INVESTIGATORS:
Frank E. Muller-Karger
- University of South Florida (USF)
Yrene M. Astor
- Estacion de Investigaciones Marinas de Margarita (EDIMAR)
Laura Lorenzoni
- University of South Florida - St. Petersburg (USF)
PACKAGE DESCRIPTION: This dataset includes discrete sample, profile and time series profile data collected from HERMANO GINES in the Caribbean Sea from 1995-11-08 to 2015-07-29. These data include AMMONIUM (NH4), DISSOLVED INORGANIC CARBON (DIC), DISSOLVED ORGANIC CARBON, DISSOLVED OXYGEN, Dissolved Organic Nitrogen, NITRATE, NITRITE, PARTICULATE ORGANIC CARBON, PARTICULATE ORGANIC NITROGEN (PON), PHOSPHORUS - ORGANIC, Partial pressure (or fugacity) of carbon dioxide - water, SALINITY, SIGMA-THETA, TOTAL ALKALINITY (TA), Total Organic Carbon (TOC), WATER TEMPERATURE, nitrate + nitrite content (concentration), pH, phosphate and silicate. The instruments used to collect these data include Alkalinity titrator, CTD, bottle and spectrophotometer.
These data were collected by Yrene M. Astor of Estacion de Investigaciones Marinas de Margarita and Frank E. Muller-Karger and Laura Lorenzoni of University of South Florida as part of the CARIACO_TS data set. CDIAC associated the following cruise ID(s) with this data set: CARIACO Time-Series
The Global CO2 Time-series and Moorings Project involves international groups from 18 countries who have mounted sensors on moored buoys to provide high resolution time-series measurements of atmospheric boundary layer and surface ocean CO2 partial pressure (pCO2). The CO2 Time-series and Moorings Project is coordinated by UNESCO International Ocean Carbon Coordination Project (IOCCP).
CITE AS: Muller-Karger, Frank E.; Lorenzoni, Laura; Astor, Yrene M. (2013). Partial pressure (or fugacity) of carbon dioxide, dissolved inorganic carbon, pH, alkalinity, temperature, salinity and other variables collected from discrete sample, profile and time series profile observations using Alkalinity titrator, CTD and other instruments from HERMANO GINES in the Caribbean Sea from 1995-11-08 to 2015-07-29 (NCEI Accession 0112926). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.cariaco_ts. Accessed [date].
DATA PACKAGES RELATED TO THIS ONE:
none;
IDENTIFICATION INFORMATION FOR THIS DATA PACKAGE:
NCEI ACCESSION: 0112926
NCEI DOI: https://doi.org/10.3334/cdiac/otg.cariaco_ts
EXPOCODE: 93HG19951108;
CARIACO_1995-2015;
CRUISE ID: CARIACO Time-Series;
SECTION/LEG: CARIACO Time-Series;
TYPES OF STUDY: Discrete measurement;Profile;TEMPORAL COVERAGE:
START DATE: 1995-11-08
END DATE: 2015-07-29
SPATIAL COVERAGE:
WEST: -64.67
EAST: -64.67
GEOGRAPHIC NAMES: Atlantic Ocean;
PLATFORMS: R/V Hermano Gines (ID: 93HG);
RESEARCH PROJECT(S):
none;
VARIABLES / PARAMETERS:
| Dissolved Inorganic Carbon |
|---|
| Abbreviation: |
DIC |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Calculated |
| Detailed sampling and analyzing information: |
CO2SYS program (Lewis, E., and D. W. R. Wallace. 1998), using Total Alkalinity and pH as input variables, Total pH scale, K1 K2 dissociation constants of Mehrbach refit by Dickson and Millero and KSO4 dissociation constant of Dickson. |
| Total alkalinity |
|---|
| Abbreviation: |
TA |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Curve fitting method: |
Seawater was acidified by a titration to the inflexion point using bromocresol green as indicator. CO2 was then purged from the sample by bubbling with nitrogen gas, and the acid excess was measured at 25 8C by spectrophotometer. Alkalinity was calculated from absorbance readings (444 nm and 616 nm), the known amount of hydrogen ion added, and the excess remaining. |
| Uncertainty: |
Precision of TA measurements is 4 μmol kg-1, as obtained from replicate measurements. Certified alkalinity reference materials (CRM's) supplied by A. G. Dickson (Scripps Institute of Oceanography) were analyzed for TA with each batch of samples for each cruise. The standard deviation between the mean value of alkalinity measurements of the standards and the certified value was 2 μmol kg-1. |
| Method reference: |
Breland II, J.A., R.H. Byrne. 1993. Spectrophotometric procedures for determination of seawater alkalinity using bromocresol green. Deep-Sea Res. I 40 (3), 629-641 Astor, Y.M., M.I. Scranton, F. Muller-Karger, R. Bohrer, J. García. 2005a. fCO2 variability at the CARIACO tropical upwelling time series station. Mar. Chem. 97 245-261. Yao, W., R.H. Byrne. 1998. Simplified seawater alkalinity analysis: use of linear array spectrometers. Deep-Sea Res. I 45, 1383-1392. |
| pH |
|---|
| Abbreviation: |
pH |
| pH scale: |
Total |
| Observation type: |
discrete |
| In-situ / Manipulation / Response variable: |
In-situ observation |
| Measured or calculated: |
Measured |
| Temperature of pH measurement: |
25 |
| Detailed sampling and analyzing information: |
Spectrophotometric method. Analyses were made on board ship within one hour of sample collection. |
| Uncertainty: |
The precision of pH measurements are 0.003 pH, as determined from replicates. |
| CTDTMP |
|---|
| Abbreviation: |
CTDTMP |
| Unit: |
DEG_C |
| Controlled vocabulary name: |
WATER TEMPERATURE |
| In-situ / Manipulation / Response variable: |
in-situ |
| CTDSAL |
|---|
| Abbreviation: |
CTDSAL |
| Controlled vocabulary name: |
SALINITY |
| In-situ / Manipulation / Response variable: |
in-situ |
| SALNTY |
|---|
| Abbreviation: |
SALNTY |
| Controlled vocabulary name: |
SALINITY |
| In-situ / Manipulation / Response variable: |
in-situ |
| OXYGEN |
|---|
| Abbreviation: |
OXYGEN |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
DISSOLVED OXYGEN |
| In-situ / Manipulation / Response variable: |
in-situ |
| NITRAT |
|---|
| Abbreviation: |
NITRAT |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
NITRATE |
| In-situ / Manipulation / Response variable: |
in-situ |
| NITRIT |
|---|
| Abbreviation: |
NITRIT |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
NITRITE |
| In-situ / Manipulation / Response variable: |
in-situ |
| PHSPHT |
|---|
| Abbreviation: |
PHSPHT |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
phosphate |
| In-situ / Manipulation / Response variable: |
in-situ |
| SILCAT |
|---|
| Abbreviation: |
SILCAT |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
silicate |
| In-situ / Manipulation / Response variable: |
in-situ |
| TCARBN |
|---|
| Abbreviation: |
TCARBN |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
DISSOLVED INORGANIC CARBON (DIC) |
| In-situ / Manipulation / Response variable: |
in-situ |
| ALKALI |
|---|
| Abbreviation: |
ALKALI |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
total alkalinity |
| In-situ / Manipulation / Response variable: |
in-situ |
| FCO2 |
|---|
| Abbreviation: |
FCO2 |
| Unit: |
UATM |
| Controlled vocabulary name: |
partial pressure of carbon dioxide - water |
| In-situ / Manipulation / Response variable: |
in-situ |
| PH_TOT |
|---|
| Abbreviation: |
PH_TOT |
| Unit: |
@25C |
| Controlled vocabulary name: |
pH |
| In-situ / Manipulation / Response variable: |
in-situ |
| PH_TMP |
|---|
| Abbreviation: |
PH_TMP |
| Unit: |
DEG_C |
| Controlled vocabulary name: |
pH |
| In-situ / Manipulation / Response variable: |
in-situ |
| POC |
|---|
| Abbreviation: |
POC |
| Unit: |
UG/KG |
| Controlled vocabulary name: |
PARTICULATE ORGANIC CARBON |
| In-situ / Manipulation / Response variable: |
in-situ |
| PON |
|---|
| Abbreviation: |
PON |
| Unit: |
UG/KG |
| Controlled vocabulary name: |
PARTICULATE ORGANIC NITROGEN (PON) |
| In-situ / Manipulation / Response variable: |
in-situ |
| DOC |
|---|
| Abbreviation: |
DOC |
| Unit: |
UM |
| Controlled vocabulary name: |
DISSOLVED ORGANIC CARBON |
| In-situ / Manipulation / Response variable: |
in-situ |
| TOC |
|---|
| Abbreviation: |
TOC |
| Unit: |
UM |
| Controlled vocabulary name: |
Total Organic Carbon (TOC) |
| In-situ / Manipulation / Response variable: |
in-situ |
| NH4 |
|---|
| Abbreviation: |
NH4 |
| Unit: |
UMOL/KG |
| Controlled vocabulary name: |
AMMONIUM (NH4) |
| In-situ / Manipulation / Response variable: |
in-situ |
| SIGMA_THETA |
|---|
| Abbreviation: |
SIGMA_THETA |
| Unit: |
KG/M3 |
| Controlled vocabulary name: |
SIGMA-THETA |
| In-situ / Manipulation / Response variable: |
in-situ |
| TPP |
|---|
| Abbreviation: |
TPP |
| Unit: |
NANOMOL/KG |
| In-situ / Manipulation / Response variable: |
in-situ |
PUBLICATIONS DESCRIBING THIS DATASET: Astor, Y., F. Muller-Karger, M. Scranton. 2003. Seasonal and interannual variation in the hydrography of the Cariaco Basin: Implications for basin ventilation. Cont. Shelf Res. 23 (1), 125-144.
Astor, Y.M., M.I. Scranton, F. Muller-Karger, R. Bohrer, J. García. 2005a. fCO2 variability at the CARIACO tropical upwelling time series station. Mar. Chem. 97 245-261.
Astor, Y., M.I. Scranton, F. Muller-Karger, R. Bohrer, J. García. 2005b. "Variabilidad interanual y estacional del CO2 y nutrientes en la Fosa de Cariaco". Mem. Fund. La Salle Cienc. Nat. 161-162, 235-252.
ADDITIONAL INFORMATION: none;
FUNDING AGENCY:
SUBMITTED BY: Alex Kozyr (Alex.Kozyr@noaa.gov)
SUBMISSION DATE: 2013-09-13
REVISION DATE: 2016-05-04
PREVIOUS VERSIONS: Version 1.1
