gov.noaa.nodc:0123115 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-03-30T13:38:39Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Deep ocean CTD data 2011-2013 from the Aloha Cabled Observatory (NCEI Accession 0123115) 2014-11-14 publication 2014-11-03 creation NOAA National Centers for Environmental Information gov.noaa.nodc:0123115 NCEI Archive Management System 0123115 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Daniel McCoy University of Hawaiʻi at Mānoa (UHM) demccoy@hawaii.edu https://manoa.hawaii.edu/ HTTPS University of Hawaiʻi at Mānoa (UHM) website Institution web page information resourceProvider University of Hawaiʻi at Mānoa (UHM) https://manoa.hawaii.edu/ HTTPS University of Hawaiʻi at Mānoa (UHM) website Institution web page information resourceProvider University of Hawaiʻi at Mānoa (UHM) https://manoa.hawaii.edu/ HTTPS University of Hawaiʻi at Mānoa (UHM) website Institution web page information contributor McCoy, Daniel University of Hawaiʻi at Mānoa (UHM) demccoy@hawaii.edu https://manoa.hawaii.edu/ HTTPS University of Hawaiʻi at Mānoa (UHM) website Institution web page information author University of Hawaiʻi at Mānoa https://manoa.hawaii.edu/ HTTPS University of Hawaiʻi at Mānoa (UHM) website Institution web page information author tableDigital The ALOHA Cabled Observatory (ACO) is a system of hardware and software that extends electric power and the Internet offshore, supporting sustained real-time observations in the deep ocean. The ACO is connected to Oahu, Hawaii by the HAW-4 telecommunications cable transferred to the project by AT&T in 2007. On June 6th, 2011, the ACO was deployed on the ocean bottom (depth ~ 5 kilometers - 3 miles) near Station ALOHA, 100 kilometers (60 nautical miles) north of Oahu, Hawaii. Station ALOHA is the site of the long-term Hawaii Ocean Time-series (HOT) open ocean measurement program, visited by research vessels 10-12 times each year since October 1988. There are five modules that are connected together on the seafloor. The Junction Box is connected to the HAW-4 cable and to the Observatory module. Together, they supply 1200 watts of power and 100 Megabits per second of Ethernet communications to sensor systems on these two modules, and to the other three modules. The other modules are the Camera tripod, the AMM bottom node, and the TAAM mooring. Sensors provide live video of the ocean bottom around the ACO, sound from local and distant sources, currents, pressure, temperature, and salinity. This data set contains the rapidly sampled CTD data from a SeaBird SBE-37 Microcat during 2011-2013. The initial sampling rate was 1 minute, and it was changed to 1 second on June 27th, 2011, and to 2 seconds on December 28th, 2011. Salinities were calculated using the UNESCO routines. Currents from ADCP are available separately. The project is ongoing with data from 2014 to become available. It is difficult to make sustained measurements in the deep ocean. Systems lowered on cables from research ships can use power from the ship, but ships (and people) cannot remain on station without reprovisioning. Systems that are moored in the ocean can make measurements for a longer period of time, but they are limited by the battery power that can be contained in pressure-resistant cases. Moored measurements are typically not available until the mooring is recovered a year or more after deployment. With a surface buoy and special subsurface cabling, moorings can transmit limited amounts of data by satellite to shore with relatively little delay. The ACO provides continuous power and fast two-way communications between shore and a variety of oceanographic instruments, allowing scientific research to be done continually. These capabilities allow scientists to modify sampling as we learn more about the ocean environment surrounding the ACO. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0123115 Preview graphic PNG 0123115 NCEI ACCESSION NUMBER 2014-02-12 publication CONDUCTIVITY SALINITY SALINITY - BOTTOM WATER WATER TEMPERATURE theme NODC DATA TYPES THESAURUS CTD - moored CTD instrument NODC INSTRUMENT TYPES THESAURUS physical time series water chemistry theme NODC OBSERVATION TYPES THESAURUS University of Hawaiʻi at Mānoa dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Hawaiʻi at Mānoa dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Aloha Cabled Observatory (ACO) project NODC PROJECT NAMES THESAURUS North Pacific Ocean Northeast Pacific Ocean (limit-180) place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian CTD Conductivity (PSS-1978 in Siemens/m) Salinity (1978 International Practical Salinity Scale). Scale of 1990). Temperature (Degrees Celsius, International Temperature physical oceanographic data seafloor measurements time series data theme Originator Keywords CTD > Conductivity, Temperature, Depth instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Aloha Cabled Observatory Hawaii Hawaii Ocean Time Series (HOT) Pacific Station Aloha central north Pacific place Originator Place Names accessLevel: public otherRestrictions Cite as: McCoy, Daniel; University of Hawaiʻi at Mānoa (2014). Deep ocean CTD data 2011-2013 from the Aloha Cabled Observatory (NCEI Accession 0123115). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0123115. Accessed [date]. 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. otherRestrictions 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. eng; USA utf8 environment oceans -158.0062 -158.0062 22.73873 22.73873 2011-06-13 2013-12-31 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact 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. Contact NCEI for other distribution options and instructions. Originator data format 1535.232 https://www.ncei.noaa.gov/archive/accession/0123115 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/123115 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/123115 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0070/0123115/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0123115 v1.1 was published. 2014-11-14T18:03:50Z NCEI Accession 0123115 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0123115/1.1 HTTPS NCEI Accession 0123115 v1.1 published 2014-11-14T18:03:50Z download repository NOAA National Centers for Environmental Information 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. 2015-04-22T00:00:00 asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian CTD - moored CTD CTD - moored CTD CTD - moored CTD