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Predict. Perform. Profit. Probabilistic rainfall predictions for tropical agriculture in West Africa Andreas Vallgren, PhD Chief Science Officer, Co-founder [email protected]

predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

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Page 1: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

P r e d i c t . P e r f o r m . P r o f i t .

Probabilistic rainfallpredictions for tropical

agriculture in West AfricaAndreas Vallgren, PhD

Chief Science Officer, Co-founder [email protected]

Page 2: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

PERFORMANCE OF GLOBAL NWP MODELS NO BETTER THAN CLIMATOLOGY…

Page 3: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

TROPICAL WEATHER FORECASTING & UNCERTAINTY

29 May 2018

18 Oct 2019

Page 4: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

TROPICAL WEATHER FORECASTING & UNCERTAINTY

Page 5: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

actual (48h later)

THE NEED FOR REGIONAL MODELING

Page 6: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

Reliability: compares each chance category(i.e. 0%, 30%, 60%, 90%) against how manytimes it actually rained for each category.

RELIABILITY COMPARISON: IGNITIA ENSEMBLE VS NCEP GFS

Page 7: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

Land planning Crop planning Seed purchase

Fertilizer Sowing Labour

Chemicals Harvest Pack and Transport

SOLVES CRITICAL TIMING PROBLEMS FOR A FARMER

CREATES RESILIEN

CE

RISK REDUCTI

ON

ENHANCES FOOD

SECURITY

INCREASES INCOME

Page 8: predictionsfor tropical · Fri 10/18 290 1 230C Thunderstorms 13.77 mm sat 10/19 280 240C Thunderstorms 11.76 mm sun 10,20 280 1 Thunderstorms 5.09 mm Mon 10/21 290 1 Scattered

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