The World Ocean Database (WOD) is the largest uniformly formatted, quality-controlled, publicly available historical subsurface ocean profile database. From Captain Cook's second voyage in 1772 to today's automated Argo floats, global aggregation of ocean variable information including temperature, salinity, oxygen, nutrients, and others vs. depth allow for study and understanding of the changing physical, chemical, and to some extent biological state of the World's Oceans. Browse the bucket via the AWS S3 explorer: https://noaa-wod-pds.s3.amazonaws.com/index.html

The World Ocean Database (WOD) is the world's largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable vs. depth at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. Ocean variables in the WOD include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast and the results are included as flags on each measurement. The WOD contains the data on the originally measured depth levels (observed) and also interpolated to standard depth levels to present a more uniform set of iso-surfaces for oceanographic and climate work. The source of the WOD is more than 20,000 separate archived datasets contributed by institutions, project, government agencies, and individual investigators from the United States and around the world. Each dataset is available in its original form in the National Centers for Environmental Information data archives. All datasets are converted to the same standard format, checked for duplication within the WOD, and assigned quality flags based on objective tests. Additional subjective flags are set upon calculation of ocean climatological mean fields which make up the World Ocean Atlas (WOA) series. The WOD consists of periodic major releases and quarterly updates to those releases. Each major release is associated with a concurrent release of a WOA release, and contains final quality control flags used in the WOA, which includes manual as well as automated steps. Each quarterly update release includes additional historical and recent data and preliminary quality control. The latest major release was WOD 2018 (WOD18), which includes nearly 16 million oceanographic casts, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2017). The WOD presents data in netCDF ragged array format following the Climate and Forecast (CF) conventions for ease of use mindful of space limitations.

The World Ocean Database (WOD) has global ocean observed and standard depth data profiles. The World Ocean Atlas (WOA) has objectively analyzed climatological mean fields on both a quarter-degree and on a one-degree longitude by latitude grids. The gridded analyses are for annual, seasonal, and monthly means of six oceanographic variables: temperature, salinity, dissolved oxygen, nitrate, phosphate, and silicate on standard levels (typically at 102 depths, dependent on data availability). The products were derived at the Ocean Climate Laboratory (OCL) of the National Oceanographic Data Center (NODC). Development of the World Ocean products began in 1982 and they have been updated in 1994, 1998, 2001, 2005, 2009, 2013, 2018 and 2023. The featured products are now based on the 2023 versions. Some products from older version are still unique. The WOD is the world's largest profile collection covering the global ocean and contains measurements from 1800 through 2023. The WOA are climatological grids at fixed depths derived from quality checked WOD profiles. This is a recognized world-wide standard and is often referenced in oceanographic research.

The World Ocean Database (WOD) is the world's most comprehensive and largest collection of world wide in situ oceanographic measurements covering the time period 1772 to present (Mishonov et al. 2024, Garcia et al. 2024). The observations are in an uniform format, quality-controlled, and reproducible from the original data archived at NOAA's NCEI. The data in WOD are searchable via extensive granular metadata including quality control flags. The metadata preserves quality control flags added from data originators if available. Since its inception in 1994, WOD functions as an international FAIR-compliant data sharing resource by the broader global ocean and coastal communities. WOD has been an activity of the International Oceanographic Data and Information Exchange (IODE) as well as the World Data Service for Oceanography of the World Data System (WDS).

The WOD is continuously updated with new or updated data and metadata shared over time by 97 countries. As of December 2024, WOD includes ~3.6 billion observations collected on ~20.6 million casts with up to 27 profiles of the most commonly measured physical and chemical essential ocean variables and plankton. WOD includes in situ measurements of temperature, salinity (conductivity), dissolved oxygen, dissolved inorganic nutrients (phosphate, nitrate, nitrate + nitrite, nitrite, silicate), chlorophyll, alkalinity, pH, partial pressure of carbon dioxide, dissolved inorganic carbon, Tritium, Carbon-13, Carbon-14, Helium-3, Oxygen-18, chlorofluorocarbons (CFC-11, CFC-12, CFC-113), Argon, Helium, Neon, Transmissivity (Beam Attenuation Coefficient), and plankton. Casts include meteorological and sea state observations. The data are web and cloud accessible in interoperable formats including Climate and Forecast compliant ragged-array NetCDF. WOD enables multiuse of the global in situ oceanographic instrumental data record critical for quantifying ocean variability as well as in the development of value-added scientific and socioeconomic data products, information, and services.

The WOD consists of periodic major releases and quarterly updates to those releases. Each major release is associated with a concurrent release of a WOA release, and contains final quality control flags used in the corresponding WOA, which includes manual as well as automated steps. Each quarterly update release includes additional historical and recent data and preliminary quality control. The latest major release was WOD 2023 (WOD23), which includes more than 18.8 million oceanographic casts, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2022).

CORRECTED AND UPDATED VERSION: may break previous downloaded versions. The World Ocean Database (WOD) is the world s largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable vs. depth at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. Ocean variables in the WOD include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast and the results are included as flags on each measurement. The WOD contains the data on the originally measured depth levels (observed) and also interpolated to standar

The World Ocean Database (WOD) is the World's largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. There are nearly million oceanographic casts in the WOD 2018 (WOD18) initial release, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2017). Ocean variables in the WOD18 include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast, the results included as flags on each measurement. The WOD18 presents data in Climate-Forecast netCDF ragged array format for ease of use mindful of space limitations. The WOD18 contains the data on the originally measured depth levels (observed) and interpolated to standard depth levels to present a more uniform iso-surface for oceanographic and climate work. The present accession includes year files for WOD18 (through unique cast 18,604,996) + two updates. The quality flags for the WOD18 are those set during calculation of the World Ocean Atlas 2018.

The World Ocean Database (WOD) is the World's largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. There are more than 15 million oceanographic casts in the WOD 2018 (WOD18) initial release, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2017). Ocean variables in the WOD18 include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast, the results included as flags on each measurement. The WOD18 presents data in Climate-Forecast netCDF ragged array format for ease of use mindful of space limitations.

The World Ocean Database (WOD) has global ocean observed and standard depth data profiles. The World Ocean Atlas (WOA) has objectively analyzed climatological mean fields on both a quarter-degree and on a one-degree longitude by latitude grids. The gridded analyses are for annual, seasonal, and monthly means of six oceanographic variables: temperature, salinity, dissolved oxygen, nitrate, phosphate, and silicate on standard levels (typically at 102 depths, dependent on data availability). The products were derived at the Ocean Climate Laboratory (OCL) of the National Oceanographic Data Center (NODC). Development of the World Ocean products began in 1982 and they have been updated in 1994, 1998, 2001, 2005, 2009, 2013, 2018 and 2023. The featured products are now based on the 2023 versions. Some products from older version are still unique.

The WOD is the world's largest profile collection covering the global ocean and contains measurements from 1800 through 2023. The WOA are climatological grids at fixed depths derived from quality checked WOD profiles. This is a recognized world-wide standard and is often referenced in oceanographic research.

The World Ocean Database (WOD) is the World’s largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. There are more than 13 million oceanographic casts in the WOD 2013 (WOD13) initial release, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2012). Ocean variables in the WOD13 include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast, the results included as flags on each measurement. The WOD13 presents data in Climate-Forecast netCDF ragged array format for ease of use mindful of space limitations. The WOD13 contains the data on the originally measured depth levels (observed) and interpolated to standard depth levels to present a more uniform iso-surface for oceanographic and climate work. The present accession includes year files which contain data which have been added or changed in WOD13 over the last three month period.

The synoptic gridded WOD (SG-WOD) provides 3D world ocean gridded temperature and salinity data in monthly increment from WOD profiles using the Optimal Spectral Decomposition (OSD). The SG-WOD data has the same spatial resolution as WOA2009 (T, S) fields.

The World Ocean Atlas (WOA) is a collection of objectively analyzed, quality controlled temperature, salinity, oxygen, phosphate, silicate, and nitrate means based on profile data from the World Ocean Database (WOD). It can be used to create boundary and/or initial conditions for a variety of ocean models, verify numerical simulations of the ocean, and corroborate satellite data.

This layer uses annual means for all averaged decades years. Each value represents the "objectively analyzed climatologies" - the objectively interpolated mean fields for oceanographic variables at standard depth levels for the World Ocean.

There are 8 different variables available through the World Ocean Atlas.

Temperature (°C) Sallinity (unitless) Oxygen

Dissolved Oxygen (µmol/kg) Apparent Oxygen Utilization (µmol/kg) Percent Oxygen Saturation (%)

Nitrate (µmol/kg) Phosphate (µmol/kg) Silicate (µmol/kg)

There are 102 different depths that range between 0-5,500m that can be accessed using the depth/range slider or queries/filters.

World Ocean Atlas 2018 Source Data: https://www.ncei.noaa.gov/access/world-ocean-atlas-2018/World Ocean Atlas 2018 Product Documentation: https://www.ncei.noaa.gov/sites/default/files/2020-04/woa18documentation.pdf World Ocean Atlas 2013 Source Data: https://www.nodc.noaa.gov/OC5/woa13/World Ocean Atlas 2013 Product Documentation: https://data.nodc.noaa.gov/woa/WOA13/DOC/woa13documentation.pdf

The World Ocean Database (WOD) is the World's largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. There are more than 13 million oceanographic casts in the WOD 2013 (WOD13) initial release, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2012). Ocean variables in the WOD13 include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast, the results included as flags on each measurement. The WOD13 presents data in Climate-Forecast netCDF ragged array format for ease of use mindful of space limitations. The WOD13 contains the data on the originally measured depth levels (observed) and interpolated to standard depth levels to present a more uniform iso-surface for oceanographic and climate work. The present accession includes year files which contain data which have been added or changed in WOD13 over the last three month period.

The World Ocean Database (WOD) is the World s largest publicly available uniform format quality controlled ocean profile dataset. Ocean profile data are sets of measurements of an ocean variable at a single geographic location within a short (minutes to hours) temporal period in some portion of the water column from the surface to the bottom. To be considered a profile for the WOD, there must be more than a single depth/variable pair. Multiple profiles at the same location from the same set of instruments is an oceanographic cast. There are more than 13 million oceanographic casts in the WOD 2013 (WOD13) initial release, from the second voyage of Captain Cook (1772) to the modern Argo floats (end of 2012). Ocean variables in the WOD13 include temperature, salinity, oxygen, nutrients, tracers, and biological variables such as plankton and chlorophyll. Quality control procedures are documented and performed on each cast, the results included as flags on each measurement. The WOD13 presents data in Climate-Forecast netCDF ragged array format for ease of use mindful of space limitations. The WOD13 contains the data on the originally measured depth levels (observed) and interpolated to standard depth levels to present a more uniform iso-surface for oceanographic and climate work. The present accession includes year files which contain data which have been added or changed in WOD13 over the last three month period.

The World Ocean Database (WOD) is world's largest collection of uniformly formatted, quality controlled, publicly available ocean profile data. This dataset is a snapshot of the XBT observations which have been preprocessed for use in a machine learning pipeline.

The data is organised by year in CSV files, covering 1966-2015. This dataset does not include the actual temperature and depth profiles, as this dataset was focused on a project to improve the metadata.

Synoptic monthly gridded Mediterranean Sea temperature (T), salinity (S), and absolute geostrophic velocity (u, v) fields are produced from the NOAA National Centers for Environmental Information (NCEI) World Ocean Database (WOD) (T, S) profiles. The optimal spectral decomposition (OSD) (Chu et al. 2003a, b; 2015) and P vector (Chu 1995) methods are used to establish the synoptic monthly gridded (T, S, u, v) fields with (0.25°×0.25°) horizontal resolution, 57 vertical levels, and monthly increment from January 1960 to December 2013.

The World Ocean Database 1998 is a gobal database containing physical oceanography data, compiled by the WDC-A for Oceanography, Siver Springs. At VLIZ, we extracted data from the North Sea from this database, and created a user interface.

The dataset made available here is the monthly climatology of an estimate of the ocean surface Mixed Layer Depth (MLD) over the global ocean, at 1 degree by 1 degree spatial resolution. This climatology is based on about 7.3 million casts/profiles of temperature and salinity measurements made at sea between January 1970 and December 2021. Those profiles data come from the ARGO program and from the NCEI-NOAA World Ocean Database (WOD, Boyer et al. 2018), including e.g. data from marine mammals or ice-tethered profilers for the high latitudes. Here, the MLD is computed on each individual cast/profile using the threshold criterion method. The depth of the mixed layer is defined as the shallowest depth where the surface potential density of the profile is superior to a reference value (usually taken close to the surface) added with the chosen threshold. In this work, we take a fixed threshold value for the density of 0.03 kg/m3, and a surface reference depth at 5 m. This surface mixed layer is by definition homogeneous in density (up to 0.03 kg/m3 variations) and can also be called an isopycnal layer. The latter value of 5 m for the reference depth differs from the rather usual 10 m value used in de Boyer Montégut et al., 2004 (see dataset at https://www.seanoe.org/data/00806/91774/). It is important to note that this shallower value has been chosen for a specific study dedicated to the Arctic Ocean (Allende et al., submitted to Geoscientific Model Development), where both the presence of ice and a very weak diurnal cycle may lead to MLD shallower than 10 m and possibly lasting for several days or more (which should be rare outside polar latitudes). Differences with the MLD climatology using a 10 m reference depth, are located mostly in the polar high latitudes (poleward of 60 degree) and somehow in the north atlantic in winter. They are rather weak in other places of the global ocean (about less than 10m, MLD with ref depth at 5 m being shallower). This product is rather intended for studies in the polar latitudes (e.g. Arctic ocean with the presence of sea ice), and/or for validation of MLD fields in such areas from Ocean models like Ocean General Circulation Models (e.g. see Allende et al. submitted to Geoscientific Model Development). In any case, we recall that it is important to estimate, as much as possible, the MLD from the model with the same method as in the chosen observed climatology i.e. here with the same criterion values (0.03 kg/m3 threshold, and 5 m reference depth). This dataset (netcdf file) and its more detailed product documentation (pdf file) are produced at LOPS laboratory (associated research unit with following french research institute and university : IFREMER, University of Brest, IUEM, CNRS, and IRD). Those files are available by clicking the download buttons hereunder on this page. Some links to other related climatologies of ocean surface variables (e.g. MLD with other criteria, barrier layer thickness...) can be found at the LOPS-IFREMER MLD webpages : https://cerweb.ifremer.fr/mld, or similarly at : https://www.umr-lops.fr/en/Data/MLD.

The world ocean database (WOD) contains 2,353,142 MBT temperature profiles with the one-to-one data structure, i.e., one file is for one MBT temperature profile. From practical point of view, it is hard to access such huge number of files for data analysis and data assimilation. To make the WOD data easy to use, we merged the WOD/MBT data into one file: MBTall.nc. The MATLAB codes to get the profiles are also developed

The SDC_GLO_CLIM_TS_V1 product contains two different monthly climatologies for temperature and salinity, SDC_GLO_CLIM_TS_V1_1 and SDC_GLO_CLIM_TS_V1_2 from the World Ocean Data (WOD) database. Only the basic quality control flags from the WOD are used. The climatology, V1_1, considers temperature and salinity profiles from Conductivity Depth Temperature (CTD) profilers, Ocean station data (OSD) and Moored buoy data (MRB) along with Profiling Floats (PFL) from 1900 to 2017. The climatology, V1_2, utilizes only PFL data from 2003 to 2017. V1_1 considers depth layers from surface to 6000 m while V1_2 only from 0 to 2000 m. The gridded fields are computed using DIVAnd (Data Interpolating Variational Analysis) version 2.3.1.

The world ocean database (WOD) contains huge number of Ocean Station Data (OSD) during 1800-2017 with the one-to-one data structure, i.e., one file is for one OSD. From practical point of view, it is hard to access such huge number of files for data analysis and data assimilation. To make the WOD/OSD data easy to use, we merged the WOD/OSD data into three files. The MATLAB codes to get the profiles are also developed