Dataset: CTD TM_Rosette Nutrients Chl
Deployment: IronExII_MV

CTD, TM Rosette CTD, nutrients and chlorophyll data

Principal Investigator:

Ken Johnson (Moss Landing Marine Laboratories, MLML)

Co-Principal Investigator:

Kenneth H. Coale (Moss Landing Marine Laboratories, MLML)

Contact:

Doug Mackie (New Zealand National Institute of Water and Atmospheric Research, NIWA)

BCO-DMO Data Manager:

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

Project:

Iron Experiment II (IronExII)

Current State:

Final no updates expected

Version:

22July2009

Version Date:

2009-07-22

Data URL:

https://www.bco-dmo.org/dataset-deployment/452679/data

Expand/Collapse All

Description

IronExII CTD, TM Rosette CTD, nutrients and chlorophyll data

Methods & Sampling

Dataset acquisition description

Data Processing Description

Dataset Processing Description

BCO-DMO Note:
No metadata supplied with these data
Some parameters and units require additional work

BCO-DMO Processing Notes
Prepared by WHOI OCB-DMO from original file: FeX2 edited CTD,TM ROS,nuts and C.XLS
Original file was downloaded on 16June2008 from http://www.mbari.org/sofex/IronEx_II.htm

Changes made to original file:
- Extensive editing to remove blank lines, organize data (stations, etc) into rows/columns
- Multiple occurrences of parameter header lines throughout file removed
- Single parameter header line at top retained after reformatting
- Misc comments replicated in cast log removed from file

- Parameter names edited to conform to BCO-DMO convention
- Discrepancy in units for parameters Total_PP and Total_HP
- Units reported as µgC/l in some cases, µM C in others
- This discrepancy still needs to be resolved (BCO-DMO, 22July2009)
- Duplicate parameter names Phaeo changed to Phaeo_a and Phaeo_b

- Station changed to Station_Id as parameter name
- Station_ids using multiple rows combined into one station id
- Spaces replaced with underscores in station_ids
- "#305" is sample number for Transect_thru_hull_#305 in these stations

- date, time, event, cast, lat, lon manually inserted from Cast Log using event in Cast Log
- Original lat/lons, dates, times checked against same data in Cast Log before using
- Found SLIGHT differences between original and cast log
- Used cast log values throughout (appeared to be more reliable/consistent)
- Original event replaced with event from Cast_Log for consistency

- "nd" inserted as no data value in blank cells

Issues/Notes:
TM-Rosette-test: "note NO3 rinse" comment removed

Cochlan (in original event column) - What does Cochlan mean/signify??

Event: 19951473510 - obvious incorrect time but no correction found
Station_Id: TM-Rosette_259 Original Time is 1440, Cast Log time is 1727 (Used Cast Log)
Station_Id: TM-Rosette_314 Original Time is 1402, Cast Log time is 0000
(Used Cast Log - 1402 is closer to on deck time)

More information about this dataset deployment

Funding

Award Number	Funding Source
N00014-94-10125	Office of Naval Research
OCE-9217518	NSF Division of Ocean Sciences

Instruments

CTD - profiler

Supplied Name: Conductivity, Temperature, Depth

Supplied Description:

Instrument Type

Generic Name: CTD - profiler

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

Generic Description:

The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.

This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.

Trace Metal Bottle

Supplied Description:

Instrument Type

Generic Name: Trace Metal Bottle

Acronym: TM Bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/30/

Generic Description:

Trace metal (TM) clean rosette bottle used for collecting trace metal clean seawater samples.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
date	Date UTC	YYYYMMDD	date
time	Time UTC	HHMM	time
lat	latitude, negative denotes South	decimal degrees	lat
lon	longitude, negative denotes West	decimal degrees	lon
event	Unique event number (Generated by BCO-DMO)	YYYYDAYHHMM	event
yrday	Day of year	integer	yrday
cast	Cast id	integer	cast
depth	Depth in meters	meters	depth
POC	POC	ug	POC
Oxygen	Oxygen	uM	O2
Chla	Chl-a	mg/m3	chl_a
NH4	NH4	uM	NH4
PO4	PO4	uM	PO4
SiO4	SiO4	uM	SiO4
NO3	NO3	uM	NO3
Station_Id	Cruise station id	text	sta_id
Phaeo_a	Phaeo_a	mg/m3	no_bcodmo_term
Phaeo_b	Phaeo_b	microM(??)	no_bcodmo_term
SF6	SF6	mol dm-3	no_bcodmo_term
Potemp	Potemp	(tbd)	potemp
Sal	Sal	(tbd)	sal
Fluor	Flour	(tbd)	fluor
Trans	Trans	(tbd)	trans
Sigmat	Sigmat	(tbd)	sigma_t
Total_PP	Total_PP	microM	no_bcodmo_term
Total_HP	Total_HP	microM	no_bcodmo_term
Synoc	Synoc	(tbd)	no_bcodmo_term
RFP	RFP	(tbd)	no_bcodmo_term
Prymn	Prymn	(tbd)	no_bcodmo_term
Dino	Dino	(tbd)	no_bcodmo_term
Diatom	Diatom	(tbd)	diatom
H_Flagell	H_Flagell	(tbd)	no_bcodmo_term
H_Dino	H_Dino	(tbd)	no_bcodmo_term
H_Ciliate	H_Ciliate	(tbd)	no_bcodmo_term
A_Ciliate	A_Ciliate	(tbd)	no_bcodmo_term

Database

Contribute Data

Dataset: CTD TM_Rosette Nutrients Chl
Deployment: IronExII_MV

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: CTD TM_Rosette Nutrients ChlDeployment: IronExII_MV

Dataset acquisition description

Dataset Processing Description

Dataset: CTD TM_Rosette Nutrients Chl
Deployment: IronExII_MV