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Merged Statistical Analyses of Historical Monthly Precipitation Anomalies Beginning 1900

| DOI: 10.5065/Y2Q1-DY81

An improved land-ocean global monthly precipitation anomaly reconstruction is developed for the period beginning in 1900. Reconstructions use the available historical data and statistics developed from the modern satellite-sampled period to analyze variations over the historical pre-satellite period. This paper documents the latest in a series of precipitation reconstructions developed by the authors. Although the reconstruction principle is still the minimization of mean-squared error, this latest reconstruction includes the following three major improvements over previous reconstructions: (i) an improved method that first produces an annual first guess, which is then adjusted using a monthly increment analysis; (ii) improved use of oceanic observations in the annual first guess using a canonical correlation analysis; and (iii) reinjection of gauge data where those data are available. These improvements allow more confident analyses and evaluations of global precipitation variations over the reconstruction period.

(Abstract excerpted from Smith et al. 2012.)

Temporal Range:
1900 to 2008
Precipitation Anomalies
Vertical Levels:
Ground or water surface
Temporal Frequencies:
Monthly Climatology, Every month
Data Types:
Spatial Coverage:
Longitude Range: Westernmost=180W Easternmost=180E
Latitude Range: Southernmost=90S Northernmost=90N Detailed coverage information
Data Contributors:
Earth System Science Interdisciplinary Center, University of Maryland
Smith, T.M., P.A. Arkin, L. Ren, and S.S.P. Shen, 2012: Improved Reconstruction of Global Precipitation since 1900 J. Atmos. Oceanic Technol., 29, 1505-1517 (DOI: 10.1175/JTECH-D-12-00001.1).

Smith, T.M., P.A. Arkin, M.R.P. Sapiano, and C.-Y. Chang, 2010: Merged Statistical Analyses of Historical Monthly Precipitation Anomalies Beginning 1900 J. Climate, 23, 5755-5770 (DOI: 10.1175/2010JCLI3530.1).

Total Volume:
14.52 MB
Data Formats:
ASCII (see dataset documentation)
Related RDA Datasets:
Global Historical Climatology Net (GHCN) Version 2 Temperature, Precipitation, Pressure
GPCP Version 2.0 Combined Precipitation Data Set
Metadata Record:
Data License:
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