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Africa Soil Information Service (AfSIS): Topographic Wetness Index (TWI)
Entry ID:
ICRAF_AfSIS_TWI
Summary
Abstract:
The Africa Soil Information Service (AfSIS): Topographic Wetness Index (TWI) is a 90m raster dataset showing zones of increased soil moisture where the landscape area contributing runoff is large and slopes are low. The topographic wetness index, originally developed by Beven and Kirkby in 1979, provides a measure of wetness conditions at the catchment scale. This dataset combines local upslope ...
Related URL
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
Data Set Citation
Dataset Originator/Creator:
Vagen, T.-G.
Dataset Title:
Africa Soil Information Service (AfSIS): Topographic Wetness Index (TWI)
Dataset Release Date:
2010
Dataset Release Place:
Palisades, NY and Nairobi, Kenya
Dataset Publisher:
Center for Tropical Agriculture - Tropical Soil Biology and Fertility Institute (CIAT-TSBF), World Agroforestry Centre (ICRAF), Center for International Earth Science Information Network (CIESIN), Columbia University
Data Presentation Form:
map, raster digital data
Online Resource:
http://africasoils.net/
Location Keywords
Data Resolution
Latitude Resolution:
30m
Longitude Resolution: 30m Science Keywords
ISO Topic Category
Access Constraints
None
Use Constraints
None
Ancillary Keywords
Data Set Progress
IN WORK
Originating Center
Data Center
Distribution
Distribution Media:
WWW
Fees:
None
Personnel
Creation and Review Dates
Last DIF Revision Date:
2004-04-20
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- Webmaster: Monica Holland
- Responsible NASA Official: Lola Olsen
- Last updated: May 2013
