Pressure and Circulation Indices
Climatic Research Unit : Data

Pressure and Circulation Indices

Gridded pressure datasets
» Northern Hemisphere gridded pressure (MSLP) (Phil Jones)
» NCEP/NCAR Reanalysis (Ian Harris) Updated May 2022
Circulation indices and station pressure data
» Southern Oscillation Index (SOI) (Phil Jones)
» North Atlantic Oscillation (NAO) (Phil Jones)
» Vinther et al NAO modifications (Phil Jones)
» Luterbacher et al. NAO Reconstructions (Phil Jones)
» Cornes et al. Paris-London Westerly Index (Tim Osborn)
» Mediterranean Oscillation Index (MOI) and Western MOI (WeMOi) (Ian Harris) MOI updated June 2022
» Saharan Oscillation Index (SaOI) (Kenza Khomsi, external) Added August 2022 *NEW*
» North Sea Caspian Pattern (NCP) (Andrew Harding)
» Trans Polar Index (TPI) (Phil Jones)
» Madras monthly mean sea level pressure (Phil Jones)
» Nagasaki monthly mean sea level pressure and temperature (Phil Jones)

Datasets are managed by a variety of people and projects within CRU. Some are available on-line, others must be requested from the person responsible for them.

Files ending in ".gz" can be decompressed using gzip (most platforms) or WinZip (Windows 9x/NT).

The various datasets on the CRU website are provided for all to use, provided the sources are acknowledged. Acknowledgement should preferably be by citing one or more of the papers referenced on the appropriate page. The website can also be acknowledged if deemed necessary. CRU will endeavour to update the majority of the data pages at timely intervals although this cannot be guaranteed by specific dates.

Last updated: August 2022, Ian Harris

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