Historical Monthly and Derived Precipitation Products - 771m CRU TS

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) at 771 x 771 meter spatial resolution.

Date (Publication)

Credit: Matthew Leonawicz

Credit: Michael Lindgren

Credit: Tom Kurkowski

Credit: Scott Rupp

Credit: John Walsh

Status: On going

Point of contact

Scenarios Network for Alaska and Arctic Planning

Maintenance and update frequency: As needed

Theme

precipitation
historical
modeled

Use constraints: License

Other constraints: https://creativecommons.org/licenses/by/4.0/

Spatial representation type: Grid

Distance: 771 m

Metadata language: eng

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere

Begin date: 1900-01-15

End date: 2009-12-15

Supplemental Information: 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)

Unique resource identifier: EPSG:3338

Number of dimensions: 2

Dimension name: Row

Dimension size: 2557

Resolution: 771 m

Dimension name: Column

Dimension size: 4762

Resolution: 771 m

Cell geometry: Area

Distribution format

GeoTIFF ( 1.0 )

OnLine resource: URL to web-accessible folder containing downloads for this data set. ( WWW:LINK-1.0-http--link )
URL to web-accessible folder containing downloads for this data set.

Hierarchy level: Dataset

Statement: SNAP downscaled data products are value added products that build off of other datasets that have been accepted by the scientific community as some of the highest quality climate data available.