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Global 30-Year Mean Monthly Climatology, 1961-1990 (New et al.)


This is a data set of mean monthly surface climate measurements over global land areas, excluding Antarctica, for the period 1961-1990. Values were interpolated from station data to a 0.5 degree latitude/longitude grid for several climatic parameters: precipitation and wet-day frequency, mean temperature and diurnal temperature range (from which maximum temperature and minimum temperature can be determined), vapour pressure, sunshine, cloud cover, ground-frost frequency and windspeed.

A description of the data files is provided as a companion file.

For a complete documentation of the dataset, see New et al, 1999. Also refer to IPCC Data Distribution Centre.

Data Citation

Cite this data set as follows (citation revised on June 27, 2002):

New, M., M. Hulme, and P. D. Jones. 2000. Global 30-Year Mean Monthly Climatology, 1961-1990 (New et al.). Data set. Available on-line [] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A., doi:10.3334/ORNLDAAC/542.


New, M. G., M. Hulme, and P. D. Jones. 2000. Representing twentieth century space-time climate variability. Part 1: Development of a 1961-1990 mean monthly terrestrial climatology. Journal of Climate 12:829-856.

Document Information:

May 25, 2000 (Note: Citation revised on June 27, 2002)

Document Review Date:

October 17, 20008

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