Dataset: CTD - Profiles - AN10

Name: CTD Profile Data from R/V Knorr KN197-08 in the Amazon River plume, NE coast of South America from May to June 2010 (ANACONDAS project)
Published: 2010-10-14
License: https://creativecommons.org/licenses/by/4.0/
Keywords: oceans

Cite This Dataset

Project:

Amazon iNfluence on the Atlantic: CarbOn export from Nitrogen fixation by DiAtom Symbioses (ANACONDAS)

Principal Investigator:

Victoria Coles (University of Maryland Center for Environmental Science, UMCES/HPL)

Contact:

Victoria Coles (University of Maryland Center for Environmental Science, UMCES/HPL)

BCO-DMO Data Manager:

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

Version Date:

2010-10-14

Validated:

Current State:

Preliminary and in progress

Data URL:

https://www.bco-dmo.org/dataset/3374/data

CTD Profile Data from R/V Knorr KN197-08 in the Amazon River plume, NE coast of South America from May to June 2010 (ANACONDAS project)

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Description

CTD profile data

Acquisition Description

SBE9+ s/n 785 Pressure calibration 08 Aug 2008
Channel 1:
SBE4c s/n 04 3089 Conductivity calibration 16 Mar 2010
SBE3T s/n 03P 4502 Temperature calibration 24 Mar 2010
SBE43 s/n 43 1642 Dissolved Oxygen calibration 12 June 2009

Channel 2:
SBE4c s/n 04 3042 Conductivity calibration 24 Mar 2010
SBE3T s/n 03P 4507 Temperature calibration 12 Mar 2010

Transmissometer WetLabs Model CSTar s/n CST - 1117DR Calibrated 30 April 2008

Fluorometer WetLabs Model FLNTU s/n FLNTURD-304 Calibrated 10 March 2008

Surface PAR Biospherical Instruments QSR-240 s/n 6294 Calibrated 13 March 2008

Aquatic PAR Biospherical Instruments s/n QSP-200L4 s/n 4550 Calibrated 13 March 2008

Channel 2 is used for most profiles as there were problems with the pump for channel 1
on some stations. Oxygen is taken from channel 1, however there are some bad values
which are not yet flagged.

Sample header file:
* Sea-Bird SBE 9 Data File:
* FileName = C:Datactd19708001.hdr
* Software Version Seasave V 7.18d
* Temperature SN = 4502
* Conductivity SN = 3089
* Number of Bytes Per Scan = 40
* Number of Voltage Words = 5
* Number of Scans Averaged by the Deck Unit = 1
* System UpLoad Time = May 23 2010 08:09:54
* NMEA Latitude = 11 33.61 N
* NMEA Longitude = 056 47.89 W
* NMEA UTC (Time) = May 23 2010 08:09:51
* Store Lat/Lon Data = Append to Every Scan
** Ship: R/V Knorr
** Station: 001
** Operator: Victoria
** station 001 cast 01 event 01.03
# nquan = 23
# nvalues = 1994
# units = specified
# name 0 = prDM: Pressure, Digiquartz [db]
# name 1 = depSM: Depth [salt water, m]
# name 2 = t190C: Temperature, 2 [ITS-90, deg C]
# name 3 = c1S/m: Conductivity, 2 [S/m]
# name 4 = sbeox0V: Oxygen Voltage, SBE 43
# name 5 = xmiss: Beam Transmission, Chelsea/Seatech/Wetlab CStar [%]
# name 6 = bat: Beam Attenuation, Chelsea/Seatech/Wetlab CStar [1/m]
# name 7 = flECO-AFL: Fluorescence, Wetlab ECO-AFL/FL [mg/m^3]
# name 8 = upoly0: Upoly 0, FLNTU turbidity
# name 9 = spar: SPAR/Surface Irradiance
# name 10 = par: PAR/Irradiance, Biospherical/Licor
# name 11 = cpar: CPAR/Corrected Irradiance [%]
# name 12 = t090C: Temperature [ITS-90, deg C]
# name 13 = c0S/m: Conductivity [S/m]
# name 14 = depSM: Depth [salt water, m], lat = 11.5602
# name 15 = density11: Density, 2 [density, Kg/m^3]
# name 16 = sigma-t11: Density, 2 [sigma-t, Kg/m^3 ]
# name 17 = potemp190C: Potential Temperature, 2 [ITS-90, deg C]
# name 18 = sal11: Salinity, Practical, 2 [PSU]
# name 19 = svWM: Sound Velocity [Wilson, m/s]
# name 20 = sbeox0Mm/Kg: Oxygen, SBE 43 [umol/Kg], WS = 2
# name 21 = sbeox0PS: Oxygen, SBE 43 [% saturation], WS = 2
# name 22 = flag: flag
# span 0 = 5.029, 2019.162
# span 1 = 4.978, 1997.855
# span 2 = 3.4786, 28.9724
# span 3 = 3.293110, 5.786188
# span 4 = 1.2362, 2.4303
# span 5 = 93.5592, 97.7670
# span 6 = 0.0903, 0.2663
# span 7 = -0.0113, 0.4303
# span 8 = 1.0607965, 1.3869948
# span 9 = 1.5656e+01, 1.7824e+01
# span 10 = 1.0000e-12, 1.0000e-12
# span 11 = 5.6114e-12, 6.3893e-12
# span 12 = 3.4787, 28.9723
# span 13 = 3.293104, 5.786650
# span 14 = 5.000, 1998.000
# span 15 = 1020.0771, 1037.0397
# span 16 = 20.0517, 27.8118
# span 17 = 3.3170, 28.9661
# span 18 = 32.1813, 37.0067
# span 19 = 1486.29, 1544.67
# span 20 = 112.419, 249.669
# span 21 = 38.99671, 96.04706
# span 22 = 0.0000e+00, 0.0000e+00
# interval = meters: 1
# start_time = May 23 2010 08:09:51
# bad_flag = -9.990e-29
# datcnv_date = Jun 23 2010 19:27:22, 7.20c
# datcnv_in = Z:Data aw19708001.hex Z:Data aw19708001.CON
# datcnv_skipover = 0
# datcnv_ox_hysteresis_correction = yes
# filter_date = Jun 23 2010 19:27:59, 7.20c
# filter_in = Z:Datavicprocess19708001.cnv
# filter_low_pass_tc_A = 0.500
# filter_low_pass_tc_B = 0.150
# filter_low_pass_A_vars = depSM t190C c1S/m sbeox0V xmiss bat flECO-AFL upoly0 spar cpar t090C c0S/m
# filter_low_pass_B_vars = prDM
# alignctd_date = Jun 23 2010 19:28:04, 7.20c
# alignctd_in = Z:Datavicprocess19708001.cnv
# alignctd_adv = c1S/m 0.073, sbeox0V 2.000
# celltm_date = Jun 23 2010 19:28:09, 7.20c
# celltm_in = Z:Datavicprocess19708001.cnv
# celltm_alpha = 0.0000, 0.0300
# celltm_tau = 0.0000, 7.0000
# celltm_temp_sensor_use_for_cond = , secondary
# loopedit_date = Jun 23 2010 19:28:14, 7.20c
# loopedit_in = Z:Datavicprocess19708001.cnv
# loopedit_minVelocity = 0.250
# loopedit_surfaceSoak: minDepth = 5.0, maxDepth = 20, useDeckPress = 1
# loopedit_excl_bad_scans = yes
# wildedit_date = Jun 23 2010 19:28:19, 7.20c
# wildedit_in = Z:Datavicprocess19708001.cnv
# wildedit_pass1_nstd = 2.0
# wildedit_pass2_nstd = 20.0
# wildedit_pass2_mindelta = 0.000e+000
# wildedit_npoint = 100
# wildedit_vars = prDM depSM t190C c1S/m xmiss bat flECO-AFL upoly0 spar par cpar t090C c0S/m
# wildedit_excl_bad_scans = yes
# wfilter_date = Jun 23 2010 19:28:23, 7.20c
# wfilter_in = Z:Datavicprocess19708001.cnv
# wfilter_excl_bad_scans = yes
# wfilter_action xmiss = gaussian, 200, 100, 0
# wfilter_action bat = gaussian, 200, 100, 0
# wfilter_action flECO-AFL = gaussian, 200, 100, 0
# Derive_date = Jun 23 2010 19:28:31, 7.20c
# Derive_in = Z:Datavicprocess19708001.cnv Z:Data aw19708001.con
# derive_time_window_docdt = seconds: 2
# derive_ox_tau_correction = yes
# binavg_date = Jun 23 2010 19:28:45, 7.20c
# binavg_in = Z:Datavicprocess19708001.cnv
# binavg_bintype = meters
# binavg_binsize = 1
# binavg_excl_bad_scans = no
# binavg_skipover = 0
# binavg_surface_bin = yes, min = 0.000, max = 0.000, value = 0.000
# file_type = ascii
*END*

Processing Description

The data have not yet been processed to include hand salinity and oxygen samples.

BCO-DMO Processing Notes
- Awk written to reformat original .cnv files contributed by Victoria Coles
- AWK: ANACONDAS_CTDcnv_2_bcodmo.awk
- Header data for CTD data generated from .avg.btl.csv files
- space delimited reformatted to tab delimited
- all records with "#" or "*" ignored
- blank lines ignored
- BCO-DMO header o/p from routine
- Parameter names same as Bottle Data wherever possible

More Information about this dataset

Funding Sources

Funding Source	Award Number
Gordon and Betty Moore Foundation	MMI-2293
NSF Division of Ocean Sciences	OCE-0934095

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KN197-08	AN10 ANACONDAS ROCA	2010-05-22	R/V Knorr	Patricia L. Yager (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

(more info)

Short Name: CTD SBE 911plus

Community Standard Description

Generic Description

The Sea-Bird SBE 911plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9plus and SBE 11plus is called a SBE 911plus. The SBE 9plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3plus and SBE 4). The SBE 9plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

PI supplied instrument name: CTD Sea-Bird SBE 911plus

Dataset-specific description

Fluorometer

(more info)

Short Name: Fluorometer

Community Standard Description

Generic Description

A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

PI supplied instrument name: Fluorometer

Dataset-specific description

Photosynthetically Available Radiation Sensor

(more info)

Short Name: PAR sensor

Community Standard Description

Generic Description

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

PI supplied instrument name: Photosynthetically Available Radiation Sensor

Dataset-specific description

Wet Labs CSTAR Transmissometer

(more info)

Short Name: WL CSTAR Trans

Community Standard Description

Generic Description

A highly integrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The instrument is capable of either free space measurements, or through the use of an optical flow tube, flow-through sampling with a pump. It can be used in profiling, moored, or underway applications. more information from Wet Labs

PI supplied instrument name: Wet Labs CSTAR Transmissometer

Dataset-specific description

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
CTD_DataSet	CTD profile data dataset id (19708001)	text	dataset_id
CTD	unique CTD number	integer	sta_id
Station	Station number	integer	station
Cast	CTD cast at the same station	integer	cast
Event	Event number = station.event.number at station	xx.xx	event
date_gmt	Station date (GMT)	YYYYMMDD	date_gmt
time_gmt	Station time (GMT)	HHMMSS	time_gmt
lon	Station longitude (West is negative)	decimal degrees	lon
lat	Station latitude (South is negative)	decimal degrees	lat
Press	Pressure	decibars	press
Depth	Depth of instrument	meters	depth
Temp2	Temperature from sensor 2	degrees Celsius	temp
Cond2	Conductivity from sensor 2	Siemens/meter	cond
O2_v	Oxygen in volts	volts	O2
BeamTrans	Beam Transmission	percentage	trans
BeamAtten	Beam Attenuation	m-1	beam_cp
Fluorescence	Fluorescence	mgm-3	fluor
Turbidity	Turbidity	Nephelometric Turbidity Units (NTU)	turbidity
Spar	photosynthetically active radiation (S PAR)	uEm-2sec-1	SPAR
PAR	photosynthetically active radiation (PAR)	uEm-2sec-1	PAR
Cpar	photosynthetically active radiation (C PAR)	uEm-2sec-1	par_cosine
Temp1	Temperature from sensor 1	degrees Celsius	temp
Cond1	Conductivity from sensor 1	Siemens/meter	cond
Depth_Lat	Latitude corrected depth of instrument lat - 11.2883	meters	depth_lat
Density	Density	kgm-2	density
Sigma_theta	Sigma theta	kgm-2	sigma_theta
Pot_Temp	Potential Temperature	degrees Celsius	potemp
Salinity	Salinity	practical salinity units (PSU)	sal
Sound_Velocity	Sound Velocity	m/sec	sound_vel
O2	Oxygen	umolkg-1	O2
O2_PS	Oxygen Percent Saturation (percentage)	percentage	O2sat
Flag	Data Flag (always 0 in these data)	integer	flag

Database

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Dataset: CTD - Profiles - AN10