Dataset: CTD - Profiles - OC449-03

Name: CTD profiles for OC449-03 from R/V Oceanus cruise OC449-03 in the Coastal transect between Cape Verde and Mauritanian coast from 2008 to 2008 (SIRENA project)
Published: 2011-05-18
Keywords: oceans

Cite This Dataset

Spatial Extent: N:19.9325 E:-17.51433 S:17.38517 W:-24.52667

Project:

Sources of Iron to the EasterN tropical Atlantic (SIRENA)

Program:

Ocean Carbon and Biogeochemistry (OCB)

Principal Investigator:

Phoebe J. Lam (Woods Hole Oceanographic Institution, WHOI)

Contact:

Phoebe J. Lam (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

BCO-DMO Data Manager:

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

Version:

18 May 2011

Version Date:

2011-05-18

Validated:

Current State:

Preliminary and in progress

Data URL:

https://www.bco-dmo.org/dataset/3469/data

CTD profiles for OC449-03 from R/V Oceanus cruise OC449-03 in the Coastal transect between Cape Verde and Mauritanian coast from 2008 to 2008 (SIRENA project)

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Description

CTD profile data for OC449-03 Up/Down Casts

PI's Note/09May2011:

In comparing my pump seacat CTD to the ship's CTD, I've discovered that the ship's CTD's fluorescence and beam attenuation are no good, at least for OC449-3. The ship's fluorometer was clearly just not working. The ship's transmissometer misbehaved in a more subtle manner--oceanographically consistent, but of a different pattern than my pump seacat data. I concluded that my pump seacat CTD's transmissometer is the "correct" one by comparing to discrete particulate carbon measurements on particles collected on my pumps. Both particulate carbon concentrations and beam attenuation from my pump seacat CTD show a minimum at 500m at OC449-3 station 3, whereas the ship's CTD shows an anomalous minimum in subsurface beam attenuation at station 2, which is not seem in the particulate carbon concentrations.

Acquisition Description

* Sea-Bird SBE 9 Data File:
* FileName = C:dataoc449-03_001.hdr
* Software Version Seasave V 7.14c
* Temperature SN = 2265
* Conductivity SN = 2304
* Number of Bytes Per Scan = 40
* Number of Voltage Words = 5
* Number of Scans Averaged by the Deck Unit = 1
* System UpLoad Time = Sep 08 2008 20:13:41
* NMEA Latitude = 17 23.63 N
* NMEA Longitude = 024 30.16 W
* NMEA UTC (Time) = Sep 08 2008 20:13:39
* Store Lat/Lon Data = Append to Every Scan
# nquan = 28
# nvalues = 1410
# units = specified
# name 0 = timeS: Time, Elapsed [seconds]
# name 1 = prDM: Pressure, Digiquartz [db]
# name 2 = depSM: Depth [salt water, m]
# name 3 = t090C: Temperature [ITS-90, deg C]
# name 4 = t190C: Temperature, 2 [ITS-90, deg C]
# name 5 = sal00: Salinity [PSU]
# name 6 = sal11: Salinity, 2 [PSU]
# name 7 = c0S/m: Conductivity [S/m]
# name 8 = c1S/m: Conductivity, 2 [S/m]
# name 9 = sbeox0V: Oxygen Voltage, SBE 43
# name 10 = sbeox0ML/L: Oxygen, SBE 43 [ml/l]
# name 11 = xmiss: Beam Transmission, Chelsea/Seatech/Wetlab CStar [%]
# name 12 = density00: Density [density, Kg/m^3]
# name 13 = potemp090C: Potential Temperature [ITS-90, deg C]
# name 14 = flECO-AFL: Fluorescence, Wetlab ECO-AFL/FL [mg/m^3]
# name 15 = upoly0: Upoly 0, WetLabs Turbidity
# name 16 = altM: Altimeter [m]
# name 17 = density00: Density [density, Kg/m^3]
# name 18 = n2satML/L: Nitrogen Saturation [ml/l]
# name 19 = oxsatML/L: Oxygen Saturation [ml/l]
# name 20 = sbeox0ML/L: Oxygen, SBE 43 [ml/l], WS = 2
# name 21 = potemp090C: Potential Temperature [ITS-90, deg C]
# name 22 = pta090C: Potential Temperature Anomaly [ITS-90, deg C], a0 = 0, a1 = 0, salinity
# name 23 = sal00: Salinity [PSU]
# name 24 = specc: Specific Conductance [uS/cm]
# name 25 = sva: Specific Volume Anomaly [10^-8 * m^3/Kg]
# name 26 = tsa: Thermosteric Anomaly [10^-8 * m^3/Kg]
# name 27 = flag: flag
# span 0 =     23.405,   2569.116
# span 1 =      2.000,    707.000
# span 2 =      1.985,    701.589
# span 3 =     7.7612,    27.6712
# span 4 =     7.7608,    27.6938
# span 5 =    34.9570,    36.6071
# span 6 =    34.9590,    36.6155
# span 7 =   3.626457,   5.771784
# span 8 =   3.626659,   5.774208
# span 9 =     1.0208,     3.0432
# span 10 =    1.35904,    5.02562
# span 11 =    95.7500,    98.8836
# span 12 = 1023.4971, 1030.4829
# span 13 =     7.6887,    27.6701
# span 14 =     0.0041,     1.1170
# span 15 = 0.0293903, 0.0768421
# span 16 =      43.04,     101.61
# span 17 = 1023.4971, 1030.4829
# span 18 =    8.37490,   11.93137
# span 19 =    4.48666,    6.64550
# span 20 =    1.36085,    5.00431
# span 21 =     7.6887,    27.6703
# span 22 =     7.6887,    27.6703
# span 23 =    34.9562,    36.6008
# span 24 = 54744.414, 55468.490
# span 25 =     90.827,    439.837
# span 26 =     78.871,    439.874
# span 27 = 0.0000e+00, 0.0000e+00
# interval = decibars: 1
# start_time = Sep 08 2008 20:13:41
# bad_flag = -9.990e-29
# sensor 0 = Frequency 0 temperature, primary, 2265, 2007-10-24
# sensor 1 = Frequency 1 conductivity, primary, 2304, 2007-10-25, cpcor = -9.5700e-08
# sensor 2 = Frequency 2 pressure, 69685, 12/18/2002
# sensor 3 = Frequency 3 temperature, secondary, 2271, 2007-10-24
# sensor 4 = Frequency 4 conductivity, secondary, 2645, 2007-10-25, cpcor = -9.5700e-08
# sensor 5 = Extrnl Volt 0 WET Labs, ECO_AFL
# sensor 6 = Extrnl Volt 1 userpoly 0, FLNTURTD-1012, 2008-04-18
# sensor 7 = Extrnl Volt 3 transmissometer, primary, CST-1117DR, 2008-04-30
# sensor 8 = Extrnl Volt 4 altimeter
# sensor 9 = Extrnl Volt 5 Oxygen, SBE, primary, 794, 2008-09-01
# sensor 10 = Extrnl Volt 9 surface irradiance (SPAR), degrees = 0.0
# datcnv_date = Sep 08 2008 22:58:19, 7.15
# datcnv_in = c:ctd_processingoc449-03_001.hex c:ctd_processingoc449-03_001.con
# datcnv_skipover = 0
# wildedit_date = Sep 08 2008 22:58:26, 7.15
# wildedit_in = c:ctd_processingoc449-03_001.cnv
# wildedit_pass1_nstd = 2.0
# wildedit_pass2_nstd = 20.0
# wildedit_pass2_mindelta = 1.000e+000
# wildedit_npoint = 100
# wildedit_vars = prDM depSM t090C t190C sal00 sal11 c0S/m c1S/m sbeox0V sbeox0ML/L xmiss density00 potemp090C flECO-AFL upoly0 altM
# wildedit_excl_bad_scans = yes
# filter_date = Sep 08 2008 22:58:34, 7.15
# filter_in = c:ctd_processingoc449-03_001.cnv
# filter_low_pass_tc_A = 0.030
# filter_low_pass_tc_B = 0.100
# filter_low_pass_A_vars = depSM sal00 sal11 c0S/m c1S/m sbeox0V sbeox0ML/L xmiss density00 potemp090C flECO-AFL upoly0
# filter_low_pass_B_vars = prDM
# alignctd_date = Sep 08 2008 22:58:51, 7.15
# alignctd_in = c:ctd_processingoc449-03_001.cnv
# alignctd_adv = sbeox0V 4.000, sbeox0ML/L 4.000
# celltm_date = Sep 08 2008 22:59:00, 7.15
# celltm_in = c:ctd_processingoc449-03_001.cnv
# celltm_alpha = 0.0300, 0.0300
# celltm_tau = 7.0000, 7.0000
# celltm_temp_sensor_use_for_cond = primary, secondary
# loopedit_date = Sep 08 2008 22:59:08, 7.15
# loopedit_in = c:ctd_processingoc449-03_001.cnv
# loopedit_minVelocity = 0.100
# loopedit_surfaceSoak: do not remove
# loopedit_excl_bad_scans = yes
# Derive_date = Sep 08 2008 22:59:20, 7.15
# Derive_in = c:ctd_processingoc449-03_001.cnv c:ctd_processingoc449-03_001.con
# derive_time_window_docdt = seconds: 2
# binavg_date = Sep 08 2008 22:59:32, 7.15
# binavg_in = c:ctd_processingoc449-03_001.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
# file_type = ascii
*END*

Processing Description

BCO-DMO Processing Notes
- Awk written to reformat original .cnv files contributed by Phoebe Lam
- AWK: OC449-03_CTDcnv_2_BCODMO.awk

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0726367

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
OC449-03	SIRENA	2008-09-08	R/V Oceanus	Phoebe J. Lam (Chief Scientist) Aron Stubbins (Co-Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus 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 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus 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

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
timeS	Time Elapsed	seconds	time_elapsed
prDM	Pressure Digiquartz	decibars	press
depSM	Depth salt water	meters	depth
t090C	Temperature ITS-90	deg C	temp
t190C	Temperature 2 ITS-90	deg C	temp
sal00	Salinity	PSU	sal
sal11	Salinity 2	PSU	sal
c0S_m	Conductivity	S/m	cond
c1S_m	Conductivity 2	S/m	cond
sbeox0V	Oxygen Voltage SBE 43	volts	O2_v
sbeox0ML_L	Oxygen SBE 43	ml/l	O2
xmiss	Beam Transmission Chelsea/Seatech/Wetlab CStar	percentage	beam_cp
density00	Density	Kg/m^3	density
potemp090C	Potential Temperature ITS-90	deg C	potemp
flECO_AFL	Fluorescence Wetlab ECO-AFL/FL	mg/m^3	fluor
upoly0	Upoly 0 WetLabs Turbidity	tbd	turbidity
altM	Altimeter	meters	altitude
density01	Density	Kg/m^3	density
n2satML_L	Nitrogen Saturation	ml/l	unknown
oxsatML_L	Oxygen Saturation	ml/l	O2sat
sbeox1ML_L	Oxygen SBE 43 WS 2	ml/l	O2
potemp190C	Potential Temperature ITS-90	deg C	potemp
pta090C	Potential Temperature Anomaly ITS-90; a0_0; a1_0; salinity	deg C	unknown
sal00_0	Salinity	PSU	sal
specc	Specific Conductance	uS/cm	unknown
sva	Specific Volume Anomaly	10^-8 * m^3/Kg	unknown
tsa	Thermosteric Anomaly	10^-8 * m^3/Kg	unknown
flag	flag	nd	flag
cast	cast id/number	integer	cast
station	station id/number	integer	station

Database

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Dataset: CTD - Profiles - OC449-03