International Comprehensive Ocean-Atmosphere Data Set (ICOADS) R3.0 in netCDF format

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This collection contains observations of global ocean meteorological and oceanographic variables, such as sea surface and air temperatures, wind, pressure, humidity, and cloudiness, from many national and international data sources, including ships (merchant, navy, research), moored and drifting buoys, coastal stations, and other marine and near-surface ocean platforms. These observations have been merged to create the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) Release 3.0 (Freeman et al. 2017) and are now available in this collection in the netCDF 4.0 format. The spatial coverage is global and sampling density varies depending on date and geographic position relative to shipping routes and ocean observing systems. The temporal coverage is from 1662 to present and organized by one file per month.

This is the netCDF version of the ICOADS Release 3.0 (R3.0), which is converted from the original IMMA1 format (Smith et al 2017). Useful metadata have been added in the global and variable attributes of each file to make the netCDF self-contained. R3.0 includes changes designed to enable more effective exchange of information describing data quality between ICOADS, reanalysis centers, data set developers, scientists and the public. These user-driven innovations include the assignment of a unique identifier (UID) to each marine report, to enable tracing of observations, linking with reports and improved data sharing. Many new input data and metadata sources have been assembled, and updates and improvements to existing data sources, or removal of erroneous data, made.

References:
Freeman, E., Woodruff, S. D., Worley, S. J., Lubker, S. J., Kent, E. C., Angel, W. E., Berry, D. I., Brohan, P., Eastman, R., Gates, L., Gloeden, W., Ji, Z., Lawrimore, J., Rayner, N. A., Rosenhagen, G. and Smith, S. R. (2017), ICOADS Release 3.0: a major update to the historical marine climate record. Int. J. Climatol., 37: 2211-2232. doi:10.1002/joc.4775.

Smith S.R., E. Freeman, S.J. Lubker, S.D. Woodruff, S.J. Worley, W.E. Angel, D.I. Berry, P. Brohan P, Z. Ji, E.C. Kent, et al., 2017: The International Maritime Meteorological Archive (IMMA) Format [http://icoads.noaa.gov/e-doc/imma/R3.0-imma1.pdf or an abbreviated version is available at: http://icoads.noaa.gov/edoc/imma/R3.0-imma1_short.pdf].
  • Cite as: Wang, Zhankun; US DOC/NOAA/NESDIS > National Centers for Environmental Information (2017). International Comprehensive Ocean-Atmosphere Data Set (ICOADS) R3.0 in netCDF format. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/ICOADS-netCDF. Accessed [date].
  • Please refer to Credit tab for full citation information.
gov.noaa.nodc:ICOADS-netCDF
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Distribution Formats
  • netCDF-4
    • File Specification: ACDD-1.3, CF-1.6, NCEI_NetCDF_Point_Template_v2.0
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 1662-10-15 to Present
Spatial Bounding Box Coordinates
N: 90
S: -90
E: 180
W: -180
Spatial Coverage Map
General Documentation
  • Dataset Description
    Navigate directly to the URL for a descriptive web page with download links.
Associated Resources
  • International Comprehensive Ocean-Atmosphere Data Set
  • ICOADS Release 3.0: a major update to the historical marine climate record
    • doi:10.1002/joc.4775
      Freeman, E., S.D. Woodruff, S.J. Worley, S.J. Lubker, E.C. Kent, W.E. Angel, D.I . Berry, P. Brohan, R. Eastman, L. Gates, W. Gloeden, Z. Ji, J. Lawrimore, N.A. Rayner, G. Rosenhagen, and S.R. Smith, 2017: ICOADS Release 3.0: A major update to the historical marine climate record. Int. J. Climatol. (CLIMAR-IV Special Issue), 37, 2211-2237 (doi:10.1002/joc.4775)
  • Documentation for the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) R3.0 conversion from IMMA1 to netCDF format (NCEI Accession 0162250)
  • The International Maritime Meteorological Archive (IMMA) Format
Publication Dates
  • publication: 2017-04-04
  • revision: 2019-04-13
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Ongoing - data is continually being updated
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
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: Wang, Zhankun; US DOC/NOAA/NESDIS > National Centers for Environmental Information (2017). International Comprehensive Ocean-Atmosphere Data Set (ICOADS) R3.0 in netCDF format. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/ICOADS-netCDF. Accessed [date].
  • and also cite as: Freeman, E., S.D. Woodruff, S.J. Worley, S.J. Lubker, E.C. Kent, W.E. Angel, D.I . Berry, P. Brohan, R. Eastman, L. Gates, W. Gloeden, Z. Ji, J. Lawrimore, N.A. Rayner, G. Rosenhagen, and S.R. Smith, 2017: ICOADS Release 3.0: A major update to the historical marine climate record. Int. J. Climatol. (CLIMAR-IV Special Issue), 37, 2211-2237. https://doi.org/10.1002/joc.4775
Cited Authors
Processors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Conversion of ICOADS data from IMMA1 to netCDF format by NCEI is supported by the NOAA Big Earth Data Initiative (BEDI).
Theme keywords NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • aerology
  • marineMeteorology
  • meteorology
  • oceanography
  • weatherObservations
ICOADS Variable Long Names
  • Air Temperature
  • Alkalinity
  • Alkalinity Depth
  • Automatic Weather Station Indicator
  • Background Air Temperature
  • Background Day
  • Background Hour
  • Background Month
  • Background Relative Humidity
  • Background SST
  • Background Sea Level Pressure
  • Background Wind U Component
  • Background Wind V Component
  • Background Year
  • Barometer Type
  • Bulletin ID
  • Change Code
  • Characteristics of Pressure Tendency
  • Cloud Height
  • Cloud Height Indicator
  • Collecting Center
  • Concentration of Sea Ice
  • Country Code
  • Country Code 2
  • Country of Register
  • Deck
  • Departure from Maximum Height of Cargo Above Max Summer Load Line
  • Derived Relative Humidity
  • Derived Wind U Component
  • Derived Wind V Component
  • Dew Point Temperature
  • Dew Point Temperature Indicator
  • Dissolved Inorganic Carbon
  • Dissolved Inorganic Carbon Depth
  • Dissolved Oxygen
  • Dissolved Oxygen Depth
  • Duplicate Check
  • Duplicate Status
  • Duration of Precipitation
  • Extended Cloud Reconstructions High Cloud Amount
  • Extended Cloud Reconstructions High Cloud Type
  • Extended Cloud Reconstructions Low Cloud Amount
  • Extended Cloud Reconstructions Low Cloud Height
  • Extended Cloud Reconstructions Low Cloud Type
  • Extended Cloud Reconstructions Middle Cloud Amount
  • Extended Cloud Reconstructions Middle Cloud Type
  • Extended Cloud Reconstructions NOL High Cloud Amount
  • Extended Cloud Reconstructions NOL Middle Cloud Amount
  • Extended Cloud Reconstructions Present Weather
  • Extended Cloud Reconstructions Total Cloud Amount
  • FM SHIP Code Version
  • Feedback Source
  • Height of Air Temperature Sensor
  • Height of Anemometer
  • Height of Barometer
  • Height of Visual Observation Platform
  • High Cloud Type
  • Hour
  • Hygrometer Exposure
  • Hygrometer Type
  • IMMT Version
  • IMO Number
  • Ice Accretion On Ship
  • Ice Edge Bearing
  • Ice of Land Origin
  • Ice trend
  • Identification
  • Identification Indicator
  • Intermediate Reject Flag
  • Kind of Vessel
  • Latitude
  • Latitude Longitude Indicator
  • Longitude
  • Low Cloud Amount
  • Low Cloud Type
  • Maximum Height of Cargo Above Max Summer Load Line
  • Metadata Source
  • Middle Cloud Type
  • Model Surface Height
  • Model Surface Type
  • National Source Indicator
  • National Use
  • Night/Day Flag
  • Nitrate
  • Nitrate Depth
  • Observation Platform
  • Observation Source
  • One Degree Box Number
  • PH
  • PH Depth
  • Partial Pressure of Carbon Dioxide
  • Partial Pressure of Carbon Dioxide Depth
  • Past Weather
  • Past Weather 2
  • Phosphate
  • Phosphate Depth
  • Platform Type Indicator
  • Precipitation Amount
  • Precipitation Indicator
  • Present Weather
  • Pressure Bias
  • Pressure Tendency
  • Provider's Unique Record Identification
  • Rate of Ice Accretion on Ship
  • Recruiting Country
  • Relative Humidity
  • Relative Humidity Indicator
  • Relative Lunar Illuminance
  • Relative Wind Direction
  • Relative Wind Speed
  • SST 2
  • SST Depth
  • SST Depth 2
  • SST Method
  • Salinity
  • Salinity Depth
  • Screen Location
  • Sea Level Pressure
  • Sea Surface Temperature
  • Sea Surface Temperature Method Indicator
  • Ship Type
  • Ship's Course
  • Ship's Course Over Ground
  • Ship's Heading
  • Ship's Speed
  • Ship's Speed Over Ground
  • Silicate
  • Silicated Depth
  • Sky Brightness Indicator
  • Solar Altitude
  • Source
  • Source Exclusion Flag
  • Source Metadata Element
  • Source Metadata File
  • Source Metadata Format Version
  • Stage of Development of Sea Ice
  • Swell Direction
  • Swell Direction 2
  • Swell Height
  • Swell Height 2
  • Swell Period
  • Swell Period 2
  • Swell Period Indicator
  • Temperature Indicator
  • Ten Degree Box Number
  • Thermometer Exposure
  • Thermometer Type
  • Thickness of Ice Accretion On Ship
  • Time Indicator
  • Time Period Displacement
  • Total Chlorophyll
  • Total Chlorophyll Depth
  • Total Cloud Amount
  • Track Check
  • Unique Report ID
  • Vessel Length
  • Visibility
  • Visibility Indicator
  • Wave Direction
  • Wave Height
  • Wave Measurement Indicator
  • Wave Period
  • Wave Period Indicator
  • Weather Indicator
  • Wet Bulb Temperature
  • Wet Bulb Temperature Indicator
  • Wind Direction
  • Wind Direction Indicator
  • Wind Speed
  • Wind Speed Indicator
  • date in YYYYMMDD
  • time
NetCDF Climate and Forecast (CF) Metadata Convention Standard Name Table
  • air_pressure_at_sea_level
  • air_temperature
  • cloud_area_fraction
  • cloud_base_altitude
  • dew_point_temperature
  • latitude
  • longitude
  • low_type_cloud_area_fraction
  • mass_concentration_of_chlorophyll_in_sea_water
  • mole_concentration_of_dissolved_inorganic_carbon_in_sea_water
  • mole_concentration_of_nitrate_in_sea_water
  • mole_concentration_of_phosphate_in_sea_water
  • mole_concentration_of_silicate_in_sea_water
  • sea_surface_swell_wave_period
  • sea_surface_swell_wave_significant_height
  • sea_surface_temperature
  • sea_surface_wave_from_direction
  • sea_surface_wind_wave_period
  • sea_surface_wind_wave_significant_height
  • sea_water_alkalinity_expressed_as_mole_equivalent
  • sea_water_ph_reported_on_total_scale
  • sea_water_salinity
  • sea_water_temperature
  • surface_carbon_dioxide_partial_pressure_difference_between_air_and_sea_water
  • tendency_of_surface_air_pressure
  • time
  • visibility_in_air
  • volume_fraction_of_oxygen_in_sea_water
  • wet_bulb_temperature
  • wind_from_direction
  • wind_speed
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords
  • BUOYS
  • C-MAN > Coastal Marine Network
SeaDataNet Ship and Platform Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
  • CTD > Conductivity, Temperature, Depth
  • DRIFTING BUOYS
  • MBT > Mechanical Bathythermographs
  • TIDE GAUGES
  • XBT > Expendable Bathythermographs
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • GEOGRAPHIC REGION > GLOBAL OCEAN
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords
  • ICOADS > International Comprehensive Ocean Atmosphere Data Set
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Wang, Zhankun; US DOC/NOAA/NESDIS > National Centers for Environmental Information (2017). International Comprehensive Ocean-Atmosphere Data Set (ICOADS) R3.0 in netCDF format. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/ICOADS-netCDF. Accessed [date].
  • and also cite as: Freeman, E., S.D. Woodruff, S.J. Worley, S.J. Lubker, E.C. Kent, W.E. Angel, D.I . Berry, P. Brohan, R. Eastman, L. Gates, W. Gloeden, Z. Ji, J. Lawrimore, N.A. Rayner, G. Rosenhagen, and S.R. Smith, 2017: ICOADS Release 3.0: A major update to the historical marine climate record. Int. J. Climatol. (CLIMAR-IV Special Issue), 37, 2211-2237. https://doi.org/10.1002/joc.4775
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: series
Processing Steps
  • 2017-04-04T19:04:22Z - NCEI Accession 0162250 v1.1 was published.
  • 2017-04-18T23:39:07Z - NCEI Accession 0162281 v1.1 was published.
  • 2017-04-19T20:52:13Z - NCEI Accession 0162372 v1.1 was published.
  • 2017-04-19T21:36:07Z - NCEI Accession 0162373 v1.1 was published.
  • 2017-04-19T21:36:12Z - NCEI Accession 0162374 v1.1 was published.
  • 2017-04-19T21:37:08Z - NCEI Accession 0162375 v1.1 was published.
  • 2017-04-19T21:38:13Z - NCEI Accession 0162376 v1.1 was published.
  • 2017-04-19T21:41:11Z - NCEI Accession 0162377 v1.1 was published.
  • 2017-04-19T21:45:34Z - NCEI Accession 0162378 v1.1 was published.
  • 2017-04-19T21:50:32Z - NCEI Accession 0162379 v1.1 was published.
  • 2017-04-19T21:58:09Z - NCEI Accession 0162380 v1.1 was published.
  • 2017-04-19T22:06:11Z - NCEI Accession 0162381 v1.1 was published.
  • 2017-04-19T22:14:10Z - NCEI Accession 0162382 v1.1 was published.
  • 2017-04-19T22:27:10Z - NCEI Accession 0162383 v1.1 was published.
  • 2017-04-19T22:46:09Z - NCEI Accession 0162384 v1.1 was published.
  • 2017-04-19T23:25:10Z - NCEI Accession 0162385 v1.1 was published.
  • 2017-04-20T00:52:16Z - NCEI Accession 0162386 v1.1 was published.
  • 2017-04-20T01:12:12Z - NCEI Accession 0162387 v1.1 was published.
  • 2017-04-20T01:45:25Z - NCEI Accession 0162388 v1.1 was published.
  • 2017-04-20T03:38:24Z - NCEI Accession 0162389 v1.1 was published.
  • 2017-04-20T04:14:06Z - NCEI Accession 0162390 v1.1 was published.
  • 2017-04-20T04:59:33Z - NCEI Accession 0162392 v1.1 was published.
  • 2017-04-20T06:20:36Z - NCEI Accession 0162398 v1.1 was published.
  • 2017-04-20T08:00:42Z - NCEI Accession 0162399 v1.1 was published.
  • 2017-04-20T10:34:41Z - NCEI Accession 0162400 v1.1 was published.
  • 2017-04-26T02:08:29Z - NCEI Accession 0162401 v1.1 was published.
  • 2017-05-03T20:12:27Z - NCEI Accession 0162483 v1.1 was published.
  • 2017-05-04T02:18:27Z - NCEI Accession 0162484 v1.1 was published.
  • 2017-05-04T17:06:03Z - NCEI Accession 0162489 v1.1 was published.
  • 2017-05-05T04:52:22Z - NCEI Accession 0162491 v1.1 was published.
  • 2017-05-05T19:31:54Z - NCEI Accession 0162497 v1.1 was published.
  • 2017-05-06T07:18:28Z - NCEI Accession 0162500 v1.1 was published.
  • 2017-05-07T07:53:53Z - NCEI Accession 0162505 v1.1 was published.
  • 2017-05-29T11:06:43Z - NCEI Accession 0162505 was revised and v2.2 was published.
  • 2017-06-12T08:16:37Z - NCEI Accession 0162505 was revised and v3.3 was published.
  • 2017-07-09T08:18:40Z - NCEI Accession 0162505 was revised and v4.4 was published.
  • 2017-08-09T08:20:15Z - NCEI Accession 0162505 was revised and v5.5 was published.
  • 2017-09-09T07:55:19Z - NCEI Accession 0162505 was revised and v6.6 was published.
  • 2017-10-09T10:10:35Z - NCEI Accession 0162505 was revised and v7.7 was published.
  • 2017-11-10T08:28:50Z - NCEI Accession 0162505 was revised and v8.8 was published.
  • 2017-12-09T08:31:58Z - NCEI Accession 0162505 was revised and v9.9 was published.
  • 2018-02-08T08:33:50Z - NCEI Accession 0162505 was revised and v10.10 was published.
  • 2018-02-11T08:39:58Z - NCEI Accession 0162505 was revised and v11.11 was published.
  • 2018-03-09T08:16:32Z - NCEI Accession 0162505 was revised and v12.12 was published.
  • 2018-04-10T13:09:17Z - NCEI Accession 0162505 was revised and v13.13 was published.
  • 2018-05-09T08:13:28Z - NCEI Accession 0162505 was revised and v14.14 was published.
  • 2018-05-27T11:13:09Z - NCEI Accession 0162505 was revised and v15.15 was published.
  • 2018-06-10T11:36:00Z - NCEI Accession 0162505 was revised and v16.16 was published.
  • 2018-07-09T11:26:13Z - NCEI Accession 0162505 was revised and v17.17 was published.
  • 2018-08-10T08:30:10Z - NCEI Accession 0162505 was revised and v18.18 was published.
  • 2018-08-27T09:13:53Z - NCEI Accession 0162505 was revised and v19.19 was published.
  • 2018-09-09T08:31:07Z - NCEI Accession 0162505 was revised and v20.20 was published.
  • 2018-10-11T22:48:30Z - NCEI Accession 0162505 was revised and v21.21 was published.
  • 2018-11-09T19:43:57Z - NCEI Accession 0162505 was revised and v22.22 was published.
  • 2018-12-17T03:49:47Z - NCEI Accession 0162505 was revised and v23.23 was published.
  • 2019-02-17T11:28:41Z - NCEI Accession 0162505 was revised and v24.24 was published.
  • 2019-03-01T10:40:30Z - NCEI Accession 0162505 was revised and v25.25 was published.
  • 2019-03-22T10:13:16Z - NCEI Accession 0162505 was revised and v26.26 was published.
  • 2019-04-09T10:33:10Z - NCEI Accession 0162505 was revised and v27.27 was published.
  • 2019-04-13T10:14:22Z - NCEI Accession 0162505 was revised and v28.28 was published.
Output Datasets
Acquisition Information (collection)
Instrument
  • bathythermograph - MBT
  • bathythermograph - XBT
  • buoy - drifting buoy
  • buoy - moored buoy
  • CTD
  • Glider
  • profiling floats
  • tide gauge
Platform
  • DRIFTING BUOY
  • FIXED PLATFORM
  • FIXED STATIONS
  • ICE STATION
  • LIGHT VESSELS
  • Moored Buoy
  • MULTIPLE SHIPS
Last Modified: 2019-04-13T11:04:14Z
For questions about the information on this page, please email: NODC.DataOfficer@noaa.gov