Dataset: MV1110 Underway Nutrient and Particle Data

Name: Underway nutrient and particle data from R/V Melville cruise MV1110 in the Western Tropical North Atlantic in 2011
Published: 2024-02-06
Keywords: Nutrients, stable isotopes, Amazon River Plume, hydrography, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.919764.1

Spatial Extent: N:11.6533 E:-44.7182 S:4.803 W:-56.7984

Western Tropical North Atlantic

Temporal Extent: 2011-09-05 - 2011-10-06

Project:

Amazon iNfluence on the Atlantic: CarbOn export from Nitrogen fixation by DiAtom Symbioses (ANACONDAS)

Program:

Integrated Marine Biogeochemistry and Ecosystem Research -US (IMBER-US)

Ocean Carbon and Biogeochemistry (OCB)

Emerging Topics in Biogeochemical Cycles (ETBC)

Marine Microbiology Initiative (MMI)

Principal Investigator:

Joseph Montoya (Georgia Institute of Technology, GA Tech)

Co-Principal Investigator:

Patricia L. Yager (University of Georgia, UGA)

Contact:

Erica Strope (Georgia Institute of Technology, GA Tech)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-02-06

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Underway nutrient and particle data from R/V Melville cruise MV1110 in the Western Tropical North Atlantic in 2011

Abstract:

Dissolved, inorganic nutrient concentrations and stable isotope measurements of particulate nitrogen and carbon collected from the ship's Underway system while transiting between stations.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2024-02-06	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.919764.1	2024-02-23

Methods & Sampling

The ship’s Underway system was equipped with an in-line Seabird thermosalinograph to collect sea surface temperature (SST) and sea surface salinity (SSS) data from 5-7m below sea surface.

Nutrient samples were run at sea using a Lachat QuickChem 8000 flow-injection analyzer equipped with the following methods:

Phosphate                    31-115-01-1-I
Silicate                                     31-114-27-1-B
Nitrate+Nitrite             31-107-04-1-A
Nitrite                          31-107-05-1-A

Particle (particulate N and C) samples for stable isotope (d15N, d13C) were collected and analyzed following methods in Montoya et al. 2002.

BCO-DMO Processing

* Sheet 1 of file "DATASET-MV1110_UW-Nutrients+Particles.xlsx" was imported into the BCO-DMO data system.
** Missing data values are displayed differently based on the file format you download. They are blank in csv files, "NaN" in MatLab files, etc.
* date value in the original excel file had one date with an issue. Row 64 of the original excel sheet had date displayed as "01/10/04" with the underlying excel value "1/10/1904 3:07:12 AM". This value was in the middle of the measurements for 9/13/2011 and the time 10:00 was the expected time for that row. That date value was changed to 9/13/2011 (confirmed this is the correct change with the submitter).

* Column names adjusted to conform to BCO-DMO naming conventions designed to support broad re-use by a variety of research tools and scripting languages. [Only numbers, letters, and underscores. Can not start with a number]

* ISO_DateTime_UTC added ISO 8601 format datetime with timezone

Data Files

File
919764_v1_mv1110-uw-nutrient-particle.csv (Comma Separated Values (.csv), 28.02 KB) MD5:c55f8ca821a80cd5d849e75d90f6af81 Primary data file for dataset ID 919764, version 1

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0934025

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
MV1110	AN11 ANACONDAS ROCA	2011-09-03	R/V Melville	Patricia L. Yager (Chief Scientist)	data info

Instruments

Isotope-ratio Mass Spectrometer

Supplied Name: Micromass Optima or Isoprime 100

Supplied Description:

Stable isotopes were measured using continuous-flow isotope-ratio mass spectrometry (CF-IRMS) on either a Micromass Optima or Isoprime 100. Both instruments were interfaced to a Carlo Erba elemental analyzer.

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).

Lachat QuikChem 8000 flow injection analyzer and Ion Chromatography (IC) system

Supplied Name: Lachat Quikchem 8000 Series

Supplied Description:

Lachat Quikchem 8000 Series for dissolved, inorganic nutrients

Instrument Type

Generic Name: Lachat QuikChem 8000 flow injection analyzer and Ion Chromatography (IC) system

Generic Description:

The Lachat QuikChem 8000 can operate flow injection analysis and ion chromatography simultaneously and independently on the same instrument platform. Instrument includes sampler, dilutor, sampling pump, electronics unit, and data station. Analysis takes 20-60 seconds, with a sample throughput of 60-120 samples per hour. Measurements are in the range of parts per trillion to parts per hundred.

Thermosalinograph

Supplied Name:

Supplied Description:

An in-line Seabird thermosalinograph was used to measure underway SST and SSS.

Instrument Type

Generic Name: Thermosalinograph

Acronym: TSG

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/133/

Generic Description:

A thermosalinograph (TSG) is used to obtain a continuous record of sea surface temperature and salinity. On many research vessels the TSG is integrated into the ship's underway seawater sampling system and reported with the underway or alongtrack data.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	Cruise identifier	unitless	cruise_id
Underway_StnEvent	Underway StnEvent is a numeric identifier for each sample collection in the format Station#.Event# ; Station# is the station number the ship was transiting from and Event# identifies the specific sampling event.	unitless	sample
Date	Date Format: %m/%d/%y	unitless	date_gmt
Time	Time (GMT) Format: %H:%M	unitless	time_gmt
ISO_DateTime_UTC	DateTime (UTC) in ISO 8601 format with time zone Format: %Y-%m-%dT%H:%MZ	unitless	ISO_DateTime_UTC
Longitude	Longitude	decimal degrees	lat
Latitude	Latitude	decimal degrees	lon
SST	Sea surface temperature (SST)	degrees C (Celsius)	SST
SSS	Sea surface salinity (SSS)	Practical Salinity Units (PSU)	sal_ss
Mean_PO4	Mean phosphate (PO4)	micromolar (uM)	PO4
Mean_Si	Mean silicate, silicon dioxide SiO2	micromolar (uM)	SiO2
Mean_NO3_NO2	Mean NO3+NO2	micromolar (uM)	NO3_NO2
Mean_N	Mean N. N is the deficit of nitrogen (NOx, NO3 +NO2) relative to phosphorus (P) compared to the Redfield ratio, calculated: (NOx - (16PO4)+2.9) 0.87) .Equation (13) from Gruber and Sarmiento 1997.	unknown	no_bcodmo_term
d15N	d15N	permil (0/00)	d15N
d13C	d13C	permil (0/00)	d13C
C_to_N	Ratio C:N	unitless	C_to_N
Total_Particulate_N	Total particulate nitrogen	micromolar (uM)	TPN
Total_Particulate_C	Total particulate carbon	micromolar (uM)	TPC