Resource Description: These data are archived at the National Oceanographic Data Center and may be referenced by an assigned seven-digit accession number. Accession numbers and additional data details may be viewed utilizing the NODC Ocean Archive System at https://data.noaa.gov/onestop/ and searching by title under Pathfinder and other desired parameters.
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Value | Definition |
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sea surface temperature | The .HDF files are 16-bit files, and pixel values can range from 0 to 65535 (2 to the 16th power). However,realistic pixel values for SST will always be less than 600 or so. SST in degrees C = (0.075 *pixel value) - 3.0, so a pixel value of 600 equals 42 degrees C, a temperature which exceedsnormal SST limits. Temperatures are represented in 0.075 degree C increments |
Value | Definition |
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first guess sea surface temperature | The .HDF files are 16 bit files, and pixel values can range from 0 to 65535 (2 to the 16th power). However,realistic pixel values for first guess SST will always be less than 600 or so. First-guess SST indegrees C = (0.075 * pixel value) - 3.0, so a pixel value of 600 equals 42 degrees C, atemperature which exceeds normal SST limits. Temperatures are represented in 0.075 degree Cincrements |
Value | Definition |
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first guess sea surface temperature | The .HDF files are 16 bit files, and pixel values can range from 0 to 65535 (2 to the 16th power). However, realistic pixel values for first guess SST will always be less than 600 or so. First-guess SST in degrees C = (0.075 * pixel value) 3.0, so a pixel value of 600 equals 42 degrees C, a temperature which exceeds normal SST limits. Temperatures are represented in 0.075 degree C increments. |
Range of values | |
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Minimum: | -90 |
Maximum: | 90 |
Units: | decimal degrees |
Resolution: | 0.000000001 |
Range of values | |
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Minimum: | -180 |
Maximum: | 180 |
Units: | decimal degrees |
Resolution: | 0.0000000001 |
Range of values | |
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Minimum: | 0 |
Maximum: | 255 |
Units: | unitless |
Resolution: | 1 |
Range of values | |
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Minimum: | 0 |
Maximum: | 255 |
Units: | unitless |
Resolution: | 1 |
Range of values | |
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Minimum: | 0 |
Maximum: | 255 |
Units: | number of observations |
Resolution: | 1 |
Range of values | |
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Minimum: | 0 |
Maximum: | 7 |
Units: | quality level |
Resolution: | 1 |
Value | Definition |
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standard deviation of sea surface temperature | The .HDF files for standard deviation are 16 bit files, and pixel values can range from 0 to 65535 (2 to the 16thpower). Standard deviation of SST in degrees C = (0.15 * pixel value) - 0.0, so a pixel value of50 equals 7.5 degrees C for example. Standard deviations of SST are represented in 0.15 degreeC increments. |
Kenneth S. Casey, National Oceanographic Data Center (NODC), and Edward J. Kearns, Vicki Halliwell, and Robert Evans, University of Miami, Rosenstiel School of Marine and Atmospheric Science (RSMAS)
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.
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Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- Please acknowledge the use of these data with: The Pathfinder Version 5 and 5.1 SST Data were provided by the NOAA National Oceanographic Data Center at URL: http://pathfinder.nodc.noaa.gov
NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.
Data format: | Sea surface temperature (SST) values for each pixel location, first-guess SST provided by the Reynolds Optimally Interpolated SST Version 2 (OISSTv2) product (or the Reynolds Optimum Interpolation 1/4-Degree Daily SST Analysis Version 2 (DOISSTv2) product for v5.1 data), number of observations in each 4 km bin, standard deviation of the observations in each 4 km bin, overall quality flag, mask 1, and mask 2. (See the Supplemental Information in the 'Identification' section and the 'Entity and Attribute' section of this metadata record for a more detailed description of each parameter). in format HDF NCSA Hierarchical Data Format (HDF 4), Scientific Data Set (HDF-SDS) |
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Network links: |
ftp://ftp.nodc.noaa.gov/pub/data.nodc/pathfinder/ https://data.nodc.noaa.gov/pathfinder/ https://data.noaa.gov/onestop/ |
Data format: | Low-resolution .jpg graphics that correspond to an accompanying .hdf file. The entire 'dataset' of browse images is composed of a browse graphic for an ascending and descending pass for each of seven parameters: FirstGuessSST, Mask1, Mask2, NumberObservations, QualityFlag, SST, and StandardDeviation for a total of 14 images per .HDF file. in format .JPG Joint Photographic Experts Group file format |
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Network links: |
https://data.nodc.noaa.gov/pathfinder/Version5.0/browse_images https://data.nodc.noaa.gov/pathfinder/Version5.0_interim/browse_images https://data.nodc.noaa.gov/pathfinder/Version5.1/browse_images |
Data may be directly downloaded through the NODC website at: https://data.noaa.gov/onestop/. NODC can be contacted directly for custom orders. (When requesting data from the NODC, the desired data set may be referred to by the 7-digit NODC accession number associated with the dataset in the NODC archives). In addition, these data and accompanying browse graphics may be directly downloaded from the NODC FTP server at: ftp://data.nodc.noaa.gov/pub/data.nodc/pathfinder/
Within 24 hours if downloaded via the Internet
Contact the NODC User Services Group via phone/FAX/E-mail: nodc.services@noaa.gov
Standard Internet browser, PC, MAC, Linux, UNIX, FTP or other download capability. Ability to work with .HDF satellite data files strongly suggested.