Potential Evapotranspiration
Entry ID: geodata_0138

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Summary
Abstract: The Mean Annual Potential Evapotranspiration (PET) digital data set was calculated using the Thornthwaite formula. This method for estimating PET requires only two variables, mean monthly temperature values, and the average monthly number of daylight hours. Also, the Thornthwaite empirical method was chosen in this case to estimate PET, because other more theoretical methods (e.g. Penman's formula) require greater in-situ measurements of meteorological parameters than are readily available.
Related URL
Description: Search and access the data from the UNEP Environmental Data Explorer.
Geographic Coverage
Spatial coordinates   
  N: -60.5   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Title: Potential Evapotranspiration
Dataset Release Date: 2001-01-01
Temporal Coverage
Start Date: 1994-01-01
Stop Date: 1994-12-31
ISO Topic Category
Use Constraints Public
Data Center
Global Resource Information Database - Geneva, Division of Early Warning and Assessment, United Nations Environment Programme Supplemental Info
Data Center URL: http://www.grid.unep.ch/

Data Center Personnel
Name: RONALD G. WITT
Phone: (+41-22) 917-8294/5
Fax: (+41-22) 917-8029
Email: Ron.Witt at grid.unep.ch
Contact Address:
International Environment House
City: Geneva
Postal Code: CH-1219
Country: SWITZERLAND
Personnel
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Email: geo at unepgrid.ch
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2013-02-21
Last DIF Revision Date: 2013-03-08
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