Climatic Research Unit : Data : Pressure & Circulation Indices


Grid-Point Pressure Data for the Northern Hemisphere

This dataset contains monthly mean-sea-level pressure data (MSLP) data on a 5° latitude by 10° longitude grid-point basis. The sources of the original chart data are given in Jones (1987). This dataset is also discussed further by Basnett and Parker (1997) and is compared with a similar dataset available from NCAR (Trenberth and Paolino, 1980) by Williams and van Loon (1976).

File format
for year = 1873 to 2000
  for month = 1 to 12
    format(5i6) ?,?,month,year,northpole
    for xbox = 1 to 36 (0E,10E,20E,30E,...,30W,20W,10W)
      format(16i6) ?,85N,80N,75N,70N,...,25N,20N,15N
Missing data represented by -32768.
To convert value x to millibars: mb=(x/100)+1000

Filename Size
mslpnh.dat.gz 1.6 megabytes5.4 megabytesNorthen Hemisphere Mean Sea Level Pressure
You can download these files from here (right-click then select "Save Target As" or "Save Link As")

Last updated: May 2001, Mike Salmon

These datasets are made available under the Open Database License.
Any rights in individual contents of the datasets are licensed under the
Database Contents License under the conditions of Attribution and Share-Alike.
Please use the attribution Climatic Research Unit, University of East Anglia