Historical and Projected Daily Quantile Mapped Temperatures - 2.5 degrees CMIP5/AR5

This data includes quantile-mapped historical and projected model runs of AR5 daily mean mean temperature (tas, degrees C) for each day of every year from 1958 - 2100 at 2.5 x 2.5 degree spatial resolution across 3 AR5 models. They are 365 multi-band geotiff files, one file per year, each band representing one day of the year, with no leap years.


  • Models used:
    • AR5 GCMs (historical runs, 1850-2005)
      • GFDL-CM3
      • IPSL-CM5A-LR
      • MRI-CGCM
    • RCPs (projected runs, 2006-2100)
      • 6.0
      • 8.5

Quantile mapping methodology:

GCMs were quantile-mapped with respect to 1958-2001 ERA-40 reanalysis data by various methods as documented in:
Gudmundsson, L., Bremnes, J. B., Haugen, J. E., and Engen Skaugen, T.: Technical Note: Downscaling RCM precipitation to the station scale using quantile mapping – a comparison of methods, Hydrol. Earth Syst. Sci. Discuss., 9, 6185-6201, doi:10.5194/hessd-9-6185-2012, 2012.

A similar comparison of methods was made and the Local Linear Least Squares Regression quantile mapping method, available in the R package 'qmap', was chosen as the most appropriate method. Deltas resulting from the mapping were then applied to 2002-2100 GCM output to complete the 1958-2100 quantile-mapped GCM products.

Model selection methodology

  • Per Walsh et al. 2008. Global Climate Model Performance over Alaska and Greenland. Journal of Climate. v. 21 pp. 6156-6174.
  • Model selection used in AR5 products is more rigorous, and a publication is in preparation (Leonawicz M. and Walsh J. 20xx).

Data and Resources

Additional Info

Spatial resolution

2.5 degree

Temporal extent

Start date: January 1958

End date: December 2100


The following people worked on producing this data set:

  • Matthew Leonawicz
  • Angelica Floyd
  • Tom Kurkowski
  • Michael Lindgren
  • John Walsh
  • Scott Rupp
Field Value
Source http://data.snap.uaf.edu/data/Base/World/Historical_and_Projected_Daily_Quantile_Mapped_Temperatures_2_5_degrees_CMIP5_AR5/
Maintainer Tom Kurkowski
Version 1.0.0
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