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Dataset Overview | National Centers for Environmental Information (NCEI)

AVHRR Pathfinder version 5.0, interim version 5.0, and version 5.1 global 4km sea surface temperature (SST) data for 1981-2009

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The 4 km Pathfinder effort at the National Oceanic and Atmospheric Administration (NOAA) National Oceanographic Data Center (NODC) and the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) is an extension of, and improvement on, the sea surface temperature (SST) fields from the NOAA/NASA AVHRR Oceans 9km Pathfinder dataset. In this 4 km Pathfinder project, some important shortcomings in the original 9 km data have been corrected, and the entire time series has been reprocessed at the 4 km Global Area Coverage (GAC) level, the highest resolution possible globally. Twice-daily SST and related parameters back to 1981 have been produced, as well as temporal averages for 5-day, 7-day, 8-day, monthly, and yearly periods. In addition, cloud-screened products were developed from these Pathfinder Version 5 data at the NODC, including 5-day cloud-screened full-resolution data, 5-day cloud-screened one-degree binned data, and 5-day cloud-screened gap-filled full-resolution data products. Associated climatologies and region-specific (Gulf of Mexico) GeoTIFF image products were also produced from these data.

This dataset includes the temporally averaged SST data and related parameters available for 1981-2009.

Data and data products for all years and time periods are available as separate NCEI accessions.

These data were collected through the operational periods of the NOAA-7 through NOAA-18 Polar Operational Environmental Satellite (POES).
  • Cite as: Casey, Kenneth S.; Kearns, Edward J.; Halliwell, Vicki; Evans, Robert (2004). AVHRR Pathfinder version 5.0, interim version 5.0, and version 5.1 global 4km sea surface temperature (SST) data for 1981-2009. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/AVHRR_Pathfinder-NODC-v5.0_v5.1. Accessed [date].
  • Please refer to Credit tab for full citation information.
gov.noaa.nodc:AVHRR_Pathfinder-NODC-v5.0_v5.1
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Distribution Formats
  • HDF (Version: HDF-4)
    • File Specification: HDF Scientific Data Set (HDF-SDS)
  • JPEG
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 1981-08-24 to 2009-12-31
Spatial Reference System urn:ogc:def:crs:EPSG::4326
Spatial Bounding Box Coordinates
West: -180
East: 180
South: -90
North: 90
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2004-10-19
  • revision: 2022-01-11
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Originally, the Version 5.0 Pathfinder algorithm was used to produce these twice-daily, 5-day, 7-day, 8-day, monthly, and yearly global SST and related parameters (described below). This algorithm is an improved version of the previously most successful of many methods used to derive SST from AVHRR observations (see Barton (1995) for a review of earlier techniques), the University of Miami Pathfinder version v4.2 SST algorithm (described fully in Kilpatrick et al., 2001).

The v4.2 algorithm offered marked improvement over operational retrieval algorithms such as MCSST and was applied to AVHRR data to maximize accuracy and to minimize artificial fluctuations arising from the sequence of AVHRR instruments flown on NOAA's polar-orbiting satellites during the past 2 decades. The 9 km v4.2 Pathfinder SSTs have already been shown to be the highest quality product currently available for the construction of global climatologies (Casey and Cornillon, 1999) and longer-term SST trend determination (Casey and Cornillon, 2001), and have been demonstrated to be accurate within about 0.3 degrees C under optimal conditions (Kearns et al., 2000). Relative to the older 9 km v4.2 Pathfinder data, the new, ~4 km resolution Pathfinder Version 5.0 global SSTs increase detail roughly by a factor of four simply by virtue of the increased resolution. The increase in detail over widely used but relatively coarse SST datasets such as Optimally Interpolated SST Version 2 (OISSTv2; Reynolds et al., 2002) and the Hadley Centre's Global Sea Ice and SST (HadISST1; Rayner et al., 2003) is far greater.

In addition to the increased resolution, significant improvements have been made in the Version 5.0 which enhance the usefulness of the SST fields. Currently, these enhancements include the use of sea ice in the quality level determination scheme, inclusion of many inland water bodies, and the use of a greatly improved land mask. The greatest improvements are seen in coastal zones, marginal seas, and boundary current regions where SST gradients are often large and their impact on operational or research products is greatest. Separate SST products for daytime and nighttime AVHRR retrievals are made to better understand the differences in skin and bulk temperatures, since mean differences between AVHRR-measured skin temperatures and bulk temperatures of 0.1 to 0.2 degrees C (Schluessel et al., 1990) and locally varying differences of up to 1.8 degrees C (Minnett et al., 2000) have been observed.

In addition to SST values, the Pathfinder V5.0 Project makes six other parameters available, for a total of seven per time step:
1. All-pixel SST - The all-pixel SST files contain values for each pixel location, including those contaminated with clouds or other sources of error. The Overall Quality Flag values may be used to filter out these unwanted values. The SST value in each pixel location is an average of the highest quality AVHRR Global Area Coverage (GAC) observations available in each roughly 4 km bin.
2. First-guess SST - The Pathfinder algorithm uses a first guess SST provided by the Reynolds Optimally Interpolated SST Version 2 (OISSTv2) product. The OISSTv2 is also used in the quality control procedures. For Version 5.1 data (1981-1985), the Reynolds Optimum Interpolation 1/4-degree Daily SST Analysis Version 2 (DOISSTv2) was used in place of the OISSTv2.
3. Number of observations - This parameter indicates the number of AVHRR GAC observations falling in each approximately 4 km bin.
4. Standard deviation - This is the standard deviation of the observations in each 4 km bin.
5. Overall quality flag - The overall quality flag is a relative assignment of SST quality based on a hierarchical suite of tests. The Quality Flag varies from 0 to 7, with 0 being the lowest quality and 7 the highest. For more information regarding the suite of tests, see the Kilpatrick et al. (2001) paper cited above.
6. Mask 1 - These files contain a mask code, which along with Mask 2, can be used to determine the tests in the hierarchical suite that were passed or failed, resulting in the Overall Quality Flag.
7. Mask 2 - These files contain a mask code, which along with Mask 1, can be used to determine the tests in the hierarchical suite that were passed or failed, resulting in the Overall Quality Flag.

The interim SST data (2007-2009) described in this metadata record were produced prior to the derivation of a final set of monthly coefficients for those years. The SST values were therefore calculated using the most recent set of coefficients available, and are considered Interim Pathfinder Version 5.0 data and not part of the Formal Pathfinder Version 5.0 dataset. The algorithm used to create Version 5.1 data (1981-1985) is different only in that it replaces the Reynolds Weekly Optimally Interpolated SST Version 2 (OISSTv2) with the Reynolds Optimum Interpolation 1/4-degree Daily SST Analysis Version 2 (DOISSTv2) as the first guess SST and in the quality control procedures. The primary effect of this change is to retain more data in the high gradient regions and in regions where meandering or feature advection is present; effect on the retrieved SST is minimal.

Note on Pathfinder Program: The Pathfinder program was jointly created by NASA and NOAA through the Earth Observing System (EOS) Program Office in 1990. The focus of the Pathfinder Program was to determine how existing satellite based datasets could be processed and used to study global change. The datasets were designed to be long time-series data processed with stable calibration and community consensus algorithms to better assist the research community. For more information, see: National Aeronautics and Space Administration (NASA). 1993. Earth Observing System (EOS) Reference Handbook, ed. G. Asrar and D. J. Dokken. Washington, D. C.: National Aeronautics and Space Administration, Earth Science Support Office, Document Resource Facility. The 4 km Pathfinder Project effort at the National Oceanic and Atmospheric Administration (NOAA) National Oceanographic Data Center (NODC) and the University of Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) is an extension of and improvement on the sea surface temperature (SST) fields from that original NOAA/NASA AVHRR Oceans Pathfinder program.
Purpose To provide sea surface temperature data and related parameters with good temporal consistency, high accuracy and spatial resolution, and for archive and distribution through the NOAA National Oceanographic Data Center (NODC). This SST data collecton is intended primarily for climate related applications and studies and is being established to help form the basis for a Climate Data Record for SST.
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: Casey, Kenneth S.; Kearns, Edward J.; Halliwell, Vicki; Evans, Robert (2004). AVHRR Pathfinder version 5.0, interim version 5.0, and version 5.1 global 4km sea surface temperature (SST) data for 1981-2009. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/AVHRR_Pathfinder-NODC-v5.0_v5.1. Accessed [date].
  • Please also cite: Casey, K.S., T.B. Brandon, P. Cornillon, and R. Evans (2010). "The Past, Present and Future of the AVHRR Pathfinder SST Program", in Oceanography from Space: Revisited, eds. V. Barale, J.F.R. Gower, and L. Alberotanza, Springer. https://doi.org/10.1007/978-90-481-8681-5_16
Cited Authors
Contributors
Resource Providers
Publishers
Acknowledgments
  • This project was supported in part by a grant from the NOAA Climate Data Record (CDR) Program for satellites.
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
CoRIS Theme Thesaurus
  • EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Satellite (digital scans) > AVHRR
  • EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature > AVHRR
  • EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature
GHRSST Project Science Keywords
  • EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature > AVHRR
  • EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature > AVHRR > 4km Pathfinder
  • EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature > AVHRR > 9km Pathfinder
  • EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature > AVHRR > MCSST
  • EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature > AVHRR > NLSST
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Casey, Kenneth S.; Kearns, Edward J.; Halliwell, Vicki; Evans, Robert (2004). AVHRR Pathfinder version 5.0, interim version 5.0, and version 5.1 global 4km sea surface temperature (SST) data for 1981-2009. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/AVHRR_Pathfinder-NODC-v5.0_v5.1. Accessed [date].
  • Please also cite: Casey, K.S., T.B. Brandon, P. Cornillon, and R. Evans (2010). "The Past, Present and Future of the AVHRR Pathfinder SST Program", in Oceanography from Space: Revisited, eds. V. Barale, J.F.R. Gower, and L. Alberotanza, Springer. https://doi.org/10.1007/978-90-481-8681-5_16
  • Please acknowledge the use of these data with the following statement: These data were provided by GHRSST and the NOAA National Centers for Environmental Information.
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
  • 2004-10-19T05:55:53Z - NCEI Accession 0001814 v1.1 was published.
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  • 2004-10-20T01:55:53Z - NCEI Accession 0001834 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001835 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001835 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001836 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001836 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001837 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001837 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001838 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001838 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001839 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001839 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001840 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001840 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001841 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001841 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001842 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001842 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001843 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001843 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001844 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001844 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001845 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001845 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001846 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001846 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001847 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001847 was revised and v2.2 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001848 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001849 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001850 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001851 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001852 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001853 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001854 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001855 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001856 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001857 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001858 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001859 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001860 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001861 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001862 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001863 v1.1 was published.
  • 2004-10-20T01:55:53Z - NCEI Accession 0001864 v1.1 was published.
  • 2008-07-29T17:16:04Z - NCEI Accession 0043730 v1.1 was published.
  • 2008-07-29T17:16:04Z - NCEI Accession 0043730 was revised and v2.2 was published.
  • 2008-07-29T17:16:29Z - NCEI Accession 0043731 v1.1 was published.
  • 2008-07-29T17:16:40Z - NCEI Accession 0043732 v1.1 was published.
  • 2008-07-29T17:16:40Z - NCEI Accession 0043732 was revised and v2.2 was published.
  • 2008-07-29T17:16:51Z - NCEI Accession 0043733 v1.1 was published.
  • 2008-07-29T17:16:51Z - NCEI Accession 0043733 was revised and v2.2 was published.
  • 2008-07-29T17:16:58Z - NCEI Accession 0043734 v1.1 was published.
  • 2008-07-29T17:16:58Z - NCEI Accession 0043734 was revised and v2.2 was published.
  • 2008-07-29T17:17:18Z - NCEI Accession 0043735 v1.1 was published.
  • 2008-07-29T17:17:25Z - NCEI Accession 0043736 v1.1 was published.
  • 2008-07-29T17:17:25Z - NCEI Accession 0043736 was revised and v2.2 was published.
  • 2008-07-29T17:17:35Z - NCEI Accession 0043737 v1.1 was published.
  • 2008-07-29T17:17:42Z - NCEI Accession 0043738 v1.1 was published.
  • 2008-07-29T17:17:42Z - NCEI Accession 0043738 was revised and v2.2 was published.
  • 2008-07-29T17:17:50Z - NCEI Accession 0043739 v1.1 was published.
  • 2008-07-29T17:17:50Z - NCEI Accession 0043739 was revised and v2.2 was published.
  • 2008-07-29T17:17:57Z - NCEI Accession 0043740 v1.1 was published.
  • 2008-07-29T17:17:57Z - NCEI Accession 0043740 was revised and v2.2 was published.
  • 2008-07-29T17:18:03Z - NCEI Accession 0043741 v1.1 was published.
  • 2008-07-29T17:18:10Z - NCEI Accession 0043742 v1.1 was published.
  • 2008-07-29T17:18:10Z - NCEI Accession 0043742 was revised and v2.2 was published.
  • 2008-07-29T17:18:16Z - NCEI Accession 0043743 v1.1 was published.
  • 2008-07-29T17:18:23Z - NCEI Accession 0043744 v1.1 was published.
  • 2008-07-29T17:18:23Z - NCEI Accession 0043744 was revised and v2.2 was published.
  • 2008-07-29T17:18:43Z - NCEI Accession 0043745 v1.1 was published.
  • 2008-07-29T17:18:43Z - NCEI Accession 0043745 was revised and v2.2 was published.
  • 2008-07-29T17:18:51Z - NCEI Accession 0043746 v1.1 was published.
  • 2008-07-29T17:18:51Z - NCEI Accession 0043746 was revised and v2.2 was published.
  • 2008-07-29T17:18:58Z - NCEI Accession 0043747 v1.1 was published.
  • 2008-07-29T17:19:05Z - NCEI Accession 0043748 v1.1 was published.
  • 2008-07-29T17:19:05Z - NCEI Accession 0043748 was revised and v2.2 was published.
  • 2008-07-29T17:19:05Z - NCEI Accession 0043748 was revised and v3.3 was published.
  • 2008-07-29T17:19:12Z - NCEI Accession 0043749 v1.1 was published.
  • 2008-07-29T17:19:12Z - NCEI Accession 0043749 was revised and v2.2 was published.
  • 2008-07-29T17:19:12Z - NCEI Accession 0043749 was revised and v3.3 was published.
  • 2008-07-29T17:19:19Z - NCEI Accession 0043750 v1.1 was published.
  • 2008-07-29T17:19:19Z - NCEI Accession 0043750 was revised and v2.2 was published.
  • 2008-07-29T17:19:19Z - NCEI Accession 0043750 was revised and v3.3 was published.
  • 2008-07-29T17:19:19Z - NCEI Accession 0043750 was revised and v4.4 was published.
  • 2008-07-29T17:19:31Z - NCEI Accession 0043751 v1.1 was published.
  • 2008-07-29T17:19:31Z - NCEI Accession 0043751 was revised and v2.2 was published.
  • 2008-07-29T17:19:31Z - NCEI Accession 0043751 was revised and v3.3 was published.
  • 2008-07-29T17:19:38Z - NCEI Accession 0043752 v1.1 was published.
  • 2008-07-29T17:19:38Z - NCEI Accession 0043752 was revised and v2.2 was published.
  • 2008-07-29T17:19:45Z - NCEI Accession 0043753 v1.1 was published.
  • 2008-07-29T17:19:45Z - NCEI Accession 0043753 was revised and v2.2 was published.
  • 2008-07-29T17:19:45Z - NCEI Accession 0043753 was revised and v3.3 was published.
  • 2008-07-29T17:19:51Z - NCEI Accession 0043754 v1.1 was published.
  • 2008-07-29T17:19:51Z - NCEI Accession 0043754 was revised and v2.2 was published.
  • 2008-07-29T17:20:09Z - NCEI Accession 0043755 v1.1 was published.
  • 2008-07-29T17:20:09Z - NCEI Accession 0043755 was revised and v2.2 was published.
  • 2008-07-29T17:20:09Z - NCEI Accession 0043755 was revised and v3.3 was published.
  • 2008-07-29T17:20:16Z - NCEI Accession 0043756 v1.1 was published.
  • 2008-07-29T17:20:16Z - NCEI Accession 0043756 was revised and v2.2 was published.
  • 2008-07-29T17:20:16Z - NCEI Accession 0043756 was revised and v3.3 was published.
  • 2008-07-29T17:20:25Z - NCEI Accession 0043757 v1.1 was published.
  • 2008-07-29T17:20:25Z - NCEI Accession 0043757 was revised and v2.2 was published.
  • 2008-07-29T17:20:25Z - NCEI Accession 0043757 was revised and v3.3 was published.
  • 2008-07-29T17:20:31Z - NCEI Accession 0043758 v1.1 was published.
  • 2008-07-29T17:20:31Z - NCEI Accession 0043758 was revised and v2.2 was published.
  • 2008-09-15T18:28:21Z - NCEI Accession 0045493 v1.1 was published.
  • 2008-09-15T18:28:46Z - NCEI Accession 0045494 v1.1 was published.
  • 2008-09-15T18:28:59Z - NCEI Accession 0045495 v1.1 was published.
  • 2008-09-15T18:29:08Z - NCEI Accession 0045496 v1.1 was published.
  • 2008-09-15T18:29:18Z - NCEI Accession 0045497 v1.1 was published.
  • 2008-09-15T18:29:30Z - NCEI Accession 0045498 v1.1 was published.
  • 2008-09-15T18:29:30Z - NCEI Accession 0045498 was revised and v2.2 was published.
  • 2008-09-15T18:29:30Z - NCEI Accession 0045498 was revised and v3.3 was published.
  • 2009-03-10T21:05:50Z - NCEI Accession 0051818 v1.1 was published.
  • 2009-03-10T21:05:50Z - NCEI Accession 0051818 was revised and v2.2 was published.
  • 2009-03-10T21:06:14Z - NCEI Accession 0051819 v1.1 was published.
  • 2009-03-10T21:06:14Z - NCEI Accession 0051819 was revised and v2.2 was published.
  • 2009-03-10T21:06:32Z - NCEI Accession 0051820 v1.1 was published.
  • 2009-03-10T21:06:32Z - NCEI Accession 0051820 was revised and v2.2 was published.
  • 2009-03-10T21:06:40Z - NCEI Accession 0051821 v1.1 was published.
  • 2009-03-10T21:06:40Z - NCEI Accession 0051821 was revised and v2.2 was published.
  • 2009-03-10T21:06:48Z - NCEI Accession 0051822 v1.1 was published.
  • 2009-03-10T21:06:56Z - NCEI Accession 0051823 v1.1 was published.
  • 2009-03-10T21:06:56Z - NCEI Accession 0051823 was revised and v2.2 was published.
  • 2009-03-10T21:07:04Z - NCEI Accession 0051824 v1.1 was published.
  • 2009-03-10T21:07:11Z - NCEI Accession 0051825 v1.1 was published.
  • 2009-03-10T21:07:11Z - NCEI Accession 0051825 was revised and v2.2 was published.
  • 2009-03-10T21:07:17Z - NCEI Accession 0051826 v1.1 was published.
  • 2009-03-10T21:07:17Z - NCEI Accession 0051826 was revised and v2.2 was published.
  • 2009-03-10T21:07:24Z - NCEI Accession 0051827 v1.1 was published.
  • 2009-03-10T21:07:24Z - NCEI Accession 0051827 was revised and v2.2 was published.
  • 2009-03-10T21:07:31Z - NCEI Accession 0051828 v1.1 was published.
  • 2009-03-10T21:07:38Z - NCEI Accession 0051829 v1.1 was published.
  • 2009-03-10T21:07:38Z - NCEI Accession 0051829 was revised and v2.2 was published.
  • 2009-03-10T21:07:44Z - NCEI Accession 0051830 v1.1 was published.
  • 2009-03-10T21:08:18Z - NCEI Accession 0051831 v1.1 was published.
  • 2009-03-10T21:08:18Z - NCEI Accession 0051831 was revised and v2.2 was published.
  • 2009-03-10T21:08:25Z - NCEI Accession 0051832 v1.1 was published.
  • 2009-03-10T21:08:25Z - NCEI Accession 0051832 was revised and v2.2 was published.
  • 2009-03-10T21:08:31Z - NCEI Accession 0051833 v1.1 was published.
  • 2009-03-10T21:08:31Z - NCEI Accession 0051833 was revised and v2.2 was published.
  • 2009-03-10T21:08:38Z - NCEI Accession 0051834 v1.1 was published.
  • 2009-03-10T21:08:44Z - NCEI Accession 0051835 v1.1 was published.
  • 2009-03-10T21:08:44Z - NCEI Accession 0051835 was revised and v2.2 was published.
  • 2009-03-10T21:08:51Z - NCEI Accession 0051836 v1.1 was published.
  • 2009-03-10T21:08:57Z - NCEI Accession 0051837 v1.1 was published.
  • 2009-03-10T21:08:57Z - NCEI Accession 0051837 was revised and v2.2 was published.
  • 2009-03-10T21:09:03Z - NCEI Accession 0051838 v1.1 was published.
  • 2009-03-10T21:09:03Z - NCEI Accession 0051838 was revised and v2.2 was published.
  • 2009-03-10T21:09:13Z - NCEI Accession 0051839 v1.1 was published.
  • 2009-03-10T21:09:13Z - NCEI Accession 0051839 was revised and v2.2 was published.
  • 2009-03-10T21:09:21Z - NCEI Accession 0051840 v1.1 was published.
  • 2009-03-10T21:10:11Z - NCEI Accession 0051841 v1.1 was published.
  • 2009-03-10T21:10:11Z - NCEI Accession 0051841 was revised and v2.2 was published.
  • 2009-03-10T21:10:18Z - NCEI Accession 0051842 v1.1 was published.
  • 2009-03-10T21:10:18Z - NCEI Accession 0051842 was revised and v2.2 was published.
  • 2009-03-10T21:10:36Z - NCEI Accession 0051843 v1.1 was published.
  • 2009-03-10T21:10:36Z - NCEI Accession 0051843 was revised and v2.2 was published.
  • 2009-03-10T21:11:42Z - NCEI Accession 0051844 v1.1 was published.
  • 2009-03-10T21:11:42Z - NCEI Accession 0051844 was revised and v2.2 was published.
  • 2009-03-10T21:13:30Z - NCEI Accession 0051845 v1.1 was published.
  • 2009-06-11T18:10:14Z - NCEI Accession 0054496 v1.1 was published.
  • 2009-06-11T18:10:14Z - NCEI Accession 0054496 was revised and v2.2 was published.
  • 2010-03-03T22:34:10Z - NCEI Accession 0062474 v1.1 was published.
  • 2010-03-03T22:34:10Z - NCEI Accession 0062474 was revised and v2.2 was published.
  • 2018-08-17T16:57:58Z - NCEI Accession 0001763 was revised and v3.3 was published.
  • 2018-08-21T15:38:20Z - NCEI Accession 0001764 was revised and v3.3 was published.
  • 2018-08-21T17:29:19Z - NCEI Accession 0001765 was revised and v3.3 was published.
  • 2018-08-22T02:06:59Z - NCEI Accession 0001766 was revised and v3.3 was published.
  • 2018-08-22T15:18:01Z - NCEI Accession 0001767 was revised and v3.3 was published.
  • 2018-08-22T16:34:34Z - NCEI Accession 0001768 was revised and v3.3 was published.
  • 2018-08-23T04:31:14Z - NCEI Accession 0001769 was revised and v3.3 was published.
  • 2018-08-23T13:51:36Z - NCEI Accession 0001770 was revised and v3.3 was published.
  • 2018-08-24T01:57:33Z - NCEI Accession 0001771 was revised and v3.3 was published.
  • 2018-08-24T13:45:07Z - NCEI Accession 0001772 was revised and v3.3 was published.
  • 2018-08-25T07:55:17Z - NCEI Accession 0001773 was revised and v3.3 was published.
  • 2018-08-25T19:48:08Z - NCEI Accession 0001774 was revised and v3.3 was published.
  • 2018-08-26T07:51:47Z - NCEI Accession 0001775 was revised and v3.3 was published.
  • 2018-08-26T19:40:58Z - NCEI Accession 0001776 was revised and v3.3 was published.
  • 2018-08-27T07:45:02Z - NCEI Accession 0001777 was revised and v3.3 was published.
  • 2018-08-27T19:40:41Z - NCEI Accession 0001778 was revised and v3.3 was published.
  • 2018-08-28T07:52:20Z - NCEI Accession 0001779 was revised and v3.3 was published.
  • 2018-08-28T19:40:43Z - NCEI Accession 0043733 was revised and v3.3 was published.
  • 2018-08-29T07:41:24Z - NCEI Accession 0043739 was revised and v3.3 was published.
  • 2018-08-29T16:06:55Z - NCEI Accession 0043745 was revised and v3.3 was published.
  • 2018-08-29T16:42:38Z - NCEI Accession 0043750 was revised and v5.5 was published.
  • 2018-08-29T17:29:10Z - NCEI Accession 0043756 was revised and v4.4 was published.
  • 2018-09-27T21:10:11Z - NCEI Accession 0001814 was revised and v3.3 was published.
  • 2018-09-28T00:43:00Z - NCEI Accession 0001815 was revised and v3.3 was published.
  • 2018-09-29T08:01:29Z - NCEI Accession 0001817 was revised and v3.3 was published.
  • 2018-09-29T19:52:15Z - NCEI Accession 0001818 was revised and v3.3 was published.
  • 2018-09-30T13:16:58Z - NCEI Accession 0001819 was revised and v3.3 was published.
  • 2018-09-30T23:11:09Z - NCEI Accession 0001820 was revised and v3.3 was published.
  • 2018-10-01T04:18:03Z - NCEI Accession 0001821 was revised and v3.3 was published.
  • 2018-10-01T16:00:17Z - NCEI Accession 0001822 was revised and v3.3 was published.
  • 2018-10-02T01:14:51Z - NCEI Accession 0001823 was revised and v3.3 was published.
  • 2018-10-02T14:59:32Z - NCEI Accession 0001824 was revised and v3.3 was published.
  • 2018-10-02T20:03:37Z - NCEI Accession 0001825 was revised and v3.3 was published.
  • 2018-10-05T23:22:46Z - NCEI Accession 0001826 was revised and v3.3 was published.
  • 2018-10-10T15:22:41Z - NCEI Accession 0001827 was revised and v3.3 was published.
  • 2018-10-10T19:56:46Z - NCEI Accession 0001828 was revised and v3.3 was published.
  • 2018-10-11T00:47:27Z - NCEI Accession 0001829 was revised and v3.3 was published.
  • 2018-10-11T04:50:00Z - NCEI Accession 0001830 was revised and v3.3 was published.
  • 2018-10-11T14:15:47Z - NCEI Accession 0043730 was revised and v3.3 was published.
  • 2018-10-11T17:08:14Z - NCEI Accession 0043736 was revised and v3.3 was published.
  • 2018-10-11T22:34:36Z - NCEI Accession 0043742 was revised and v3.3 was published.
  • 2018-10-12T03:24:40Z - NCEI Accession 0043748 was revised and v4.4 was published.
  • 2018-10-12T15:31:42Z - NCEI Accession 0043753 was revised and v4.4 was published.
  • 2018-10-12T21:32:24Z - NCEI Accession 0045498 was revised and v4.4 was published.
  • 2018-10-16T03:46:28Z - NCEI Accession 0054496 was revised and v3.3 was published.
  • 2018-10-16T18:03:08Z - NCEI Accession 0062474 was revised and v3.3 was published.
  • 2018-10-16T20:55:54Z - NCEI Accession 0043748 was revised and v5.5 was published.
  • 2018-10-17T01:04:09Z - NCEI Accession 0043753 was revised and v5.5 was published.
  • 2019-11-12T23:21:26Z - NCEI Accession 0051818 was revised and v3.3 was published.
  • 2019-11-14T00:25:50Z - NCEI Accession 0051826 was revised and v3.3 was published.
  • 2019-11-22T14:54:20Z - NCEI Accession 0051832 was revised and v3.3 was published.
  • 2019-11-22T18:52:35Z - NCEI Accession 0051838 was revised and v3.3 was published.
  • 2019-11-23T23:20:44Z - NCEI Accession 0051823 was revised and v3.3 was published.
  • 2019-11-26T00:55:55Z - NCEI Accession 0051829 was revised and v3.3 was published.
  • 2019-11-28T00:52:58Z - NCEI Accession 0051835 was revised and v3.3 was published.
  • 2019-11-28T14:18:48Z - NCEI Accession 0051841 was revised and v3.3 was published.
  • 2021-10-15T01:45:06Z - NCEI Accession 0001816 v1.1 was published.
  • 2021-10-15T01:45:06Z - NCEI Accession 0001816 was revised and v2.2 was published.
  • 2022-01-03T17:04:00Z - NCEI Accession 0001763 was revised and v3.4 was published.
  • 2022-01-03T20:03:59Z - NCEI Accession 0001764 was revised and v3.4 was published.
  • 2022-01-04T00:23:57Z - NCEI Accession 0001765 was revised and v3.4 was published.
  • 2022-01-04T00:47:04Z - NCEI Accession 0001766 was revised and v3.4 was published.
  • 2022-01-04T01:02:56Z - NCEI Accession 0001780 was revised and v2.3 was published.
  • 2022-01-04T01:18:18Z - NCEI Accession 0001781 was revised and v2.3 was published.
  • 2022-01-04T01:34:00Z - NCEI Accession 0001782 was revised and v2.3 was published.
  • 2022-01-04T02:11:51Z - NCEI Accession 0001783 was revised and v2.3 was published.
  • 2022-01-04T02:46:16Z - NCEI Accession 0001784 was revised and v2.3 was published.
  • 2022-01-04T03:11:15Z - NCEI Accession 0001785 was revised and v2.3 was published.
  • 2022-01-04T03:29:25Z - NCEI Accession 0001786 was revised and v2.3 was published.
  • 2022-01-04T13:28:03Z - NCEI Accession 0001787 was revised and v2.3 was published.
  • 2022-01-04T13:42:10Z - NCEI Accession 0001788 was revised and v2.3 was published.
  • 2022-01-04T13:54:27Z - NCEI Accession 0001789 was revised and v2.3 was published.
  • 2022-01-04T14:05:52Z - NCEI Accession 0001790 was revised and v2.3 was published.
  • 2022-01-04T14:18:12Z - NCEI Accession 0001791 was revised and v2.3 was published.
  • 2022-01-04T14:30:26Z - NCEI Accession 0001792 was revised and v2.3 was published.
  • 2022-01-04T14:42:35Z - NCEI Accession 0001793 was revised and v2.3 was published.
  • 2022-01-04T14:54:15Z - NCEI Accession 0001794 was revised and v2.3 was published.
  • 2022-01-04T15:06:39Z - NCEI Accession 0001795 was revised and v2.3 was published.
  • 2022-01-04T15:19:17Z - NCEI Accession 0001796 was revised and v2.3 was published.
  • 2022-01-04T15:25:29Z - NCEI Accession 0001797 was revised and v1.2 was published.
  • 2022-01-04T16:13:07Z - NCEI Accession 0001798 was revised and v1.2 was published.
  • 2022-01-04T16:20:43Z - NCEI Accession 0001799 was revised and v1.2 was published.
  • 2022-01-04T16:27:56Z - NCEI Accession 0001800 was revised and v1.2 was published.
  • 2022-01-04T16:35:44Z - NCEI Accession 0001801 was revised and v1.2 was published.
  • 2022-01-04T16:42:59Z - NCEI Accession 0001802 was revised and v1.2 was published.
  • 2022-01-04T16:50:05Z - NCEI Accession 0001803 was revised and v1.2 was published.
  • 2022-01-04T16:57:15Z - NCEI Accession 0001804 was revised and v1.2 was published.
  • 2022-01-04T17:04:03Z - NCEI Accession 0001805 was revised and v1.2 was published.
  • 2022-01-04T17:10:48Z - NCEI Accession 0001806 was revised and v1.2 was published.
  • 2022-01-04T17:28:55Z - NCEI Accession 0001807 was revised and v1.2 was published.
  • 2022-01-04T17:38:51Z - NCEI Accession 0001808 was revised and v1.2 was published.
  • 2022-01-04T17:45:41Z - NCEI Accession 0001809 was revised and v1.2 was published.
  • 2022-01-04T17:52:03Z - NCEI Accession 0001810 was revised and v1.2 was published.
  • 2022-01-04T17:58:16Z - NCEI Accession 0001811 was revised and v1.2 was published.
  • 2022-01-04T18:04:16Z - NCEI Accession 0001812 was revised and v1.2 was published.
  • 2022-01-04T18:10:16Z - NCEI Accession 0001813 was revised and v1.2 was published.
  • 2022-01-04T18:13:41Z - NCEI Accession 0001831 was revised and v2.3 was published.
  • 2022-01-04T18:17:13Z - NCEI Accession 0001832 was revised and v2.3 was published.
  • 2022-01-04T18:21:38Z - NCEI Accession 0001833 was revised and v2.3 was published.
  • 2022-01-04T18:25:29Z - NCEI Accession 0001834 was revised and v2.3 was published.
  • 2022-01-04T18:36:17Z - NCEI Accession 0001835 was revised and v2.3 was published.
  • 2022-01-04T18:41:11Z - NCEI Accession 0001836 was revised and v2.3 was published.
  • 2022-01-04T18:45:23Z - NCEI Accession 0001837 was revised and v2.3 was published.
  • 2022-01-04T18:49:32Z - NCEI Accession 0001838 was revised and v2.3 was published.
  • 2022-01-04T18:53:41Z - NCEI Accession 0001839 was revised and v2.3 was published.
  • 2022-01-04T18:57:50Z - NCEI Accession 0001840 was revised and v2.3 was published.
  • 2022-01-04T19:01:50Z - NCEI Accession 0001841 was revised and v2.3 was published.
  • 2022-01-04T19:05:47Z - NCEI Accession 0001842 was revised and v2.3 was published.
  • 2022-01-04T19:09:30Z - NCEI Accession 0001843 was revised and v2.3 was published.
  • 2022-01-04T19:13:08Z - NCEI Accession 0001844 was revised and v2.3 was published.
  • 2022-01-05T12:19:46Z - NCEI Accession 0001845 was revised and v2.3 was published.
  • 2022-01-05T12:24:39Z - NCEI Accession 0001846 was revised and v2.3 was published.
  • 2022-01-05T12:29:11Z - NCEI Accession 0001847 was revised and v2.3 was published.
  • 2022-01-05T12:29:33Z - NCEI Accession 0001848 was revised and v1.2 was published.
  • 2022-01-05T12:29:55Z - NCEI Accession 0001849 was revised and v1.2 was published.
  • 2022-01-05T12:30:16Z - NCEI Accession 0001850 was revised and v1.2 was published.
  • 2022-01-05T13:02:21Z - NCEI Accession 0001851 was revised and v1.2 was published.
  • 2022-01-05T13:03:23Z - NCEI Accession 0001852 was revised and v1.2 was published.
  • 2022-01-05T13:03:43Z - NCEI Accession 0001853 was revised and v1.2 was published.
  • 2022-01-05T13:04:03Z - NCEI Accession 0001854 was revised and v1.2 was published.
  • 2022-01-07T14:28:35Z - NCEI Accession 0001855 was revised and v1.2 was published.
  • 2022-01-07T14:29:39Z - NCEI Accession 0001856 was revised and v1.2 was published.
  • 2022-01-07T14:30:35Z - NCEI Accession 0001857 was revised and v1.2 was published.
  • 2022-01-07T14:31:42Z - NCEI Accession 0001858 was revised and v1.2 was published.
  • 2022-01-07T14:32:39Z - NCEI Accession 0001859 was revised and v1.2 was published.
  • 2022-01-07T14:33:44Z - NCEI Accession 0001860 was revised and v1.2 was published.
  • 2022-01-07T14:34:42Z - NCEI Accession 0001861 was revised and v1.2 was published.
  • 2022-01-07T14:35:41Z - NCEI Accession 0001862 was revised and v1.2 was published.
  • 2022-01-07T14:37:50Z - NCEI Accession 0001863 was revised and v1.2 was published.
  • 2022-01-07T14:38:46Z - NCEI Accession 0001864 was revised and v1.2 was published.
  • 2022-01-07T15:46:44Z - NCEI Accession 0043731 was revised and v1.2 was published.
  • 2022-01-07T15:54:49Z - NCEI Accession 0043732 was revised and v2.3 was published.
  • 2022-01-08T14:01:33Z - NCEI Accession 0043734 was revised and v2.3 was published.
  • 2022-01-08T14:08:46Z - NCEI Accession 0043735 was revised and v1.2 was published.
  • 2022-01-08T14:09:25Z - NCEI Accession 0043737 was revised and v1.2 was published.
  • 2022-01-08T14:13:45Z - NCEI Accession 0043738 was revised and v2.3 was published.
  • 2022-01-08T19:04:39Z - NCEI Accession 0043740 was revised and v2.3 was published.
  • 2022-01-08T19:11:54Z - NCEI Accession 0043741 was revised and v1.2 was published.
  • 2022-01-08T19:12:14Z - NCEI Accession 0043743 was revised and v1.2 was published.
  • 2022-01-08T19:16:22Z - NCEI Accession 0043744 was revised and v2.3 was published.
  • 2022-01-08T19:29:32Z - NCEI Accession 0043746 was revised and v2.3 was published.
  • 2022-01-08T19:36:20Z - NCEI Accession 0043747 was revised and v1.2 was published.
  • 2022-01-08T19:39:49Z - NCEI Accession 0043749 was revised and v3.4 was published.
  • 2022-01-08T22:19:52Z - NCEI Accession 0043751 was revised and v3.4 was published.
  • 2022-01-08T22:26:12Z - NCEI Accession 0043752 was revised and v2.3 was published.
  • 2022-01-08T22:26:29Z - NCEI Accession 0043754 was revised and v2.3 was published.
  • 2022-01-08T22:29:54Z - NCEI Accession 0043755 was revised and v3.4 was published.
  • 2022-01-08T22:42:01Z - NCEI Accession 0043757 was revised and v3.4 was published.
  • 2022-01-08T22:48:40Z - NCEI Accession 0043758 was revised and v2.3 was published.
  • 2022-01-09T05:59:11Z - NCEI Accession 0045493 was revised and v1.2 was published.
  • 2022-01-09T10:39:08Z - NCEI Accession 0045494 was revised and v1.2 was published.
  • 2022-01-09T13:56:10Z - NCEI Accession 0045495 was revised and v1.2 was published.
  • 2022-01-09T15:27:28Z - NCEI Accession 0045496 was revised and v1.2 was published.
  • 2022-01-09T18:04:38Z - NCEI Accession 0045497 was revised and v1.2 was published.
  • 2022-01-10T02:16:40Z - NCEI Accession 0051818 was revised and v3.4 was published.
  • 2022-01-10T02:19:55Z - NCEI Accession 0051819 was revised and v2.3 was published.
  • 2022-01-10T02:33:03Z - NCEI Accession 0051820 was revised and v2.3 was published.
  • 2022-01-10T02:40:40Z - NCEI Accession 0051821 was revised and v2.3 was published.
  • 2022-01-10T02:44:37Z - NCEI Accession 0051822 was revised and v1.2 was published.
  • 2022-01-10T05:52:03Z - NCEI Accession 0051823 was revised and v3.4 was published.
  • 2022-01-10T05:53:31Z - NCEI Accession 0051824 was revised and v1.2 was published.
  • 2022-01-10T05:59:07Z - NCEI Accession 0051825 was revised and v2.3 was published.
  • 2022-01-10T06:28:50Z - NCEI Accession 0051826 was revised and v3.4 was published.
  • 2022-01-10T06:45:36Z - NCEI Accession 0051827 was revised and v2.3 was published.
  • 2022-01-10T06:54:12Z - NCEI Accession 0051828 was revised and v1.2 was published.
  • 2022-01-10T09:05:07Z - NCEI Accession 0051829 was revised and v3.4 was published.
  • 2022-01-10T09:06:44Z - NCEI Accession 0051830 was revised and v1.2 was published.
  • 2022-01-10T09:15:35Z - NCEI Accession 0051831 was revised and v2.3 was published.
  • 2022-01-10T10:18:09Z - NCEI Accession 0051832 was revised and v3.4 was published.
  • 2022-01-10T12:05:32Z - NCEI Accession 0051833 was revised and v2.3 was published.
  • 2022-01-10T12:13:56Z - NCEI Accession 0051834 was revised and v1.2 was published.
  • 2022-01-10T13:51:27Z - NCEI Accession 0051835 was revised and v3.4 was published.
  • 2022-01-10T13:52:04Z - NCEI Accession 0051836 was revised and v1.2 was published.
  • 2022-01-11T00:28:02Z - NCEI Accession 0051837 was revised and v2.3 was published.
  • 2022-01-11T17:43:38Z - NCEI Accession 0051839 was revised and v2.3 was published.
  • 2022-01-11T18:38:57Z - NCEI Accession 0051840 was revised and v1.2 was published.
  • 2022-01-11T18:44:19Z - NCEI Accession 0051841 was revised and v3.4 was published.
  • 2022-01-11T18:44:50Z - NCEI Accession 0051842 was revised and v2.3 was published.
  • 2022-01-11T18:46:22Z - NCEI Accession 0051843 was revised and v2.3 was published.
  • 2022-01-11T18:47:34Z - NCEI Accession 0051844 was revised and v2.3 was published.
  • 2022-01-11T18:48:14Z - NCEI Accession 0051845 was revised and v1.2 was published.
Processing Environment Native Dataset Environment: NCSA Hierarchical Data Format (HDF 4), Scientific Data Set (HDF-SDS) This set of NODC accessions contains yearly, daily, monthly, 8-day, 7-day, and 5-day v5.0 and 5.1 files, which follow the file naming convention described below. Each file also has an accompanying low-resolution graphic. OBSDATE.[BITCODE][RESO][AVGPERIOD][DAYNIGHT][VER]-TYPE(-BITS).hdf (for example: 1985.s04y1pfv50-bsst-16b.hdf) Where: OBSDATE = The date(s) the observations were made. OBSDATE may be in one of the following forms: - Daily Files: YYYYDDD, with: YYYY = 4 digit year of observation (1985-200x) DDD = 3 digit day of year (001-365, or 001-366 for leap years) (For help converting between calendar dates and day of year, please see our Calendar Date Conversion Chart) - 5-Day Files: SYYYYDDD-EYYYYDDD, with: SYYYYDDD = starting 4-digit year and 3-digit day EYYYYDDD = ending 4-digit year and 3-digit day - 7-Day Files: YYYYWW, with: YYYY = 4 digit year of observation WW = 2-digit week number between 01 and 52 - 8-Day Files: SYYYYDDD-EYYYYDDD, with: SYYYYDDD = starting 4-digit year and 3-digit day EYYYYDDD = ending 4-digit year and 3-digit day - Monthly Files: YYYYMM, with: YYYY = 4 digit year of observation MM = 2-digit month between 01 and 12 - Yearly Files: YYYY, with: YYYY = 4 digit year of observation BITCODE = Indicates the bit length of the pixel values in the file. s is for 16 bit files, m is for 8 bit files (see BITS below) RESO = Approximate resolution in km. Set to 04 for 4 km files AVGPERIOD = Indicates the averaging period used to create the file. AVGPERIOD may be in one of the following forms: Daily Files = d 5-Day Files = 5 7-Day Files = w 8-Day Files = 8 Monthly Files = m Yearly Files = y DAYNIGHT = Indicates nighttime, descending pass (1 or 4) or daytime, ascending pass (3 or 2) observations. VER indicates version, pfv50 or pfv51 = Shorthand for Pathfinder Version 5.0 or 5.1; pfrt denotes interim data and stands for "Pathfinder Real Time." TYPE indicates the type of data stored in the file, and may be one of the following: sst: Pathfinder all-pixel SST; bsst: first-guess SST field, either OISSTv2 for pfv50/pfrt or DOISSTv2 for pfv51; sdev: Standard deviation; num: Number of observations; qual: Overall quality value; msk1: Quality mask 1; msk2: Quality mask 2. BITS = Number of bits in each pixel; only present for 16-bit files (-16b). hdf indicates HDF-SDS Version 4 file format. Technical Prerequisites: Web browser, PC, MAC, Linux, UNIX, FTP or other download capability. Ability to work with .HDF satellite data files strongly suggested.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - 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.
Acquisition Information (collection)
Instrument
  • AVHRR-2
  • AVHRR-3
Platform
  • NOAA-11
  • NOAA-14
  • NOAA-16
  • NOAA-17
  • NOAA-18
  • NOAA-7
  • NOAA-9
Last Modified: 2023-11-16T18:18:47Z
For questions about the information on this page, please email: ncei.info@noaa.gov