Dataset: Bottle data and chemical analysis

Name: Bottle data and chemical analysis from Falkor cruise FK180624 in the Eastern Tropical North Pacific Ocean in 2018
Published: 2020-12-02
Keywords: Eastern tropical North Pacific, oxygen minimum zones, oceans

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Spatial Extent: N:18.00001 E:-101.99474 S:13.99251 W:-119.002069

Temporal Extent: 2018-06-30 - 2018-07-13

Project:

Solving Microbial Mysteries with Autonomous Technology (Microbial Mysteries)

Principal Investigator:

Andrew Babbin (Massachusetts Institute of Technology, MIT)

Co-Principal Investigator:

Karen L. Casciotti (Stanford University)

Contact:

Andrew Babbin (Massachusetts Institute of Technology, MIT)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2020-12-02

Restricted:

Validated:

Current State:

Preliminary and in progress

Bottle data and chemical analysis from Falkor cruise FK180624 in the Eastern Tropical North Pacific Ocean in 2018

Abstract:

Bottle data and chemical analysis from Falkor cruise FK180624 in the Eastern Tropical North Pacific Ocean in 201

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Acquisition Description

The samples were taken using a 24-bottle CTD rosette with 12L bottles. Depths varied per station but were focused in the upper 1000m. 19 stations were sampled with 22 casts total.

Samples were drawn in order: pH, alkalinity, NH4, nutrients (NOx, PO4, NO2). pH, NH4, PO4, NO2 were measured within 3 hours of collection onboard. NOx were filtered (0.22um Sterivex) and frozen. NOx is generally a mean of 3 measurements. Alkalinity were poisoned with a saturated HgCl2 solution and preserved in 160mL crimped serum bottles.

Processing Description

The samples were analysed using the following instruments:

NO2, PO4: Ocean Optics QEPRO spectrophotometer with 10cm Starna flow through quartz cell
NOx: Teledyne T200 NOx analyzer with custom front end for vanadium reduction
pH: Agilent 8454 spectrophotometer with custom front end for automated syringe injection
Alkalinity: Custom total alkalinity titrator built by the lab of Andrew Dickson, UCSD-Scripps

BCO-DMO processing notes:

Added ISO_DateTime_UTC column
Added cruise id

More Information about this dataset

Funding Sources

Funding Source	Award Number
Schmidt Ocean Institute	No Award Number

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
FK180624		2018-06-24	R/V Falkor	Andrew Babbin (Chief Scientist) Karen L. Casciotti (Co-Chief Scientist)	data info

Instruments

Automatic titrator

Supplied Name: Custom total alkalinity titrator

Supplied Description:

Custom total alkalinity titrator built by the lab of Andrew Dickson, UCSD-Scripps

Instrument Type

Generic Name: Automatic titrator

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/

Generic Description:

Instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached.

Chemiluminescence NOx Analyzer

Supplied Name: Teledyne T200 NOx analyzer

Supplied Description:

NOx: Teledyne T200 NOx analyzer with custom front end for vanadium reduction.

Instrument Type

Generic Name: Chemiluminescence NOx Analyzer

Generic Description:

The chemiluminescence method for gas analysis of oxides of nitrogen relies on the measurement of light produced by the gas-phase titration of nitric oxide and ozone. A chemiluminescence analyzer can measure the concentration of NO/NO2/NOX.

One example is the Teledyne Model T200: http://www.teledyne-api.com/products/T200.asp

Spectrophotometer

Supplied Name: Ocean Optics QEPRO spectrophotometer

Supplied Description:

NO2, PO4: Ocean Optics QEPRO spectrophotometer with 10cm Starna flow through quartz cell

Instrument Type

Generic Name: Spectrophotometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/

Generic Description:

An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.

Spectrophotometer

Supplied Name: Agilent 8454 spectrophotometer

Supplied Description:

pH: Agilent 8454 spectrophotometer with custom front end for automated syringe injection

Instrument Type

Generic Name: Spectrophotometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/

Generic Description:

An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
CRUISEID	cruide identifier	unitless	cruise_id
EXPOCODE	cruise EXPO code	unitless	EXPOCODE
STNNBR	station number	unitless	station
CASTNO	cast number	unitless	cast
SAMPNO	sample number	unitless	sample
DATE	sampling date in pacific daylight time (PDT), format:dd-mm-yyy	unitless	date
TIME	time in pacific daylight time (PDT), format: hh:mm:ss	unitless	time
LATITUDE	latitude, south is negative	decimal degrees	lat
LONGITUDE	longitude, west is negative	decimal degrees	lon
BOTTOM_DEPTH	bottom depth of ocean	meters (m)	depth_bottom
CTDPRS	CTD pressure	decibar (dbar)	press
CTDTMP	CTD temperature, International Temperature Scale of 1990 (ITS-90)	degrees Celsius (°C)	temperature
CTDSAL	CTD salinity, Practical Salinity Scale - 1978	PSU	sal
CTDS_FLAG_W	CTD salinity flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn	unitless	flag
CTDOXY	CTD oxygen	micromoles per liters (umol/l)	O2
CTDOXY_FLAG_W	oxygen flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn	unitless	flag
FLOR	calibrated fluoresence from CTD	micrograms per liters (ug/l)	fluor
FLOR_FLAG_W	fluoresence flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
NOx	nitrate + nitrite	micromoles per liters (umol/l)	NO3_NO2
NOx_FLAG_W	total NOx flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
NOx_stdev	standard deviation of NOx	micromoles per liters (umol/l)	std_dev
NOx_STD_FLAG_W	flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
NITRIT_BabLab	nitrite	micromoles per liters (umol/l)	NO2
NITRIT_FLAG_W	nitrite flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
PHSPHT	phosphate	micromoles per liters (umol/l)	PO43-
PHSPHT_FLAG_W	phosphate flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
NH4	ammonium	micromoles per liters (umol/l)	NH4
NH4_FLAG_W	ammonium flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
PH_TOT	pH on the total scale at 25C	unitless	pH
PH_TOT_FLAG_W	pH flag	unitless	flag
PH_TEMP	temperature of pH measurements	degrees Celsius (°C)	temperature
TA	total alkalinity	micromoles per kilograms (umol/kg)	TALK
TA_FLAG_W	total alkalinity flag. WOCE standard, with 2 = good, 3 = questionable, 6 = mean of replicates, 9 = sample not drawn.	unitless	flag
ISO_DateTime_UTC	Date and time of sample and data collection in UTC, standard ISO format (yyyy-mm-ddThh:mmZ)	unitless	ISO_DateTime_UTC

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Dataset: Bottle data and chemical analysis