Dataset: MV1110 CTD Nutrient and Particle Data

Name: CTD bottle data matched to dissolved, inorganic nutrient concentrations and to stable isotope measurements of particulate nitrogen and carbon rom R/V Melville cruise MV1110 in the Western Tropical North Atlantic in 2011
Published: 2024-02-07
Keywords: Nutrients, stable isotopes, Amazon River Plume, hydrography, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.919848.1

Spatial Extent: N:11.628 E:-44.638 S:5.151 W:-56.876

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:

2024-02-07

Restricted:

Validated:

Yes

Current State:

Final no updates expected

CTD bottle data matched to dissolved, inorganic nutrient concentrations and to stable isotope measurements of particulate nitrogen and carbon rom R/V Melville cruise MV1110 in the Western Tropical North Atlantic in 2011

Abstract:

CTD bottle data matched to dissolved, inorganic nutrient concentrations and to stable isotope measurements of particulate nitrogen and carbon.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2024-02-07	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.919848.1	2024-02-23

Description

Hydrographic data and water samples collected during casts with a CTD-rosette system (SBE911plus equipped with a fluorometer, transmissometer, oxygen sensor, and a PAR sensor)

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.

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.

Data Processing Description

Data processed using SeaSave v 7.21d. See seabird-format header information in the supplemental file "MV1110 CTD Header File.'

BCO-DMO Processing

* Sheet 2 of file "DATASET-MV1110_CTD-Nutrients+Particles.xlsx" was imported into the BCO-DMO data system. Sheet 1 metadata was added to BCO-DMO metadata fields.
** Missing data values are displayed differently based on the file format you download. They are blank in csv files, "NaN" in MatLab files, etc.
* 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
919848_v1_mv1110-ctd-nutrient-particle.csv (Comma Separated Values (.csv), 227.25 KB) MD5:ea56e4568310ae043b82574000c4ef67 Primary data file for dataset ID 919848, version 1

Supplemental Files

File
MV1110 CTD Header File (seabird metadata format) filename: seabird_header.txt (Plain Text, 11.78 KB) MD5:a795c8810afe9da66f5514b30a03e0be This seabird-format metadata is in xml format and contains information about the sensors such as calibration information as well as the seabird files these data were processed with.

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

CTD Sea-Bird SBE 911plus

Supplied Name: Seabird SBE 11plus v5.2 for CTD bottle data. Individual sensor details and calibration info provided in the “notes” sheet of the excel file.

Supplied Description:

Seabird SBE 11plus v5.2 for CTD bottle data. Individual sensor details and calibration info provided in the Supplemental File seabird_header.txt

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

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.

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
Anaconda_Num	Internal reference number for samples.	unitless	sample
Niskin_Bottle	description	unitless	bot_Nis
CTD_Cast	description	unitless	cast
Station	description	unitless	station
StnEvent	description	unitless	event
Longitude	Longitude	decimal degrees	lon
Latitude	Latitude	decimal degrees	lat
Yearday	description	unitless	yrday
Date	Date (GMT) Format: %b%d%Y	unitless	date_gmt
Month	Month (GMT)	unitless	month
Day	Day (GMT)	unitless	day
Year	Year (GMT)	unitless	year
Time	Time (GMT) Format: %H:%M	unitless	time_gmt
Hour	Hour (GMT)	unitless	hour_gmt
Minute	Minute (GMT)	unitless	minute_gmt
ISO_DateTime_UTC	DateTime with time zone in ISO 8601 format Format: %Y-%m-%dT%H:%MZ	unitless	ISO_DateTime_UTC
prDM	Pressure, Digiquartz	decibars (db)	press
Average_prDM	Average pressure, Digiquartz	decibars (db)	press
depSM	Depth (salt water)	meters (m)	depth
Average_depSM	Average depth (salt water)	meters (m)	depth
t190C	Temperature, 2 (ITS-90)	degrees C, Celsius	temp
Average_t190C	Average temperature, 2 (ITS-90)	degrees C, Celsius	temp
Potential_Temperature	Potential temperature	degrees C, Celsius	potemp
Average_Potential_Temperature	Average potential temperature	degrees C, Celsius	potemp
sal00	Salinity, Practical	Practical Salinity Units (PSU)	sal
Average_sal00	Average salinity, Practical	Practical Salinity Units (PSU)	sal
Sigma_theta	Sigma-theta potential density	kilograms per cubic meter(kg/m^3)	sigma_0
Average_Sigma_theta	Average sigma-theta potential density	kilograms per cubic meter(kg/m^3)	sigma_0
sbeox0Mm_Kg	Dissolved oxygen (sbeox0Mm/Kg), SBE 43	micromoles per kilogram (umol/kg)	O2
Average_sbeox0Mm_Kg	Average dissolved oxygen (sbeox0Mm/Kg) , SBE 43	micromoles per kilogram (umol/kg)	O2
Oxygen_Saturation	Oxygen saturation	percent (%)	O2sat
Average_Oxygen_Saturation	Average oxygen saturation	percent (%)	O2sat
Beam_Transmission	Beam transmission	percent (%)	trans
Average_Beam_Transmission	Average beam transmission	percent (%)	trans
Beam_Attenuation	Beam attenuation	per meter (1/m)	beam_cp
Average_Beam_Attenuation	Average beam attenuation	per meter (1/m)	beam_cp
Fluorescence	Fluorescence	migrograms per cubic meter (mg/m^3)	fluor
Average_Fluorescence	Average flourescence	migrograms per cubic meter (mg/m^3)	fluor
PAR	PAR (Photosynthetically active radiation)	microEinsteins per meter squared per second (uEm-2sec-1)	PAR
Average_PAR	Average PAR (Photosynthetically active radiation). (depth average)	microEinsteins per meter squared per second (uEm-2sec-1)	PAR
Mean_PO4	Mean phosphate (PO4). (depth average)	micromolar (uM)	PO4
Mean_Si	Mean silicate, silicon dioxide, SiO2. (depth average)	micromolar (uM)	SiO2
Mean_NO3_NO2	Mean NO3+NO2 (depth average)	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