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African Domain

African Domain. Includes: NE Africa W Africa S Africa. Motivation/Mid-term Goals. Land use change/sensitivity/agriculture: Regional attribution What’s expected in individual regions? Forcings? Land use impacts as part of climate change Africanized model (includes baseline sim.)

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African Domain

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  1. African Domain Includes: NE Africa W Africa S Africa

  2. Motivation/Mid-term Goals • Land use change/sensitivity/agriculture: • Regional attribution • What’s expected in individual regions? • Forcings? • Land use impacts as part of climate change • Africanized model (includes baseline sim.) • Foci on precip, H2O cycle, surface energy balance, temp, crop model (Bill and Lisa for connections) • Engage with external forces/professionals • Engage aerosol studies. • Contribute to IPCC 4th Assessment Report.

  3. African Networking • Domain sizes: • NE Africa (lat 40N 10S; lon 18E 60E; 100x88) • W Africa (lat 40N 5S; lon 25W 22E; 90x94) • S Africa (lat 5N 40S; lon 0E/W 57E; 90x114) • Team leaders: • NE: Hasanean M. • W: Ernest A. • S: Anne B. • Project ideas: • Mosaic of land use • Aerosols and convection (ICTP collaboration)

  4. ← Lat 40N 5S; Long 25W 22E African Domains ↑ Lat 40N 10S; Long 18E 60E ← Lat 5N 40S; Long 0E/W 57E

  5. To do: • Center lines for domains. • Projection • Short runs to test/compare over domain, ~1997-2001 for: • NE: NDJFM • W: JJAS • S: DJF & JJA • Baseline simulation. • Literature review on land use, etc… in individual domains. • Land use variables: ppt, temp, runoff, clouds (1984-1989), convection, ITCZ.

  6. Model parameters • Grell and Betts-Miller convection schemes • Use default baseline • .gif images to compare with similar intervals (posted on web) • Idea for live-access server betw groups (long-term)

  7. Land use in NE Africa • Aerosols: linked to dust emissions; examine incoming tracers, using offline computations? • Reforestation experiments in Egypt; deforestation in Ethiopia – ppt, runoff, Nile river flow or not.

  8. Land Use for W Africa • Lake Chad. • Nigeria: deforestation 2.8%/a; savanna movement; Sahel movement. • Investigate driving forces of above in W Africa: change forests to cropland to examine deforestation effects. • Aerosols: linked to fire/gas/dust emissions; examine incoming tracers, using offline computations?

  9. Land Use for S Africa • Aerosols: linked to fire emissions; examine incoming tracers, using offline computations? • Literature review for further case studies.

  10. Milestones • W Africa associates with ICTP and Jeremy • NE Africa assoc. Greg and Nellie • S Africa based in CT/Pta, SA • Due date for: • Short runs: Aug. 2003 • Long runs: mid 2004 • Perturbation runs: mid 2004-early 2005 • Need planning workshop (Egypt?) for: • Long runs • Logistics • Target date for workshop: early Nov 2003 in Egypt  ! • Writing workshop 2005

  11. Other Issues • Computing resources. • Visiting other institutions: • Computing • Writing (thinking time) • Data storage. • Etc…

  12. Additional issues/needs • Resolution (high res. exp.) with Jeremy. • Emissions data (Fabien) • Add betts-miller scheme (Bi) • Computing needs (need computers for west africa runs) • Late 2003 meeting • Subgrid parameterization

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