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Monthly Northern Hemisphere Sea-Level Pressure Grids, continuing from 1899

| DOI: 10.5065/Z88P-AW38

This dataset contains the longest continuous time series of monthly gridded Northern Hemisphere sea-level pressure data in the DSS archive. The 5-degree latitude/longitude grids, computed from the daily grids in ds010.0, 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.

Each monthly grid is a simple average of all available daily grids for the month. Prior to 1955, there is one grid per day. From July 1962 on, there are two grids each day. In the interim period, the number of daily grids varies between one and two.

The grids for the period 1899-1977 were inspected and many corrections were made by Kevin Trenberth of the Laboratory of Atmospheric Research at the University of Illinois at Champaign-Urbana, and these grids are included in this dataset. For more information about these corrections, see the July 1980 issue of Monthly Weather Review.

Temporal Range:
1899-01-01 13:00 +0000 to 2023-04-30 31:00 +0000
Sea Level Pressure
Vertical Levels:
See the detailed metadata for level information.
Data Types:
Spatial Coverage:
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=15N Northernmost=90N Detailed coverage information
Data Contributors:
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
Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign
Research Data Archive, Computational and Information Systems Laboratory, National Center for Atmospheric Research, University Corporation for Atmospheric Research
National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
National Weather Service, NOAA, U.S. Department of Commerce
Department of Earth, Atmospheric & Planetary Sciences, Massachusetts Institute of Technology
K.E. Trenberth, and D.A. Paolino, 1980: The Northern Hemisphere sea level pressure data set: Trends, errors, and discontinuities Mon. Wea. Rev., 108, 855-872.

Total Volume:
3.06 MB
Data Formats:
Related RDA Datasets:
Daily Northern Hemisphere Sea Level Pressure Grids, continuing from 1899
More Details:
View a more detailed summary of the data, including specific date ranges and locations by parameter
Metadata Record:
Data License:
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