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AHN AND TATEISHI MONTHLY POTENTIAL & ACTUAL EVAPOTRANSPIRATION & WATER BALANCE Entry ID: GNVd0183_104 |
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Summary
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Abstract:
This dataset comprises 39 raster maps of annual and monthly Potential Evapotranspiration, Actual Evapotranspiration and Water Balance ( all in mm units). They cover the whole world at a resolution of 30 min (approximately 55 km), and are representative of a time period extending from, approximately, 1920 to 1980. This compilation was published in 1994 by C.H. Ahn and R. Tateishi. Monthly Potential Evapotranspiration was estimated applying the Priestley-Taylor formula to the following global datasets provided by US EPA (Global Ecosystems Database) and UNEP/GRID Geneva: - Edwards Global Gridded Elevation and Bathymetry (ETOPO5) - IIASA Mean Monthly Cloudiness: LCCLD01 - LCCLD12. - Matthews Seasonal Albedo: MALBFA - MALBWN, from which monthly values were interpolated. - Legates and Willmott Monthly Average Surface Air Temperature and Precipitation (re-gridded): LCWPR01-LCWPR12, LWTMP01- LWTMP12. - Bouwmans Soil Water Holding Capacity. Each member of the dataset consists of a 720 columns by 360 lines map, with information coded in two byte signed integers. Originally delivered as IDRISI *.img (518,400 bytes) and *.doc files, the data is stored, at UNEP/GRID, under a generic binary format. The map projection is Plate Carre. References: - Ahn C.-H. and Tateishi R., 1994. Development of a Global 30-minute grid Potential Evapotranspiration Data Set. Journal of the Japan Soc. Photogrammetry and Remote Sensing, 33(2): 12-21. - Ahn C.-H. and Tateishi R., 1994. Estimation of Potential Evapotranspiration fro Global Data Sets. Proc. ISPRS Comm. IV Symposium, Mapping and Geographic Information Systems, May 31 - June 3, Athens, Georgia, USA, 30/4): 586-593. - Ahn C.-H. and Tateishi R., 1994. Development of Global Evapotranspiration and Water Balance Data Sets. Journal of the Japan Soc. Photogrammetry and Remote Sensing, submitted. Address of authors Remote Sensing and Image Research Center Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263 Japan.
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Description: Access data for the Ahn and Tateishi monthly potential & actual evapotranspiration & water bal. |
Geographic Coverage
| N: 90.0 | S: -90.0 | E: 180.0 | W: -180.0 |
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Location Keywords
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GEOGRAPHIC REGION
> GLOBAL
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Science Keywords
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >EVAPORATION [Definition] |
| ATMOSPHERE >PRECIPITATION [Definition] |
| HUMAN DIMENSIONS >ENVIRONMENTAL GOVERNANCE/MANAGEMENT >WATER MANAGEMENT [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT |
Access Constraints
| Public |
Keywords
| Atmosphere > Atmospheric Processes > Evaporation |
| EVAPOTRANSPIRATION |
| Freshwater > Drinking Water Supply > Water |
| WATER BALANCE |
Originating Center
| UNEP/EAD/GRID - Geneva |
Data Center
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Global Resource Information Database - Geneva, Division of Early Warning and Assessment, United Nations Environment Programme
[Information]
Data Center URL: http://www.grid.unep.ch/
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Personnel
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HY
DAO Role: TECHNICAL CONTACT Phone: 41-22-917-82-25 Fax: 41-22-917-80-29 Email: Hy.Dao at unep.org Contact Address: Head of Metadata & Socio-Economics Unit City: Geneva Postal Code: 1219 Country: SWITZERLAND |
Creation and Review Dates
DIF Creation Date:
2008-11-21
Last DIF Revision Date:
2010-07-28
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