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EFFECT OF MODEL RESOLUTION VARIATION 1 ON THE SIMULATION OF PRECIPITATION OVER WEST AFRICA

EFFECT OF MODEL RESOLUTION VARIATION 1 ON THE SIMULATION OF PRECIPITATION OVER WEST AFRICA. MOTIVATION: 1998 FLOOD OVER WA SAHEL (>> NORMAL) NEED TO USE REGCM TO ATTEMPT SIMULATION OF THE 1998 FLOOD NEED TO FORECAST PRECIPITATION REGIMES IN WA TO SUPPORT CC IMPACT ASSESSMENT. 80km Domain

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EFFECT OF MODEL RESOLUTION VARIATION 1 ON THE SIMULATION OF PRECIPITATION OVER WEST AFRICA

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  1. EFFECT OF MODEL RESOLUTION VARIATION 1ON THE SIMULATION OF PRECIPITATION OVER WEST AFRICA • MOTIVATION: • 1998 FLOOD OVER WA SAHEL (>> NORMAL) • NEED TO USE REGCM TO ATTEMPT SIMULATION OF THE 1998 FLOOD • NEED TO FORECAST PRECIPITATION REGIMES IN WA TO SUPPORT CC IMPACT ASSESSMENT

  2. 80km Domain Map Projection : MERCATOR 48 grid points N - S 55 grid points E - W 18 vertical levels September 1998 40km Domain Map Projection : MERCATOR 96 grid points N - S 111 grid points E - W 18 vertical levels September 1998 DOMAIN PARAMETERS

  3. West African Topography

  4. MODEL PHYSICS • Cumulus param. Scheme: • Grell • Closure Assumption: • AS

  5. Results - Precipitation 40km 80km

  6. Results: Surf Air Temp

  7. Results: Evolution of Wind Fields

  8. Results: Evolution of Winds

  9. Evolution of Winds

  10. Evolution of Winds

  11. Evolution of Winds

  12. Evolution of Winds

  13. Evolution of Winds

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