Potential Evapotranspiration 1920-1929: CRU Historical Dataset

Metadata Updated: November 12, 2020

Potential Evapotranspiration (PET): These data represent decadal mean totals of potential evapotranspiration estimates (mm). The file name specifies the decade the raster represents. For example, a file named pet_mean_mm_decadal_CRU_Historical_annual_1930-1939.tif represents the decade spanning 1930-1939. The data were generated by using the Hamon equation and output from a statistically downscaled version of the Hadley Centre's CRU TS3.0 observational dataset. Data are at 2km x 2km resolution, and all data are stored in geotiffs. Calculations were performed using R 2.12.1 and 2.12.2 for Mac OS Leopard, and data were formatted into geotiffs using the raster and rgdal packages. Users are reminded that the PET estimates include the inherent uncertainty of model projections. In addition, the methods used to derive PET from temperature require a number of assumptions, which future conditions may or may not meet. In particular, these methods as implemented assume that cloudcover and relative humidity remain constant. This may or may not be true. Hamon Equation: These data were derived by applying the Hamon equation as outlined in Lu et al. (2005) to monthly average temperature downscaled by SNAP.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date 2019-09-09T01:07:23-08:00
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) November 2, 2015 (lastUpdate), January 17, 2012 (publication)
Frequency Of Update null

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date 2019-09-09T01:07:23-08:00
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) November 2, 2015 (lastUpdate), January 17, 2012 (publication)
Responsible Party (Point of Contact); Arctic Landscape Conservation Cooperative (Point of Contact, Publisher)
Contact Email
Guid 4c54ebb2-1359-4094-8976-5daa72ee1a0e
Access Constraints
Bbox East Long -121.29750762783
Bbox North Lat 71.437468665965
Bbox South Lat 51.376135899163
Bbox West Long -179.99998854085
Coupled Resource
Frequency Of Update null
Licence While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, the Arctic Landscape Conservation Cooperative cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. The Arctic Landscape Conservation Cooperative makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty., null
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System 3338
Spatial Harvester True

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