Precipitation gauge measurements over land from the GHCN-v2 (Global Historical Climatology Network version 2) are interpolated onto 3 grids: at 0.5, 1 and 2.5 degree resolutions via optimal interpolation. Note: As of May, 2011 the GHCN version 3 station data set is available.
National Center for Atmospheric Research Staff (Eds). Last modified 04 Feb 2019. "The Climate Data Guide: Precipitation Reconstruction Land (PREC/L): 1948-present." Retrieved from https://climatedataguide.ucar.edu/climate-data/precipitation-reconstruction-land-precl-1948-present.
Funding: NSF | National Science Foundation
Based at: NCAR | National Center for Atmospheric Research
A Project of: Climate Analysis Section in Climate and Global Dynamics Laboratory
Created by: Climate Data Guide PIs and Staff