SIO_bottle

Data Object bottle_SIO

contact PIs:

name	title
Dr Kenneth Coale	Principal Investigator
Dr Ken Johnson	Principal Investigator
Dr Rik H. Wanninkhof	Co-Principal Investigator
Dr Zanna Chase	Co-Principal Investigator

Dataset description

SIO-CTD Rosette bottle basic CTD hydrographic and nutrient data

Acquisition description

 dates:           10 January 2002 to 10 February 2002  (20020110-20020210)
 location:        N: -54.093  S: -66.602  W: -172.153  E: -169.242 
 project/cruise:  SOFeX/RR

Processing description

 Change history: YYMMDD
   060110: original version prepared from an Excel file of merged CTD, nutrient 
           and SF6 data file, by Terry McKee (PO Dept, WHOI);
           all units information taken from original .xls file;
   060206: added to OCB database by Cyndy Chandler, OCB DMO, (cchandler@whoi.edu)
   070328: dates and position information corrected to match Seabird header records

06 February 2006: Prepared for OCB data system by Terry McKee (PO Dept, WHOI) and Cyndy Chandler, OCB DMO (WHOI).

The SIO_bottle data object was prepared from an Excel file of merged CTD, nutrient and SF6 data file for the SIO-CTD Rosette on Revelle. Contact Zanna Chase (zanna@mbari.org) with questions the about the original data.
The Excel file was downloaded in December 2005 from the SOFeX data web site:
merged_SIO_CTD_nut_sf6.xls

Nutrients were run at MBARI on an Alpkem RFA.
Some vials thawed during transit and produced bad numbers; these have been excluded.

Note: Temp is T90 (ITS-90 scale confirmed from .btl file headers);
PO4, Si, NO3 and NO2 are all µM, micromolar

The event number, date, time, latitude and longitude position information were taken from the *.hdr CTD header (NMEA) records.

SF6 data

SF6 data are from SF6_Revelle_final.xls posted by Kevin Sullivan in October, 2002
SF6_Revelle_final.xls

Questions concerning the SF6 data (October, 2002 revision) should go to Rik Wanninkhof or Kevin Sullivan (kevin.sullivan@noaa.gov).

Additional comments are available in the cruise report by Kevin Sullivan (SOFEX_report-kfsullivan.pdf; converted from the original Word .doc file)

These comments pertain to the original Excel workbook file:
For profile data (in "casts, purge&trap" worksheet):
These analyses, except on station #8, were done via purge and trap with a ~240 ml stripping chamber. The samples for cast #8 were drawn into glass syringes and the water was equilibrated with added UHP nitrogen. The SF6 in the headspace was measured.

The station, cast, and niskin numbers were recorded by the SF6 analysts along with the SF6 results, which are reported in femtomoles per liter seawater. The hydro files were the source of the rest of the data.

When replicate sample bottles were drawn from the same niskin, the analyses are listed in the order of drawing. A single open line separates individual casts; double open lines separate the visitations to the two enriched patches.

Field Names List

Parameter	Description	Units
event	unique sampling event number from event log (day of year and time (UTC))	doYhhmm
date	date sampling began (UTC)	YYYYMMDD
time	time sampling began (UTC)	hhmm
time_L	time, local (GMT +13)	hhmm
lon	longitude, negative denotes West	decimal degrees
lat	latitude, negative denotes South	decimal degrees
seafloor	seafloor depth	meters
station	station location number	dimensionless
cast	CTD cast number per cruise	dimensionless
bot	Rosette bottle number	dimensionless
press	pressure, from CTD Strain Gauge	decibars
depth	depth, calculated from pressure	meters
temp	temperature, from CTD, ITS-90 (from primary T0 sensor)	degrees Celsius
potemp	potential temperature, ITS-90 (from primary T0,C0 sensors)	degrees Celsius
sal	salinity, from CTD, PSS-78 (PSU) (from primary T0,C0 sensors)	dimensionless
sigma_0	sigma theta (potential density) (from primary T0,C0 sensors)	kilograms/meter^3
O2_ml_L	oxygen, dissolved	ml/liter
O2_sat	oxygen saturation	ml/liter
O2_satP	oxygen saturation, percent	percent
trans	transmissivity (CST-492D)	percent
fluor	fluorescence, chelsea FlC	unknown ??
PAR	Photosynthetically Available Radiation irradiance	unknown ??
SPAR	surface PAR irradiance	unknown ??
cond	conductivity	mS/cm
bat	unknown	unknown ??
sta	station identifier	dimensionless
O2_umol_kg	oxygen, dissolved	mM/kg
PO4	Phosphate	microMolar
Si	Silicon	microMolar
NO3	Nitrate	microMolar
NO2	Nitrite	microMolar
SF6	SF6	fM

Platforms List

R/V Melville COOK19MV

R/V Roger Revelle DRFT08RR

Instruments List

CTD Seabird 9:
CTD fitted with additional sensors:
fluorometer, chelsea
transmissometer
altimeter
irradiance (PAR)
oxygen
oxygen, temperature
surface irradiance (SPAR)

This document is created from the content of the BCO-DMO metadata database. 2009-11-22 09:37:12

info app: /home/ocb/dbase v.090827 CLC
Data URL: http://ocb.whoi.edu/jg/serv/OCB/SOFeX/Melville/SIO_bottle.