Post on 19-Jan-2016
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Nick van de Giesen (n.c.vandegiesen@tudelft.nl)
John Selker (OSU)
Trans-African Hydro-Meteorological Observatory
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Background
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60% world’s uncultivated arable land!
Background
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Background
WMO Stations
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Background
WMO Stations
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Background
WMO Stations
5,000
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Background
Leapfrog: 20,000 TAHMO Stations!
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Design
Principles
• Robust
• No moving parts
• No cavities
• Cheap (<$500)
• Self calibrating
• Cross calibrating
Picture: Jens Liebe
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Design
Principles
• Robust
• No moving parts
• No cavities
• Cheap (<$500)
• Self calibrating
• Cross calibrating
Picture: Jens Liebe
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Design
Principles
• Robust
• No moving parts
• No cavities
• Cheap (<$500)
• Self calibrating
• Cross calibrating
Picture: Jens Liebe
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Design
Principles
• Robust
• No moving parts
• No cavities
• Cheap (<$500)
• Self calibrating
• Cross calibrating
Picture: Jens Liebe
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Design
Three frustrations
• No data
• Expensive equipment, maintenance
• End with project
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Design
Precipitation
Joss-Waldvogel (acoustic)
Laser disdrometer
Video disdrometer Microwave disdrometer
>10,000 Euros
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Design
Precipitation
Coen Degen
Piezo ceramic element
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Design
Precipitation
Coen Degen
Sources: “Tropical raindrop anatomy,” S.K. Shariah et al. & “Newtonian drop impact with a solid surface”, B.L. Scheller and D.W. Bousfield
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Design
Precipitation
Coen Degen 10 7,348 10sE D
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Design
One sensor down… n to go!
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Design
Present model
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Operation
Business case: Insurance
• Droughts
• Floods
• Diseases?
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Operation
MoU
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Operation
Communication
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Education
School-2-School
• Develop environmental education package
• Teach children about their environment
• Teach children about their environmental
connectedness
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Education
Role out TAHMO
School-to-School
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Education
Role out TAHMO
High schoolscurriculum
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EducationInternational Climate Team - Idaho
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Education
School2School program
• Sister school
• Costs sharing
• Involvement
• Sharing ideas
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Education
Role out TAHMO
High schoolscurriculum
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Education
• Associate with schools• Develop environmental education package• Teach children about their environment• Teach children about their environmental
connectedness
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Education
Universities• Nairobi• Akure
Sensor Design Competition
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Education
In field calibration competition
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Next steps
Pilots
• Ghana
• Kenya
• Uganda
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Join!WWW.TAHMO.ORG
n.c.vandegiesen@tudelft.nl