Dataset: Inter-comparison 2016: SAMI-alk TA

Name: Total alkalinity from SAMI-alks during an inter-comparison of autonomous in situ instruments for ocean CO2 measurements under laboratory-controlled conditions at Scripps Institution of Oceanography in 2016
Published: 2022-03-01
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.870352.1

Temporal Extent: 2016-08-16 - 2016-08-27

Project:

A new tool for ocean carbon cycle and ocean acidification studies (Bermuda Biochem Timeseries)

Principal Investigator:

Michael DeGrandpre (University of Montana)

Co-Principal Investigator:

Todd R. Martz (University of California-San Diego, UCSD-SIO)

Student:

Qipei Shangguan (University of Montana)

Contact:

Qipei Shangguan (University of Montana)

BCO-DMO Data Manager:

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

Version:

Version Date:

2022-03-01

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Total alkalinity from SAMI-alks during an inter-comparison of autonomous in situ instruments for ocean CO2 measurements under laboratory-controlled conditions at Scripps Institution of Oceanography in 2016

Abstract:

This dataset contains a total alkalinity (TA) time-series measured by three identically designed SAMI-alks (Submersible Autonomous Moored Instrument for Alkalinity). Data was recorded at 1-hour intervals. These data were part of an inter-comparison of autonomous in situ instruments for ocean CO2 measurements under laboratory-controlled conditions at Scripps Institution of Oceanography in August of 2016. These data were published in Shangguan et al. (2022).

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2022-03-01	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.870352.1	2022-03-11

Methods & Sampling

This study used three SAMI-alks with measurement frequency at 1-hour intervals. See references for technical details of the instrument (Shangguan et al., 2022).

Data Processing Description

SAMI-alk data was processed by a custom-made Matlab script. MATLAB scripts convert raw data, which are optical intensities or voltages along with temperature and salinity, into their respective carbonate parameters.

BCO-DMO Data Manager Processing Notes:
* Data from source file "2016 AT sensor.xlsx" Sheet1 were imported into the BCO-DMO data system.
* Parameters (column names) renamed to comply with BCO-DMO naming conventions. See https://www.bco-dmo.org/page/bco-dmo-data-processing-conventions

Data Files

File
sami_alk_2016.csv (Comma Separated Values (.csv), 9.22 KB) MD5:9526616fa9c8a719c2db14660f4209cd Primary data file for dataset ID 870352

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1459255

Deployments

None available yet

Instruments

Submersible Autonomous Moored Instrument

Supplied Name: SAMI-alk

Supplied Description:

AT time-series measured by three identically designed SAMI-alks (Submersible Autonomous Moored Instrument for Alkalinity). Data is recorded at 1-hour interval.

Instrument Type

Generic Name: Submersible Autonomous Moored Instrument

Acronym: SAMI

Generic Description:

The Submersible Autonomous Moored Instrument (SAMI) measures and logs levels of dissolved chemicals in sea and fresh water. It is a plastic cylinder about 6 inches wide and 2 feet long that is self-powered and capable of hourly measurements for up to one year. All data collected are logged to an internal memory chip to be downloaded later. SAMI sensors usually are placed a few feet underwater on permanent moorings, while others on floating drifters sample the water wherever the wind and currents carry them. The instruments have been used by researchers around the globe in a variety of studies since 1999. Dr. Mike DeGrandpre, University of Montana, developed the SAMI between 1990 and 1993 during his postdoctoral work at the Woods Hole Oceanographic Institution (Woods Hole, MA, USA). For additional information, see URL: http://www.sunburstsensors.com/ from the manufacturer, Sunburst Sensors, LLC, 1226 West Broadway, Missoula, MT 59802.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
time	Timestamp with time zone (UTC) in ISO 8601 format YYYY-MM-DDThh:mmZ Format: %Y-%m-%dT%H:%MZ	unitless	ISO_DateTime_UTC
SAMI_alk_00	Total alkalinity from the SAMI-alk sensor<serial number 00>	micromoles per kilogram (umol/kg)	TALK
SAMI_alk_01	Total alkalinity from the SAMI-alk sensor<serial number 01>	micromoles per kilogram (umol/kg)	TALK
SAMI_alk_02	Total alkalinity from the SAMI-alk sensor<serial number 02>	micromoles per kilogram (umol/kg)	TALK

Database

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Dataset: Inter-comparison 2016: SAMI-alk TA