Dataset: MICA

Name: MICA data from USCGC Healy cruise HLY1202 from the Arctic, North of Alaska in 2012 (OA - Canada Basin project)
Published: 2014-09-09
Keywords: oceans

Cite This Dataset

Spatial Extent: N:81.7637587 E:-161.7760828 S:78.9066347 W:-172.8847695

Project:

Ocean Acidification in the Canada Basin: Roles of Sea Ice (OA - Canada Basin)

Program:

Science, Engineering and Education for Sustainability NSF-Wide Investment (SEES): Ocean Acidification (formerly CRI-OA) (SEES-OA)

Principal Investigator:

Dr Bogdan Onac (University of South Florida, USF)

Dr Jonathan Wynn (University of South Florida, USF)

Co-Principal Investigator:

Dr Lisa Robbins (United States Geological Survey, USGS)

Contact:

Dr Lisa Robbins (United States Geological Survey, USGS)

BCO-DMO Data Manager:

Stephen R. Gegg (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

09 September 2014

Version Date:

2014-09-09

Current State:

Preliminary and in progress

MICA data from USCGC Healy cruise HLY1202 from the Arctic, North of Alaska in 2012 (OA - Canada Basin project)

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Description

USGS Arctic Ocean Carbon Cruise 2012: MICA Data
MICA data from the HLY 1202 cruise

Multiparameter Inorganic Carbon Analyzer (MICA)

For aditional information see:
HLY1202 Cruise Report, Appendix E
U.S. Geological Survey Data Series 862 - Methods

Methods & Sampling

Underway Continuous Measurements

Approximately 1,800 continuous measurements of pH, TCO2, salinity, and temperature were collected from August 31, 2012, to September 2, 2012, using a flow-through Multiparameter Inorganic Carbon Analyzer (MICA) and Sea-Bird SBE49 CTD attached to the flow-through system of the USCGC Healy. The intake of the shipboard flow-through system was located approximately 8 meters (m) below the sea surface on the port side of the vessel. Water entered the sampling baffles at depth, was pumped to an ice chest for separation of ice, and was then pumped to a multi-port sampling manifold located in the ship's laboratory. Filtered seawater then flowed through a custom made PVC de-bubbler containing a Sea-Bird SBE49, and was pumped peristaltically into the intake port of the MICA. Measurements were taken and logged approximately every 2 min except during a MICA flushing cycle which occurred for approximately 10 min each hour (h). The MICA was calibrated using Certified Reference Material from Professor Andrew Dickson of the University of California at San Diego. Precision and accuracy for each channel was 0.002 for pH and 2 micromoles per kilogram (umol/kg) for TCO2.

For aditional information see:
HLY1202 Cruise Report, Appendix E
U.S. Geological Survey Data Series 862 - Methods

Data Processing Description

Underway Continuous Measurements

The QA/QC process looked for internal consistencies in the data by comparing the values to known ranges for Arctic seawater. Additionally, the light intensity of acid and base spectrophotometric wavelengths were analyzed and points that did not meet minimum threshold values were discarded.

For aditional information see:
HLY1202 Cruise Report, Appendix E
U.S. Geological Survey Data Series 862 - Methods

BCO-DMO Processing Notes
- Generated from original file: "HLY1202_MICA.csv" contributed by Lisa Robbins
- Parameter names edited to conform to BCO-DMO naming convention found at Choosing Parameter Name
- Single Date/Time field split into separate Date and Time fields
- Date reformatted from MM/DD/YYYY to YYYYMMDD
- Time reformatted from HH:MM to HHMM
- Duplicate Date/Time column deleted

Data Files

File
MICA.csv (Comma Separated Values (.csv), 113.86 KB) MD5:87e47a306e576cda15888bb4cf34f727 Primary data file for dataset ID 528022

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Arctic Sciences	PLR-1220032

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
HLY1202		2012-08-26	USCGC Healy	Dr Larry A. Mayer (Chief Scientist) Dr Andrew A. Armstrong (Co-Chief Scientist)	data info

Instruments

Multi-parameter Inorganic Carbon Analyzer

Supplied Name: MICA

Supplied Description:

Instrument Type

Generic Name: Multi-parameter Inorganic Carbon Analyzer

Acronym: MICA

Generic Description:

The Multi-parameter Inorganic Carbon Analyzer (MICA) developed in the USF/College of Marine Science is an autonomous multi-parameter flow-through CO2 system capable of simultaneously measuring pH, carbon dioxide fugacity (fCO2), atmospheric carbon dioxide partial pressure (pCO2), and the total dissolved inorganic carbon (DIC) of natural water.

Multiparameter Inorganic Carbon Analyzer (MICA)

Pump - Surface Underway Ship Intake

Supplied Name: pump-ship intake

Supplied Description:

Instrument Type

Generic Name: Pump - Surface Underway Ship Intake

Acronym: Pump-Ship Intake

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/31/

Generic Description:

The 'Pump-underway ship intake' system indicates that samples are from the ship's clean water intake pump. This is essentially a surface water sample from a source of uncontaminated near-surface (commonly 3 to 7 m) seawater that can be pumped continuously to shipboard laboratories on research vessels. There is typically a temperature sensor near the intake (known as the hull temperature) to provide measurements that are as close as possible to the ambient water temperature. The flow from the supply is typically directed through continuously logged sensors such as a thermosalinograph and a fluorometer. Water samples are often collected from the underway supply that may also be referred to as the non-toxic supply. Ideally the data contributor has specified the depth in the ship's hull at which the pump is mounted.

Sea-Bird SBE 45 MicroTSG Thermosalinograph

Supplied Name: SBE 45 MicroTSG

Supplied Description:

Salt content in Practical Salinity Units measured using the USCGC Healy's SBE45 instrument.

Instrument Type

Generic Name: Sea-Bird SBE 45 MicroTSG Thermosalinograph

Acronym: SBE 45 MicroTSG

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0190/

Generic Description:

A small externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. It is constructed of plastic and titanium to ensure long life with minimum maintenance. It may optionally be interfaced to an external SBE 38 hull temperature sensor.

Sea Bird SBE 45 MicroTSG (Thermosalinograph)

Sea-Bird SBE 49 FastCAT CTD Sensor

Supplied Name: SBE-49

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 49 FastCAT CTD Sensor

Acronym: SBE-49

Generic Description:

The SBE 49 FastCAT is a CTD sensor for use in autonomous platforms. It contains a SBE 3P temperature sensor, a SBE 4C conductivity sensor and a strain-gauge pressure sensor as standard. It can operate in autonomus (16 Hz per sec) or polled mode (transmits each sample). The sensor is depth-rated to 350 m (plastic housing) or 7000 m (titanium housing). Accuracy: +/- 0.002 deg C (temperature), +/- 0.0003 S/m (conductivity), 0.1% of full scale range (pressure).

Sea-Bird SBE-3 Temperature Sensor

Supplied Name: SBE-3 Temperature

Supplied Description:

Seawater Surface Temperature degrees Celsius measured using the USCGC Healy's SBE3 remote temperature probe. This value is the sea surface temperature

Instrument Type

Generic Name: Sea-Bird SBE-3 Temperature Sensor

Acronym: SBE-3 Temperature

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/134/

Generic Description:

The SBE-3 is a slow response, frequency output temperature sensor manufactured by Sea-Bird Electronics, Inc. (Bellevue, Washington, USA). It has an initial accuracy of +/- 0.001 degrees Celsius with a stability of +/- 0.002 degrees Celsius per year and measures seawater temperature in the range of -5.0 to +35 degrees Celsius. more information from Sea-Bird Electronics

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Date	Date in Coordinated Universal Time (UTC); NIST	YYYYMMDD	date
Time	Time in Coordinated Universal Time (UTC); NIST	HHMM	time
Latitude	Latitude (South is negative); WGS 84	decimal degrees	lat
Longitude	Longitude (West is negative); WGS 84	decimal degrees	lon
TSG_Salinity	Salt content in Practical Salinity Units measured using the USCGC Healy's SBE45 instrument.	PSU	sal_ss
SST	Seawater Surface Temperature degrees Celsius measured using the USCGC Healy's SBE3 remote temperature probe. This value is the sea surface temperature	Degs Celsius	SST
CT	Total amount of inorganic carbon present in seawater in micromoles per kilogram	micromole/kilogram	no_bcodmo_term
pH	pH at 25C (Total scale)	total scale	pH

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Database

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Dataset: MICA