gov.noaa.nodc:9500149 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 2025-03-31T21:01:24Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) ALACE subsurface drifter data in South Pacific, for March 1995 (NCEI Accession 9500149) 2002-11-19 publication 2013-03-19 revision 1995 creation NOAA National Centers for Environmental Information gov.noaa.nodc:9500149 NCEI Archive Management System 9500149 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 Jeffrey T. Sherman Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information resourceProvider Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information resourceProvider Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information contributor Alaska State Department of Fish and Game - Kodiak contributor Sherman, Jeffrey T. Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information author Scripps Institution of Oceanography https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information author tableDigital The ALACE (Autonomous LAgrangian Circulation Explorer) is a subsurface drifter, periodically rising to the surface to relay data to ARGOS. Instrument location is then obtained from ARGOS. An ALACE profiler collects data on ascent and relays a compressed data set to ARGOS. The amount of time spent at its neutrally-buoyant depth, and then at the surface, is variable, dependent upon the deployment site and the main scientific objective of the ALACE. Profiling ALACEs generally complete a cycle every 8-10 days, spending 24 hours at the surface transmitting to ARGOS. This dataset is available to the public for a wide variety of uses including scientific research and analysis. 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 NCEI Accession 9500149 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest 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. Please see journal.txt in the /about directory for additional details on changes made. https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:9500149 Preview graphic PNG 9500149 NCEI ACCESSION NUMBER 1995-11-09 publication BAROMETRIC PRESSURE DEPTH - SENSOR HYDROSTATIC PRESSURE WATER TEMPERATURE theme NODC DATA TYPES THESAURUS bathythermograph - uBT CTD instrument NODC INSTRUMENT TYPES THESAURUS physical theme NODC OBSERVATION TYPES THESAURUS Alaska State Department of Fish and Game - Kodiak Scripps Institution of Oceanography dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Scripps Institution of Oceanography dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS North Atlantic Ocean South Atlantic Ocean South Pacific Ocean 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 > ATMOSPHERE > ATMOSPHERIC PRESSURE EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE 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 BATHYTHERMOGRAPHS 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 > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN OCEAN > PACIFIC OCEAN > SOUTH 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 accessLevel: public otherRestrictions Cite as: Sherman, Jeffrey T.; Scripps Institution of Oceanography (2002). ALACE subsurface drifter data in South Pacific, for March 1995 (NCEI Accession 9500149). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9500149. 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 climatologyMeteorologyAtmosphere -155.26 10.48 -70.46 35.12 1995-03-01 1995-03-22 DEPTH-AVERAGING A profile is taken on ascent, with T sampled every 3 s while ALACE is ascending at 10-15 cm/s. The data is depth-averaged and compressed for transmission through ARGOS. The degree of averaging increases with depth. For instance, a profile might start out with 5 m resolution from 0-200 m depth, switching to 10 m resolution from 200-800 m, followed by 20 m resolution to 1200 m. SENSOR DESCRIPTION TEMPERATURE: A thermistor bead from YSI (YSI-44016) is used, having a typical drift of <0.01 deg. C over 1 year, increasing to 0.02 deg. C over 8 years. Laboratory calibration of thermistors typically have less than 0.002 deg. C standard deviation. The largest error comes from the 12-bit a/d (Linear Technology's LTC1290) which resolves T to 0.01-0.02 deg C, with better resolution obtained at low temperatures. PRESSURE: A Paines 210-38 with 0-3000 PSI range is used. Quoted accuracy from thermal drift, non-linearity, hysteresis, and repeatability is ~10 dBar. Observations of a few units in laboratory testing suggest an accuracy of ~5 dBar. OTHER PROFILING ALACEs: At this time, there are a few CTD ALACEs. Sampling and data format are the same as the temperature profiler, with the addition of conductivity also being transmitted. The units have not been thoroughly tested for long-term accuracy, and thus their data sets are not ready for release. SUBSURFACE DRIFT RATE The difference in locations between profiles includes the subsurface drift and the 24 hour surface drift in one complete ALACE cycle. Therefore the NODC data set itself could be used to estimate deep currents, but accuracy would be limited by the unknown surface drift. Dr. Davis uses a fairly sophisticated algorithm to extrapolate the surface drift from the set of ARGOS fixes for the 24 hours ALACE is transmitting. I believe Russ Davis's intent is to provide temperature profiles in the same format as the NODC XBT data set, so people can readily use the ALACE data without requiring any further programming. 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 1.94 https://www.ncei.noaa.gov/archive/accession/9500149 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/9500149 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/9500149 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0001/9500149/ 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 9500149 v1.1 was published. 2002-11-19T19:40:22Z NCEI Accession 9500149 v1.1 publication https://www.ncei.noaa.gov/archive/accession/9500149/1.1 HTTPS NCEI Accession 9500149 v1.1 published 2002-11-19T19:40:22Z download NCEI Accession 9500149 was revised and v1.2 was published. 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. 2013-03-19T17:48:14Z NCEI Accession 9500149 v1.2 publication https://www.ncei.noaa.gov/archive/accession/9500149/1.2 HTTPS NCEI Accession 9500149 v1.2 published 2013-03-19T17:48:14Z 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 bathythermograph - uBT bathythermograph - uBT Micro BathyThermograph CTD CTD Conductivity-Temperature-Depth probe