_T	standard_name	String	sea_surface_temperature
attribute	TSG_T	units	String	degree_Celsius
variable	TSG_Conductivity		float
attribute	TSG_Conductivity	actual_range	float	0.0, 4.92
attribute	TSG_Conductivity	colorBarMaximum	double	40.0
attribute	TSG_Conductivity	colorBarMinimum	double	30.0
attribute	TSG_Conductivity	instrument	String	SBE 45 MicroTSG
attribute	TSG_Conductivity	long_name	String	Sea Water Electrical Conductivity
attribute	TSG_Conductivity	standard_name	String	sea_water_electrical_conductivity
attribute	TSG_Conductivity	units	String	S/m
variable	TSG_Salinity		float
attribute	TSG_Salinity	_FillValue	float	NaN
attribute	TSG_Salinity	actual_range	float	0.94, 32.33
attribute	TSG_Salinity	colorBarMaximum	double	37.0
attribute	TSG_Salinity	colorBarMinimum	double	32.0
attribute	TSG_Salinity	instrument	String	SBE 45 MicroTSG
attribute	TSG_Salinity	long_name	String	Sea Water Practical Salinity
attribute	TSG_Salinity	standard_name	String	sea_water_practical_salinity
attribute	TSG_Salinity	units	String	PSU
variable	Intake_T		float
attribute	Intake_T	_FillValue	float	NaN
attribute	Intake_T	actual_range	float	0.0, 22.38
attribute	Intake_T	description	String	Surface temperature in degrees Celsius from the SBE 38 Digital Oceanographic Thermometer.
attribute	Intake_T	instrument	String	SBE 38
attribute	Intake_T	long_name	String	Water Intake Temperature
attribute	Intake_T	standard_name	String	sea_surface_temperature
attribute	Intake_T	units	String	degree_Celsius
variable	calibrated_ATM_xCO2_dry		float
attribute	calibrated_ATM_xCO2_dry	_FillValue	float	NaN
attribute	calibrated_ATM_xCO2_dry	actual_range	float	378.79, 449.87
attribute	calibrated_ATM_xCO2_dry	long_name	String	Calibrated Atmospheric CO2 mole Fractions in Dry Air
attribute	calibrated_ATM_xCO2_dry	units	String	ppm
variable	calibrated_SW_xCO2_dry		float
attribute	calibrated_SW_xCO2_dry	_FillValue	float	NaN
attribute	calibrated_SW_xCO2_dry	actual_range	float	29.5, 1206.34
attribute	calibrated_SW_xCO2_dry	long_name	String	Calibrated Seawater CO2 mole Fractions in Dry Air
attribute	calibrated_SW_xCO2_dry	units	String	ppm
variable	ATM_pressure_for_ATM_xCO2		float
attribute	ATM_pressure_for_ATM_xCO2	_FillValue	float	NaN
attribute	ATM_pressure_for_ATM_xCO2	actual_range	float	982.15, 1034.52
attribute	ATM_pressure_for_ATM_xCO2	long_name	String	Atmospheric Pressure adjusted for Water Vapor Pressure and Over/Under-Pressurization in the Vessel and used to Compute Atmospheric pCO2
attribute	ATM_pressure_for_ATM_xCO2	units	String	mbar
variable	equilibrator_pressure		float
attribute	equilibrator_pressure	_FillValue	float	NaN
attribute	equilibrator_pressure	actual_range	float	981.99, 1034.54
attribute	equilibrator_pressure	long_name	String	Pressure of Equilibration Corrected for Vapor Pressure and Over/Under-Pressurization in the Equilibrator and Over/Under-Pressurization in the Vessel and used to compute Seawater pCO2
attribute	equilibrator_pressure	units	String	mbar
variable	ATM_pCO2_wet		float
attribute	ATM_pCO2_wet	_FillValue	float	NaN
attribute	ATM_pCO2_wet	actual_range	float	377.62, 453.6
attribute	ATM_pCO2_wet	long_name	String	Atmospheric partial pressure of carbon dioxide
attribute	ATM_pCO2_wet	standard_name	String	surface_partial_pressure_of_carbon_dioxide_in_air
attribute	ATM_pCO2_wet	units	String	uatm
variable	SW_pCO2_wet_equil_T		float
attribute	SW_pCO2_wet_equil_T	_FillValue	float	NaN
attribute	SW_pCO2_wet_equil_T	actual_range	float	29.5, 1198.73
attribute	SW_pCO2_wet_equil_T	long_name	String	Partial pressure of carbon dioxide in Sea Water at Equilibration Temperature
attribute	SW_pCO2_wet_equil_T	standard_name	String	surface_partial_pressure_of_carbon_dioxide_in_sea_water
attribute	SW_pCO2_wet_equil_T	units	String	uatm
variable	SW_pCO2_wet_SST		float
attribute	SW_pCO2_wet_SST	_FillValue	float	NaN
attribute	SW_pCO2_wet_SST	actual_range	float	29.32, 1187.1
attribute	SW_pCO2_wet_SST	long_name	String	Surface Partial Pressure of Carbon Dioxide in Sea Water at Sea Surface Temperature
attribute	SW_pCO2_wet_SST	standard_name	String	surface_partial_pressure_of_carbon_dioxide_in_sea_water
attribute	SW_pCO2_wet_SST	units	String	uatm
variable	O2		float
attribute	O2	_FillValue	float	NaN
attribute	O2	actual_range	float	139.72, 929.05
attribute	O2	description	String	Salinity and density corrected dissolved oxygen in micro-mole per kilogram from the Aanderaa 4330F. Density was calculated using temperature and salinity from the SBE 45 MicroTSG Thermosalinograph.
attribute	O2	long_name	String	Dissolved Oxygen Molaire Concentration per kg
attribute	O2	standard_name	String	moles_of_oxygen_per_unit_mass_in_sea_water
attribute	O2	units	String	umol/kg
variable	O2sol		float
attribute	O2sol	_FillValue	float	NaN
attribute	O2sol	actual_range	float	209.01, 376.08
attribute	O2sol	description	String	Dissolved oxygen solubility in micro-mole per kilogram calculated using seawater temperature and salinity from the SBE 45 MicroTSG Thermosalinograph with the relationship (equation 8, combined fit) from Garcia and Gordon, 1992.
attribute	O2sol	long_name	String	Dissolved Oxygen Molaire Concentration per kg at Saturation
attribute	O2sol	units	String	umol/kg
variable	delta_O2		float
attribute	delta_O2	_FillValue	float	NaN
attribute	delta_O2	actual_range	float	-149.21, 624.77
attribute	delta_O2	long_name	String	Dissolved Oxygen Molaire Concentration Difference to Solubility
attribute	delta_O2	units	String	umol/kg
variable	ATM_fCO2_wet		float
attribute	ATM_fCO2_wet	_FillValue	float	NaN
attribute	ATM_fCO2_wet	actual_range	float	376.25, 451.88
attribute	ATM_fCO2_wet	long_name	String	Atmospheric CO2 Fugacity in Wet Air
attribute	ATM_fCO2_wet	units	String	uatm
variable	SW_fCO2_wet		float
attribute	SW_fCO2_wet	_FillValue	float	NaN
attribute	SW_fCO2_wet	actual_range	float	29.21, 1182.53
attribute	SW_fCO2_wet	long_name	String	Seawater CO2 Fugacity in Wet Air
attribute	SW_fCO2_wet	standard_name	String	fugacity_of_carbon_dioxide_in_sea_water
attribute	SW_fCO2_wet	units	String	uatm

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.