gov.noaa.nodc:0305618 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 2025-11-13T13:19:21Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Ocean temperature, salinity, current velocity, and temperature variance dissipation collected from EM-APEX floats during the SQUID project from 2023-02-19 to 2024-09-18 (NCEI Accession 0305618) 2025-07-09 publication 2025-06-25 creation International DOI Foundation (IDF) 10.25921/k99s-nm36 NOAA National Centers for Environmental Information gov.noaa.nodc:0305618 NCEI Archive Management System 0305618 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 Aurélie Moulin Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) amoulin@coas.oregonstate.edu http://ceoas.oregonstate.edu/ HTTP Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) website Institution web page information resourceProvider University of Washington, Applied Physics Laboratory (APL) http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information resourceProvider Aurélie Moulin University of Washington, Applied Physics Laboratory (APL) amoulin@uw.edu http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information pointOfContact James Girton University of Washington, Applied Physics Laboratory (APL) girton@uw.edu http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information principalInvestigator Girton, James University of Washington Applied Physics Laboratory http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information author Moulin, Aurélie University of Washington Applied Physics Laboratory amoulin@coas.oregonstate.edu http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information author Mayorga, Emilio University of Washington Applied Physics Laboratory http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information author tableDigital Collection of temperature, salinity, ocean currents, and temperature variance dissipation (chi) profiles gridded on 1-meter pressure levels from profiling EM-APEX floats deployed in all ocean basins during the Sampling Quantitative Internal Waves Distribution (SQUID) experiment funded by the National Science Foundation as part of the Global Internal Waves project of the National Oceanographic Partnership Program (NOPP). There are 5 NetCDF files included in this package and are described in the readme.txt provided. A new observational program, SQUID (Sampling QUantitative Internal-wave Distributions), aims to improve the broad-scale characterization of internal-wave climates through global deployments of autonomous profiling floats measuring shear, strain, and turbulent mixing (using a burst-sampling approach to separate internal waves from low-frequency motions). At the same time, SQUID is compiling and sharing past datasets from velocity profiling floats and, along with other teams in the new NOPP Global Internal Waves initiative, working to transition observational results into model validation metrics and subgrid-scale mixing parameterizations. Funding Agency: National Science Foundation (NSF) 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:0305618 Preview graphic PNG 0305618 NCEI ACCESSION NUMBER 2025-05-14 publication CURRENT SPEED - EAST/WEST COMPONENT (U) CURRENT SPEED - NORTH/SOUTH COMPONENT (V) DEPTH - OBSERVATION HYDROSTATIC PRESSURE SALINITY water depth WATER DEPTH - AVERAGE WATER TEMPERATURE theme NODC DATA TYPES THESAURUS CTD profiling float thermistor instrument NODC INSTRUMENT TYPES THESAURUS in situ profile theme NODC OBSERVATION TYPES THESAURUS University of Washington, Applied Physics Laboratory dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Indian Ocean Mozambique Channel North Atlantic Ocean North Pacific Ocean South Atlantic Ocean South Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication UWA/APL > Applied Physics Laboratory, University of Washington dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 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 NOPP Global Internal Waves Experiment project Provider Project Names EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 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 Drift eastward velocity of a float while at surface Drift northward velocity of a float while at surface EM-APEX geomagnetic east velocity component EM-APEX geomagnetic north velocity component EM-APEX pressure EM-APEX relative east velocity component EM-APEX relative north velocity component EM-APEX salinity EM-APEX temperature depth-gridded EM-APEX pressure measurements depths of gridded EM-APEX profiles gridded EM-APEX east velocity component gridded EM-APEX north velocity component gridded EM-APEX salinity gridded EM-APEX temperature magnetic variation temperature_variance_dissipation theme Provider Variable Names CTD > Conductivity, Temperature, Depth THERMISTORS > THERMISTORS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 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 APL-UW EM-APEX temperature microstructure system (using Rockland Scientific Inc. FP07 thermistors and interface boards) EM-APEX GPS EM-APEX motionally-induced voltage measurement (with Ag-AgCl electrodes) SeaBird Electronics SBE-41cp CTD instrument Provider Instruments EM-APEX platform Provider Platform Names OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN OCEAN > INDIAN OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 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 BHLPBK Send2NCEI Submission Package ID accessLevel: Public otherRestrictions Cite as: Girton, James; Moulin, Aurélie; Mayorga, Emilio (2025). Ocean temperature, salinity, current velocity, and temperature variance dissipation collected from EM-APEX floats during the SQUID project from 2023-02-19 to 2024-09-18 (NCEI Accession 0305618). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/k99s-nm36. 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. license This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License. SPDX License: Creative Commons Attribution 4.0 International (CC-BY-4.0) Sampling QUantitative Internal-wave Distributions — SQUID 2025 publication https://www.apl.uw.edu/project/project.php?id=squid HTTPS https://www.apl.uw.edu/project/project.php?id=squid SQUID website information University of Washington, Applied Physics Laboratory (APL) http://www.apl.washington.edu/ HTTP University of Washington, Applied Physics Laboratory (APL) website Institution web page information publisher documentDigital crossReference project eng; USA utf8 environment oceans -125.11 152.02 -55.95 37.17 2023-02-19 2024-09-18 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. netCDF netCDF-4 classic model NCEI_NetCDF_TrajectoryProfile_Incomplete_Template_v2.0, ACDD-1.3, CF-1.8 netCDF netCDF-4 classic model NCEI_NetCDF_TrajectoryProfile_Incomplete_Template_v2.0, CF-1.8 1829.296 https://doi.org/10.25921/k99s-nm36 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/305618 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/305618 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0237/0305618/ 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 0305618 v1.1 was published. 2025-07-09T14:30:23Z NCEI Accession 0305618 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0305618/1.1 HTTPS NCEI Accession 0305618 v1.1 published 2025-07-09T14:30:23Z download dataset Parameter or Variable: T (measured); Units: degrees kelvin; Observation Category: in situ; Sampling Instrument: SeaBird Electronics SBE-41cp CTD Parameter or Variable: S (calculated); Units: psu; Observation Category: in situ; Sampling Instrument: SeaBird Electronics SBE-41cp CTD Parameter or Variable: P (measured); Units: decibar; Observation Category: in situ; Sampling Instrument: SeaBird Electronics SBE-41cp CTD Parameter or Variable: U (calculated); Units: meters per second; Observation Category: in situ; Sampling Instrument: EM-APEX motionally-induced voltage measurement (with Ag-AgCl electrodes); Sampling and Analyzing Method: Sanford, T.B., 1971, Motionally induced electric and magnetic fields in the sea. J. Geophys. Res., 76, 3476–3492. Parameter or Variable: V (calculated); Units: meters per second; Observation Category: in situ; Sampling Instrument: EM-APEX motionally-induced voltage measurement (with Ag-AgCl electrodes); Sampling and Analyzing Method: Sanford, T.B., 1971, Motionally induced electric and magnetic fields in the sea. J. Geophys. Res., 76, 3476–3492. Parameter or Variable: Chi1 (calculated); Units: degrees Celsius squared per second; Observation Category: in situ; Sampling Instrument: APL-UW EM-APEX temperature microstructure system (using Rockland Scientific Inc. FP07 thermistors and interface boards) Parameter or Variable: Chi2 (calculated); Units: degrees Celsius squared per second; Observation Category: in situ; Sampling Instrument: APL-UW EM-APEX temperature microstructure system (using Rockland Scientific Inc. FP07 thermistors and interface boards) Parameter or Variable: Usfc (calculated); Units: meters per second; Observation Category: in situ; Sampling Instrument: EM-APEX GPS; Sampling and Analyzing Method: Coordinates differentiation Parameter or Variable: Vsfc (calculated); Units: meters per second; Observation Category: in situ; Sampling Instrument: EM-APEX GPS; Sampling and Analyzing Method: Coordinates differentiation 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 CTD Conductivity-Temperature-Depth probe profiling float profiling float PALACE and other types of profiling drifters any one of several types of free-drifting (floating) instrument packages that measure one or more water column parameters, such as temperature, salinity, etc., along with reporting the date, time, and location of the measurements taken over time. Examples include the P-ALACE or PALACE floats, drifting buoys, etc. thermistor thermistor electronic temperature sensor thermally sensitive resistor