Precipitation fluctuations over northern hemisphere land areas since the mid-19th century

RS Bradley, HF Diaz, JK Eischeid, PD Jones, PM Kelly, CM Goodess

Research output: Contribution to journalArticlepeer-review

258 Citations (Scopus)


An extensive array of measurements extending back to the mid-19th century was used to investigate large-scale changes in precipitation over Northern Hemisphere land areas. Significant increases in mid-latitude precipitation and concurrent decreases in low-latitude precipitation have occurred over the last 30 to 40 years. Although these large-scale trends are consistent with general circulation model projections of precipitation changes associated with doubled concentrations of atmospheric carbon dioxide, they should be viewed as defining large-scale natural climatic variability. Additional work to refine regional variations and address potential network inhomogeneities is needed. This study attempts to show secular precipitation fluctuations over hemispheric- and continental-scale areas of the Northern Hemisphere.
Original languageEnglish
Pages (from-to)171-175
Number of pages5
Issue number4811
Publication statusPublished - 1987

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