Historical Monthly and Derived Precipitation Products Downscaled from CRU TS data via the delta method - 2 km

This set of files includes downscaled historical estimates of monthly totals, and derived annual, seasonal, and decadal means of monthly total precipitation (in millimeters, no unit conversion necessary) from 1901 - 2006 (CRU TS 3.0) or 2009 (CRU TS 3.1) or 2015 (CRU TS 4.0) at 2km x 2km spatial resolution.

CRU TS 4.0 is only available as monthly files.

The downscaling process utilizes PRISM climatological datasets from 1961-1990.

Brief descriptions of the datasets:

Monthly precipitation totals: The total precipitation, in mm, for the month.

For Decadal outputs:
1. Decadal Average Total Monthly Precipitation: 10 year average of total monthly precipitation. Example: All January precipitation files for a decade are added together and divided by ten.
2. Decadal Average Seasonal Precipitation Totals: 10 year average of seasonal precipitation totals. Example: MAM seasonal totals for every year in a decade are added together and divided by ten.
3. Decadal Average Annual Precipitation Totals: 10 year average of annual cumulative precipitation.

For seasonal means, the four seasons are referred to by the first letter of 3 months making up that season:

  • JJA: summer (June, July, August)

  • SON: fall (September, October, November)

  • DJF: winter (December, January, February)

  • MAM: spring (March, April, May)

Data and Resources

Additional Info

Spatial resolution

2000 meters

Temporal extent

Start date: January 1901

End date: December 2015


The following people worked on producing this data set:

  • Matthew Leonawicz
  • Michael Lindgren
  • Tom Kurkowski
  • Scott Rupp
  • John Walsh
Field Value
Source http://data.snap.uaf.edu/data/Base/AK_CAN_2km/historical/CRU_TS/Historical_Monthly_and_Derived_Precipitation_Products_2km_CRU_TS/
Maintainer Tom Kurkowski
Version 1.0.0
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contact-email takurkowski@alaska.edu
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credits ["Matthew Leonawicz", "Michael Lindgren", "Tom Kurkowski", "Scott Rupp", "John Walsh"]
dataset-reference-date [{"type": "revision", "value": "2017-09-15T00:00:00"}]
download-url http://data.snap.uaf.edu/data/Base/AK_CAN_2km/historical/CRU_TS/Historical_Monthly_and_Derived_Precipitation_Products_2km_CRU_TS/
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license Creative Commons Attribution 4.0
license_url http://creativecommons.org/licenses/by/4.0/
metadata-date 2019-02-04T16:29:43
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temporal-extent-begin 1901-01-15T00:00:00
temporal-extent-end 2015-12-15T00:00:00