Dataset: CTD - Bottles - OC449-03

Name: Averaged bottle measurements from CTD casts on R/V Oceanus cruise OC449-03 in the Coastal transect between Cape Verde and Mauritanian coast in 2008 (SIRENA project)
Published: 2011-10-13
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 Data Manager:

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

Version:

13 October 2011

Version Date:

2011-10-13

Validated:

Current State:

Preliminary and in progress

Averaged bottle measurements from CTD casts on R/V Oceanus cruise OC449-03 in the Coastal transect between Cape Verde and Mauritanian coast in 2008 (SIRENA project)

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Description

CTD Bottle Data - avg, stdev,min and max values at bottle firings for various parameters

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.

Methods & Sampling

* Sea-Bird SBE 9 Data File:
* FileName = C:dataoc449-03_016.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 13 2008 23:43:34
* NMEA Latitude = 19 50.80 N
* NMEA Longitude = 017 41.17 W
* NMEA UTC (Time) = Sep 13 2008 23:43:32
* Store Lat/Lon Data = Append to Every Scan
** station_006
# interval = seconds: 0.0416667
# start_time = Sep 13 2008 23:43:34
# 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 16 2008 14:23:13, 7.15
# datcnv_in = c:ctd_processingoc449-03_016.hex c:ctd_processingoc449-03_016.con
# datcnv_bottle_scan_range_source = scans marked with bottle confirm bit, 0, 2
# bottlesum_date = Sep 16 2008 14:24:56, 7.15
# bottlesum_in = c:ctd_processingoc449-03_016.ros c:ctd_processingoc449-03_016.con c:ctd_processingoc449-03_016.BL

Data Processing Description

BCO-DMO Processing Notes
- Awk written to reformat original .btl files contributed by Phoebe Lam
- AWK: OC449-03_CTDbtl_2_BCODMO.awk

Data Files

File
CTDbtl_OC449_03.csv (Comma Separated Values (.csv), 302.96 KB) MD5:90f22101afd22e1f13190542e106fd95 Primary data file for dataset ID 3491

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

Niskin bottle

Supplied Description:

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

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 from header record (South is negative)	decimal degrees	lat
lon	Station longitude from header record (West is negative)	decimal degrees	lon
bottle_position	Bottle position	integer	bottle
date_bottle	Date of bottle firing	YYYYMMDD	date
time_bottle	Time of bottle firing	HHMMSS	time
Density00	Density	Kg/m^3	density
N2satML_L	Nitrogen Saturation	ml/l	no_bcodmo_term
OxsatML_L	Oxygen Saturation	ml/l	O2sat
Sbeox0ML_L	Oxygen SBE 43	ml/l	O2
Potemp090C	Potential Temperature ITS-90	degrees Celsius	potemp
Sal00	Salinity	PSU	sal
Sva	Specific Volume Anomaly	10^-8 * m^3/Kg	no_bcodmo_term
TimeS_avg	Elapsed time average	seconds	time_elapsed
TimeS_sdev	Elapsed time standard of deviation	seconds	time_elapsed
TimeS_min	Elapsed time minimum	seconds	time_elapsed
TimeS_max	Elapsed time maximum	seconds	time_elapsed
PrDM_avg	Pressure Digiquartz average	decibars	press
PrDM_sdev	Pressure Digiquartz standard of deviation	decibars	press
PrDM_min	Pressure Digiquartz minimum	decibars	press
PrDM_max	Pressure Digiquartz maximum	decibars	press
DepSM_avg	Depth salt water average	meters	depth
DepSM_sdev	Depth salt water standard of deviation	meters	depth
DepSM_min	Depth salt water minimum	meters	depth
DepSM_max	Depth salt water maximum	meters	depth
T090C_avg	Temperature ITS-90 average	degrees Celsius	temp
T090C_sdev	Temperature ITS-90 standard of deviation	degrees Celsius	temp
T090C_min	Temperature ITS-90 minimum	degrees Celsius	temp
T090C_max	Temperature ITS-90 maximum	degrees Celsius	temp
T190C_avg	Temperature 2 ITS-90 average	degrees Celsius	temp
T190C_sdev	Temperature 2 ITS-90 standard of deviation	degrees Celsius	temp
T190C_min	Temperature 2 ITS-90 minimum	degrees Celsius	temp
T190C_max	Temperature 2 ITS-90 maximum	degrees Celsius	temp
Sal00_avg	Salinity average	PSU	sal
Sal00_sdev	Salinity standard of deviation	PSU	sal
Sal00_min	Salinity minimum	PSU	sal
Sal00_max	Salinity maximum	PSU	sal
Sal11_avg	Salinity 2 average	PSU	sal
Sal11_sdev	Salinity 2 standard of deviation	PSU	sal
Sal11_min	Salinity 2 minimum	PSU	sal
Sal11_max	Salinity 2 maximum	PSU	sal
C0S_m_avg	Conductivity average	S/m	cond
C0S_m_sdev	Conductivity standard of deviation	S/m	cond
C0S_m_min	Conductivity minimum	S/m	cond
C0S_m_max	Conductivity maximum	S/m	cond
C1S_m_avg	Conductivity 2 average	S/m	cond
C1S_m_sdev	Conductivity 2 standard of deviation	S/m	cond
C1S_m_min	Conductivity 2 minimum	S/m	cond
C1S_m_max	Conductivity 2 maximum	S/m	cond
Sbeox0V_avg	Oxygen Voltage SBE 43 average	volts	O2_v
Sbeox0V_sdev	Oxygen Voltage SBE 43 standard of deviation	volts	O2_v
Sbeox0V_min	Oxygen Voltage SBE 43 minimum	volts	O2_v
Sbeox0V_max	Oxygen Voltage SBE 43 maximum	volts	O2_v
Sbeox0ML_L_avg	Oxygen SBE 43 average	ml/l	O2
Sbeox0ML_L_sdev	Oxygen SBE 43 standard of deviation	ml/l	O2
Sbeox0ML_L_min	Oxygen SBE 43 minimum	ml/l	O2
Sbeox0ML_L_max	Oxygen SBE 43 maximum	ml/l	O2
Xmiss_avg	Beam Transmission Chelsea/Seatech/Wetlab CStar average	percentage	trans
Xmiss_sdev	Beam Transmission Chelsea/Seatech/Wetlab CStar standard of deviation	percentage	trans
Xmiss_min	Beam Transmission Chelsea/Seatech/Wetlab CStar minimum	percentage	trans
Xmiss_max	Beam Transmission Chelsea/Seatech/Wetlab CStar maximum	percentage	trans
Density00_avg	Density average	Kg/m^3	density
Density00_sdev	Density standard of deviation	Kg/m^3	density
Density00_min	Density minimum	Kg/m^3	density
Density00_max	Density maximum	Kg/m^3	density
Potemp090C_avg	Potential Temperature ITS-90 average	degrees Celsius	potemp
Potemp090C_sdev	Potential Temperature ITS-90 standard of deviation	degrees Celsius	potemp
Potemp090C_min	Potential Temperature ITS-90 minimum	degrees Celsius	potemp
Potemp090C_max	Potential Temperature ITS-90 maximum	degrees Celsius	potemp
FlECO_minus_AFL_avg	Fluorescence Wetlab ECO-AFL/FL average	mg/m^3	fluor
FlECO_minus_AFL_sdev	Fluorescence Wetlab ECO-AFL/FL standard of deviation	mg/m^3	fluor
FlECO_minus_AFL_min	Fluorescence Wetlab ECO-AFL/FL minimum	mg/m^3	fluor
FlECO_minus_AFL_max	Fluorescence Wetlab ECO-AFL/FL maximum	mg/m^3	fluor
Upoly0_avg	Upoly 0 WetLabs Turbidity average	tbd	turbidity
Upoly0_sdev	Upoly 0 WetLabs Turbidity standard of deviation	tbd	turbidity
Upoly0_min	Upoly 0 WetLabs Turbidity minimum	tbd	turbidity
Upoly0_max	Upoly 0 WetLabs Turbidity maximum	tbd	turbidity
AltM_avg	Altimeter average	meters	altitude
AltM_sdev	Altimeter standard of deviation	meters	altitude
AltM_min	Altimeter minimum	meters	altitude
AltM_max	Altimeter maximum	meters	altitude
Scan_avg	Scan average	integer	scan
Scan_sdev	Scan standard of deviation	integer	scan
Scan_min	Scan minimum	integer	scan
Scan_max	Scan maximum	integer	scan

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Dataset: CTD - Bottles - OC449-03