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Dataset Overview | National Centers for Environmental Information (NCEI)

Gas Tension Device (GTD) and Conductivity-Temperature-Depth (CTD) data from the HALE-ALOHA Mooring of the Hawaii Ocean Time-series (HOT) Database during 1997-1998 in the North Pacific 100 miles North of Oahu, Hawaii (NCEI Accession 9900214)

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The HOT program makes repeated observations of the physics, biology and chemistry at a site approximately 100 km north of Oahu, Hawaii. In support of the quasi-monthly shipboard work, the HALE-ALOHA mooring was installed in January 1997. The name is derived from the Hawaii Air-sea Logging Experiment (HALE, or house in Hawaiian language) ALOHA (A Long-term Oligotrophic Habitat Assessment). This CTD/GTD device was placed at 50 m depth in each mooring cycle. The device consists of a Seabird Seacat 16DO CTD capable of measuring temperature, salinity, pressure and oxygen. Attached to this CTD is a gas tension device (GTD) designed and built by Dr. Bruce Johnson at Dalhousie University in Halifax, Nova Scotia, Canada. The GTD deployed at 50 m, provides a novel method of inferring dissolved N2 and O2 gas concentrations in seawater based on a local measurement of gas tension, water temperature and salinity. This data set ends in April 1998.
  • Cite as: Lukas, Roger; Karl, David; University of Hawaii (2002). Gas Tension Device (GTD) and Conductivity-Temperature-Depth (CTD) data from the HALE-ALOHA Mooring of the Hawaii Ocean Time-series (HOT) Database during 1997-1998 in the North Pacific 100 miles North of Oahu, Hawaii (NCEI Accession 9900214). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9900214. Accessed [date].
gov.noaa.nodc:9900214
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Distribution Formats
  • ASCII
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 1997-01-13 to 1998-04-18
Spatial Bounding Box Coordinates
West: -158.08
East: -158.08
South: 22.4
North: 22.4
Spatial Coverage Map
General Documentation
Associated Resources
  • Physical and biochemical oceanographic data from the Hawaii Ocean Time-series (HOT) program collected by University of Hawaii at Station ALOHA in the Pacific Ocean 100 miles north of Oahu, Hawaii, since 1988
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:Station-ALOHA-HOT
Publication Dates
  • publication: 2002-11-19
  • revision: 2023-02-16
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Note: Metadata for this accession were extracted from a legacy database maintained by the U.S. National Oceanographic Data Center (NODC). The design of the database did not exactly reflect the FGDC Content Standard for Digital Geospatial Metadata (CSDGM).

Principal Investigator (PI) and organization contact information accurately represents all available information from the legacy database at the time that this description was created. However, proper attribution of a PI to a specific institution or the role (submitting or collecting) taken by an institution may not be correct due to inexact mapping between fields in the legacy database and the CSDGM. Due to this uncertainty, the contact information was initially recorded in the Supplemental Information element of the CSDGM description.

To develop more accurate metadata, NCEI reviews metadata for all accessions on an ongoing basis.

Points of contact for this data set include:
Contact info:
Agency: UNIVERSITY OF HAWAII
PI: N/A
Address:
address: 2525 CORREA ROAD, HIG331
city: HONOLULU
state: HI
postal: 96822
country: UNITED STATES
Purpose The objective is to support studies of the earth as a system of interrelated physical, chemical, and biological processes that act together to regulate the habitability of our plantet. The first goal is to understand the earth-ocean-atmosphere system and how it functions. The second goal is to describe, and eventually predict, major cause-and-effect relationships. The former goal is focused on physical oceanographic processes and the latter on biogeochemical proceses. The objective of the physical component of HOT is to describe and understand the ocean climate and variability at a deep-water site in the North Pacific subtropical gyre near Hawaii. This requires a long time series of physical oceanographic variables, including water mass properties and currents, supporting and complementing the objectives of the biogeochemical component of HOT. The objective of the biogeochemical component is summed up in the acronym Station ALOHA (A Long-term Oligotrophic Habitat Assessment) as well as its part in the larger picture (ocean-atmosphere-earth system).
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Lukas, Roger; Karl, David; University of Hawaii (2002). Gas Tension Device (GTD) and Conductivity-Temperature-Depth (CTD) data from the HALE-ALOHA Mooring of the Hawaii Ocean Time-series (HOT) Database during 1997-1998 in the North Pacific 100 miles North of Oahu, Hawaii (NCEI Accession 9900214). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9900214. Accessed [date].
Cited Authors
Principal Investigators
Collaborators
Contributors
Resource Providers
Publishers
Acknowledgments
  • HOT was initiated and funded through grants from the National Science Foundation under the auspices of the Joint Global Ocean Flux Study (JGOFS) and the World Ocean Circulation Experiment (WOCE). The field phase of these programs has ended, but support from the Ocean Sciences Division of NSF has enabled continuation of our basic HOT measurement program until mid-2001. The PO component contributes to the objectives of the World Climate Research Programme (WCRP) Climate Variability and Predictability (CLIVAR) Programme by providing information on interannual to decadal variability of the North Pacific Ocean.
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords Originator Platform Names
  • HALE-ALOHA Mooring
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords Originator Instruments
  • Conductivity-Temperature-Depth (CTD)
  • Gas Tension Device (GTD)
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords Originator Mooring Deployments
  • HA-1
  • HA-2
  • HA-3
Originator Project Names
  • Hawaii Air-sea Logging Experiment, A Long-term Oligotrophic Habitat Assessment (HALE-ALOHA)
  • Hawaii Ocean Time-series (HOTS)
  • Joint Global Ocean Flux Study (JGOFS)
  • World Ocean Circulation Experiment (WOCE)
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Lukas, Roger; Karl, David; University of Hawaii (2002). Gas Tension Device (GTD) and Conductivity-Temperature-Depth (CTD) data from the HALE-ALOHA Mooring of the Hawaii Ocean Time-series (HOT) Database during 1997-1998 in the North Pacific 100 miles North of Oahu, Hawaii (NCEI Accession 9900214). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9900214. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2002-11-19T19:40:22Z - NCEI Accession 9900214 v1.1 was published.
  • 2023-02-16T14:19:49Z - NCEI Accession 9900214 was revised and v1.2 was published.
    Rationale: Additional metadata files were received or created for this dataset. These updates were copied into the about/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • CTD
Platform
  • FIXED PLATFORM OF UNITED STATES
Last Modified: 2023-02-16T14:28:58Z
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