CRU global land precipitation data

CRU Hulme Global Land Precipitation Data

(Updated: 2 June 2000)

Global Land Precipitation

An historical monthly precipitation data set for global land areas from 1900 to 1998, gridded at two different resolutions (2.5° latitude by 3.75° longitude and 5° latitude/longitude) has been constructed and is available for use in scientific research. The two data files (gu23wld0098.dat and g55wld0098.dat) can be obtained by clicking on the buttons below. The files are, respectively, 10.8 and 5.8MB in size (3.7 and 2.0MB when zipped). The zipped (binary; gzip under Unix) files (Version 1.0, March 1999) may be found in the following location:

5 Degreee Gridded Data Set

A documentation file (5 degree) should be viewed and copied as this contains details about the data set, the data format and conditions of use.

2.5 by 3.75 Degree Gridded Data Set

A documentation file (2.5 by 3.75 degree) should be viewed and copied as this contains details about the data set, the data format and conditions of use.

Tropical Land and Ocean Precipitation

A monthly blended land and ocean precipitation data set for the extended tropical region (30degN to 30degS) from 1974 to 1994, gridded at the resolution 2.5° latitude by 3.75° longitude is also available. The data file (gu23trp7494.dat) can be obtained by clicking on the button below. The file is 3.7MB in size (1.3MB when zipped). The zipped (binary; gzip under Unix) file (Version 1.0, February 1998) may be found in the following location:

A documentation file (tropical land & ocean) should be viewed and copied as this contains details about the data set, the data format and conditions of use.

Acknowledgements and Further Information

Once any of these precipitation data sets have been transferred, please email m.hulme@uea.ac.uk to say which data set you have downloaded and for what purpose. gu23wld0098.dat and g55wld0098.dat replace earlier versions which you may have previously used (e.g. G55WLD0092.DAT, GU23WLD0096.DAT, etc.) and contain more extensive spatial and temporal data coverage than earlier versions.

The maintenance of all these precipitation data sets is partly supported by a contract with the UK Department of the Environment, Transport and the Regions (Contract No. DETR 1/1/85).

The construction of global climatologies for variables other than precipitation and at a resolution of 0.5° has been funded as part of a NERC funded carbon modelling project. This has resulted in a new 0.5° resolution climatology for all land areas extending back to 1900.

Dr Mike Hulme
Climatic Research Unit
School of Environmental Sciences
University of East Anglia
Norwich NR4 7TJ, UK

(tel: +1603 593162; fax: +1603 507784; email: m.hulme@uea.ac.uk)

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