Dataset: CTD - Profiles

Name: CTD profile data from R/V Thomas G. Thompson cruise TN210 in the Gulf of Alaska, North Pacific in 2007 (Northern Gulf of Alaska Phytoplankton project)
Published: 2012-02-01
Keywords: oceans

Cite This Dataset

Spatial Extent: N:60.758167 E:-134.056333 S:53.667333 W:-158.0035

Project:

Influence of continental margin iron on phytoplankton species composition and production in the northern Gulf of Alaska (Northern Gulf of Alaska Phytoplankton)

Principal Investigator:

Raphael M. Kudela (University of California-Santa Cruz, UCSC)

Co-Principal Investigator:

Christopher Edwards (University of California-Santa Cruz, UCSC)

Contact:

Raphael M. Kudela (University of California-Santa Cruz, UCSC)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

01 February 2012

Version Date:

2012-02-01

Validated:

Current State:

Final no updates expected

CTD profile data from R/V Thomas G. Thompson cruise TN210 in the Gulf of Alaska, North Pacific in 2007 (Northern Gulf of Alaska Phytoplankton project)

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Description

CTD profile data

Methods & Sampling

Sea-Bird SBE 9 Data File:
FileName = G:Data21000101.hex
Software Version Seasave V 7.0h
Temperature SN = 2131
Conductivity SN = 2881
Number of Bytes Per Scan = 41
Number of Voltage Words = 4
Number of Scans Averaged by the Deck Unit = 1
Append System Time to Every Scan
System UpLoad Time = Aug 18 2007 01:25:56
NMEA Latitude = 54 35.96 N
NMEA Longitude = 134 03.38 W
NMEA UTC (Time) = Aug 18 2007 01:25:53
Store Lat/Lon Data = Append to Every Scan
Ship: Thomas G. Thompson
Cruise name: NRL #4
Cruise number: TN208
nquan = 25
nvalues = 200
units = specified
name 0 = prDM: Pressure, Digiquartz [db]
name 1 = depSM: Depth [salt water, m]
name 2 = t090C: Temperature [ITS-90, deg C]
name 3 = t190C: Temperature, 2 [ITS-90, deg C]
name 4 = c0mS/cm: Conductivity [mS/cm]
name 5 = c1mS/cm: Conductivity, 2 [mS/cm]
name 6 = altM: Altimeter [m]
name 7 = latitude: Latitude [deg]
name 8 = longitude: Longitude [deg]
name 9 = timeS: Time, Elapsed [seconds]
name 10 = timeY: Time, System [seconds]
name 11 = flECO-AFL: Fluorescence, Wetlab ECO-AFL/FL [mg/m^3]
name 12 = par: PAR/Irradiance, Biospherical/Licor
name 13 = sbeox0ML/L: Oxygen, SBE 43 [ml/l]
name 14 = xmiss: Beam Transmission, Chelsea/Seatech/Wetlab CStar [%]
name 15 = sigma-é00: Density [sigma-theta, Kg/m^3]
name 16 = sigma-t00: Density [sigma-t, Kg/m^3 ]
name 17 = sigma-é11: Density, 2 [sigma-theta, Kg/m^3]
name 18 = sigma-t11: Density, 2 [sigma-t, Kg/m^3 ]
name 19 = potemp090C: Potential Temperature [ITS-90, deg C]
name 20 = potemp190C: Potential Temperature, 2 [ITS-90, deg C]
name 21 = sal00: Salinity [PSU]
name 22 = sal11: Salinity, 2 [PSU]
name 23 = svCM: Sound Velocity [Chen-Millero, m/s]
name 24 = flag: flag
span 0 =      2.000,    103.000
span 1 =      1.980,    102.049
span 2 =     6.3851,    15.1536
span 3 =     6.3859,    15.6442
span 4 = 33.069511, 37.810101
span 5 = 33.071484, 38.161823
span 6 =       0.94,     124.52
span 7 =   54.59930,   54.59938
span 8 = -134.05646, -134.05640
span 9 =     81.537,    854.430
span 10 = 1187400437, 1187401210
span 11 =    -0.0742,     6.2105
span 12 = 7.3999e+00, 9.3234e+01
span 13 =    3.72266,    7.10852
span 14 =    77.4994,    97.1311
span 15 =    22.2944,    26.0131
span 16 =    22.2943,    26.0120
span 17 =    22.1385,    26.0138
span 18 =    22.1384,    26.0127
span 19 =     6.3763,    15.1533
span 20 =     6.3772,    15.6439
span 21 =    30.2677,    33.1114
span 22 =    30.2021,    33.1124
span 23 =    1475.56,    1501.69
span 24 = 0.0000e+00, 0.0000e+00
interval = decibars: 1
start_time = Aug 18 2007 01:25:56
bad_flag = -9.990e-29
sensor 0 = Frequency 0 temperature, primary, 2131, 23-jan-07
sensor 1 = Frequency 1 conductivity, primary, 2881, 17-jan-07, cpcor = -9.5700e-08
sensor 2 = Frequency 2 pressure, 34901, 01-Feb-2007
sensor 3 = Frequency 3 temperature, secondary, 1703, 23-jan-07
sensor 4 = Frequency 4 conductivity, secondary, 0855, 17-jan-07, cpcor = -9.5700e-08
sensor 5 = Extrnl Volt 2 WET Labs, ECO_AFL
sensor 6 = Extrnl Volt 3 transmissometer, primary, CST-401DR, 09-feb-2007
sensor 7 = Extrnl Volt 4 Oxygen, SBE, primary, 0023, 12 oct 2006
sensor 8 = Extrnl Volt 5 altimeter
sensor 9 = Extrnl Volt 6 irradiance (PAR), primary, 4747, 10-July-2006
datcnv_date = Aug 18 2007 03:36:31, 5.37e
datcnv_in = g:data21000101.hex g:data21000101.CON
datcnv_skipover = 0
wildedit_date = Aug 18 2007 03:36:32, 5.37e
wildedit_in = g:data21000101.cnv
wildedit_pass1_nstd = 2.0
wildedit_pass2_nstd = 20.0
wildedit_pass2_mindelta = 0.000e+000
wildedit_npoint = 100
wildedit_vars = prDM depSM t090C t190C c0mS/cm c1mS/cm flECO-AFL par sbeox0ML/L xmiss
wildedit_excl_bad_scans = yes
celltm_date = Aug 18 2007 03:36:33, 5.37e
celltm_in = g:data21000101.cnv
celltm_alpha = 0.0300, 0.0300
celltm_tau = 7.0000, 7.0000
celltm_temp_sensor_use_for_cond = primary, secondary
filter_date = Aug 18 2007 03:36:33, 5.37e
filter_in = g:data21000101.cnv
filter_low_pass_tc_A = 0.030
filter_low_pass_tc_B = 0.150
filter_low_pass_A_vars = prDM
filter_low_pass_B_vars = c0mS/cm c1mS/cm
loopedit_date = Aug 18 2007 03:36:34, 5.37e
loopedit_in = g:data21000101.cnv
loopedit_minVelocity = 0.000
loopedit_surfaceSoak: minDepth = 5.0, maxDepth = 20, useDeckPress = 1
loopedit_excl_bad_scans = yes
binavg_date = Aug 18 2007 03:36:34, 5.37e
binavg_in = g:data21000101.cnv
binavg_bintype = decibars
binavg_binsize = 1
binavg_excl_bad_scans = yes
binavg_skipover = 0
binavg_surface_bin = no, min = 0.000, max = 0.000, value = 0.000
Derive_date = Aug 18 2007 03:36:34, 5.37e
Derive_in = g:data21000101.cnv g:data21000101.CON
file_type = ascii

Data Processing Description

CTD cast data processed using standard (NODC) methods.
See (.pdf): Rovegno, PS, CA Edwards, and KW Bruland, 2009, Observations of a Kenai eddy and Sitka eddy in the Northern Gulf of Alaska. J. Geophys. Res. 114: C11012.

BCO-DMO Processing Notes
- Awk written to reformat original .cnv files contributed by Ralph Kudela
- AWK: TN210_CTDcnv_2_bcodmo.awk
- space delimited reformatted to tab delimited
- all records with "#" or "*" ignored
- blank lines ignored
- BCO-DMO header o/p from routine

Data Files

File
TN210_CTD.csv (Comma Separated Values (.csv), 28.93 MB) MD5:44869712ebd44c4de42f660ed7201c10 Primary data file for dataset ID 3619

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0726858

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
TN210		2007-08-15	R/V Thomas G. Thompson	Kenneth W. Bruland (Chief Scientist)	data info

Instruments

CTD Sea-Bird 9

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird 9

Acronym: CTD SBE 9

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

The Sea-Bird SBE 9 is a type of CTD instrument package. The SBE 9 is the Underwater Unit and is most often combined with the SBE 11 Deck Unit (for real-time readout using conductive wire) when deployed from a research vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorometer, altimeter, etc.). Note that in most cases, it is more accurate to specify SBE 911 than SBE 9 since it is likely a SBE 11 deck unit was used. more information from Sea-Bird Electronics

LI-COR Biospherical PAR Sensor

Supplied Description:

LI-COR Biospherical PAR Sensor

Instrument Type

Generic Name: LI-COR Biospherical PAR Sensor

Acronym: LI-COR Biospherical PAR

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/

Generic Description:

The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE 43 Dissolved Oxygen Sensor

Supplied Description:

SBE 43 Dissolved Oxygen Sensor

Instrument Type

Generic Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor

Acronym: SBE-43 DO

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/

Generic Description:

The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics

Wet Labs ECO-AFL/FL Fluorometer

Supplied Description:

Wet Labs ECO-AFL/FL Fluorometer

Instrument Type

Generic Name: Wet Labs ECO-AFL/FL Fluorometer

Acronym: ECO AFL/FL

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0172/

Generic Description:

The Environmental Characterization Optics (ECO) series of single channel fluorometers delivers both high resolution and wide ranges across the entire line of parameters using 14 bit digital processing. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements.
more information from Wet Labs

WET Labs {Sea-Bird WETLabs} C-Star transmissometer

Supplied Name: Wet Labs CSTAR Transmissometer

Supplied Description:

Wet Labs CSTAR Transmissometer

Instrument Type

Generic Name: WET Labs {Sea-Bird WETLabs} C-Star transmissometer

Acronym: WL CSTAR Trans

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0160/

Generic Description:

The C-Star transmissometer has a novel monolithic housing with a highly intgrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The C-Star is capable of free space measurements or flow-through sampling when used with a pump and optical flow tubes. The sensor can be used in profiling, moored, or underway applications. Available with a 6000 m depth rating.

More information on Sea-Bird website: https://www.seabird.com/c-star-transmissometer/product?id=60762467717

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
CTD_DataSet_Id	CTD Dataset Id	text	dataset_id
date	Station date	YYYYMMDD	date
time	Station time	HHMMSS	time
lat	Station latitude (South is negative)	decimal degrees	lat
lon	Station longitude (West is negative)	decimal degrees	lon
prDM	Pressure Digiquartz	db	press
depSM	Depth salt water	m	depth
t0	Temperature ITS-90	deg C	temp
t1	Temperature 2 ITS-90	deg C	temp
c0	Conductivity	mS/cm	cond
c1	Conductivity 2	mS/cm	cond
altM	Altimeter	m	altitude
latitude	Latitude (South is negative)	deg	lat
longitude	Longitude (West is negative)	deg	lon
timeS	Time Elapsed	seconds	time_elapsed
timeY	Time System	seconds	time_elapsed
fluor	Fluorescence Wetlab ECO-AFL/FL	mg/m^3	fluor
par	PAR/Irradiance Biospherical/Licor	(tbd)	PAR
sbeox0	Oxygen SBE 43	ml/l	O2
xmiss	Beam Transmission Chelsea/Seatech/Wetlab CStar	percentage	trans
sigma_e00	Density sigma-theta	Kg/m^3	sigma_theta
sigma_t00	Density sigma-t	Kg/m^3	sigma_t
sigma_e11	Density 2 sigma-theta	Kg/m^3	sigma_theta
sigma_t11	Density 2 sigma-t	Kg/m^3	sigma_t
potemp0	Potential Temperature ITS-90	deg C	potemp
potemp1	Potential Temperature 2 ITS-90	deg C	potemp
sal00	Salinity	PSU	sal
sal11	Salinity 2	PSU	sal
svCM	Sound Velocity Chen-Millero	m/s	sound_vel
flag	flag	(na)	flag
station	Station number from .cnv filename	integer	station
cast	Cast number from .cnv filename	integer	cast

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Dataset: CTD - Profiles