The ICTP RegCM System and The ICTP RegCM System and Aerosol Modeling Aerosol Modeling F. Giorgi, F. Solmon, A. Zakey F. Giorgi, F. Solmon, A. Zakey ICTP, Trieste, Italy ICTP, Trieste, Italy Contributions from Contributions from A. Shalaby, A. Konare, A. Shalaby, A. Konare, Goldschmidt 2009 Conference, Davos, Switzerland, 22-26 Goldschmidt 2009 Conference, Davos, Switzerland, 22-26 June 2009 June 2009
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The ICTP RegCM System and Aerosol Modeling F. Giorgi , F. Solmon , A. Zakey
The ICTP RegCM System and Aerosol Modeling F. Giorgi , F. Solmon , A. Zakey ICTP, Trieste, Italy Contributions from A. Shalaby , A. Konare ,. Goldschmidt 2009 Conference, Davos, Switzerland, 22-26 June 2009. The ICTP Regional Climate Model RegCM4. Used for a wide range - PowerPoint PPT Presentation
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The ICTP RegCM System andThe ICTP RegCM System andAerosol ModelingAerosol Modeling
F. Giorgi, F. Solmon, A. ZakeyF. Giorgi, F. Solmon, A. ZakeyICTP, Trieste, ItalyICTP, Trieste, ItalyContributions fromContributions from
A. Shalaby, A. Konare, A. Shalaby, A. Konare,
Goldschmidt 2009 Conference, Davos, Switzerland, 22-26 June 2009 Goldschmidt 2009 Conference, Davos, Switzerland, 22-26 June 2009
Flexible, user-friendlymodeling system
Adaptable to any regionof the World
Used by a wide scientific community
Used for a wide rangeof applications
Coupled atmosphere –ocean version
Capability of interactivevegetation (CLM, IBIS)
Capability of interactiveaerosol/chemistry
The ICTP Regional Climate ModelThe ICTP Regional Climate Model
RegCM4RegCM4
Sample of RegCM domains usedSample of RegCM domains used
ΔX=10-120 KM
Tracer model / RegCM3
lpdepcumwlswCUMVH QQDRRSTFFVt ,,
Transport Removal terms
Primary Emissions
Physico – chemical transformations
Strongly dependent on the nature of the tracer
General approach
Particles and chemical species considered (12 tracers).
““Simple” Aerosols in RegCM4Simple” Aerosols in RegCM4
Qian and Giorgi 1999; Qian et al. 2001; Solmon et al. 2006; Zakey et al. 2006; 2008 Qian and Giorgi 1999; Qian et al. 2001; Solmon et al. 2006; Zakey et al. 2006; 2008
Climate-aerosol model couplingClimate-aerosol model coupling
• During the last decades East Asia has been one of the During the last decades East Asia has been one of the most rapidly developing regions of the worldmost rapidly developing regions of the world
• As a result, anthropogenic aerosol emissions over the As a result, anthropogenic aerosol emissions over the region have considerably increased, thereby (possibly) region have considerably increased, thereby (possibly) affecting the climate of the region affecting the climate of the region
• A series of studies investigated the possible regional A series of studies investigated the possible regional climatic effects of anthropogenic aerosols over East Asiaclimatic effects of anthropogenic aerosols over East Asia– Qian and Giorgi (1999,2000), Qian et al. (2001, 2003), Chameides et al. Qian and Giorgi (1999,2000), Qian et al. (2001, 2003), Chameides et al.
(1999,2002),Streets and Waldhoff (2000),Kaiser and Qian (2002),Giorgi (1999,2002),Streets and Waldhoff (2000),Kaiser and Qian (2002),Giorgi et al. (2002,2003)et al. (2002,2003)
Example IExample IEast AsiaEast Asia
Aerosol extinction coefficient Aerosol extinction coefficient averaged for 1981-1998averaged for 1981-1998Kaiser and Qian (2002)Kaiser and Qian (2002)
Change of observed mean Change of observed mean temperature (temperature (ooC) in ChinaC) in China
European partners)• AMMA (West Africa, ICTP, African partners)• CLARIS (South America, U. Sao Paulo)• RMIP (East Asia, CMA)• CORDEX (Multiple domains, RegCNET)