Daily Northern Hemisphere Sea Level Pressure Grids, continuing from 1899

The 5-degree latitude/longitude grids contained in this dataset make up the longest continuous set of daily gridded Northern Hemisphere sea-level pressure data in the DSS archive. These grids have been assembled by DSS from the grids of

various meteorological chart digitization projects and
operational analyses.  Grids begin in 1899 and cover the
Northern Hemisphere from 15N to the North Pole.  The dataset
continues to be updated regularly as new data become
available.

In the earlier years, there is one grid per day, but from
July 1962 on, there are two grids per day.  Prior to 1946, the
original grids had a 10-degree resolution and the intermediate
points were interpolated and indicated as such.  Also in this
period, there are times when large numbers of gridpoints are
missing, particularly over the Asian continent.  For more
information, see the

documentation about original data points.

To Access Resource:

Questions? Email Resource Support Contact:

  • datahelp@ucar.edu

Temporal Range

  • Begin:  1899-01-01T1300+00
    End:  2025-10-08T1200+00

Keywords

Resource Type dataset
Temporal Range Begin 1899-01-01T1300+00
Temporal Range End 2025-10-08T1200+00
Temporal Resolution N/A
Bounding Box North Lat 90.0
Bounding Box South Lat 15.0
Bounding Box West Long -180.0
Bounding Box East Long 180.0
Spatial Representation grid
Spatial Resolution 5 degree
Related Links N/A
Additional Information N/A
Resource Format DSS SLP Grid
Standardized Resource Format OTHER
Asset Size 144.761 MB
Legal Constraints

Creative Commons Attribution 4.0 International License
Access Constraints None
Software Implementation Language N/A

Resource Support Name N/A
Resource Support Email datahelp@ucar.edu
Resource Support Organization N/A
Distributor NSF NCAR Geoscience Data Exchange
Metadata Contact Name N/A
Metadata Contact Email datahelp@ucar.edu
Metadata Contact Organization NSF NCAR Geoscience Data Exchange

Author National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Marine Meteorology Division, Naval Research Laboratory, Monterey, U.S. Navy, U. S. Department of Defense
Met Office, Ministry of Defence, United Kingdom
Research Data Archive, Computational and Information Systems Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Department of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology
National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
National Weather Service, NOAA, U.S. Department of Commerce
Publisher NSF National Center for Atmospheric Research
Publication Date 1979-12-05
Digital Object Identifier (DOI) https://doi.org/10.5065/7NB6-RJ33
Alternate Identifier d010000
Resource Version N/A
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2025-10-09T01:46:30Z
Metadata Record Identifier edu.ucar.gdex::d010000
Metadata Language eng; USA
Suggested Citation National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce, Marine Meteorology Division, Naval Research Laboratory, Monterey, U.S. Navy, U. S. Department of Defense, Met Office, Ministry of Defence, United Kingdom, Research Data Archive, Computational and Information Systems Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research, Department of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology, National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce, National Weather Service, NOAA, U.S. Department of Commerce. (1979). Daily Northern Hemisphere Sea Level Pressure Grids, continuing from 1899. NSF National Center for Atmospheric Research. https://doi.org/10.5065/7NB6-RJ33. Accessed 10 October 2025.

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