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Model Future: Nesting with Regional Models

Model Future: Nesting with Regional Models. Second GEOS-CHEM User’s Meeting, April 4-6, 2005 Harvard University. Relevant Presentations. Linking GEOS-CHEM with CMAQ: consistency in meteorology and chemistry (Byun, U. Houston)

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Model Future: Nesting with Regional Models

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  1. Model Future:Nesting with Regional Models Second GEOS-CHEM User’s Meeting, April 4-6, 2005 Harvard University

  2. Relevant Presentations • Linking GEOS-CHEM with CMAQ: consistency in meteorology and chemistry (Byun, U. Houston) • Evaluation of the GEOS-CHEM/CMAQ inteface over China and US (Li , U. Tennessee) • Sensitivity of surface ozone in the U.S. to isoprne emissions and chemistry (Fiore, GFDL) • Aerosol simulations over North America (Donkelaar, Dalhousie) • Impact of trans-boundary transport of aerosols on regional air quality (In, U. Houston) • Origin and distribution of ozone for the Eastern Mediterranean region (Giannakopoulos, Athens) • Nesting GEOS-CHEM with a regional model for Greece (Tombrou-Tzella, Athens) • Effects of climate change on air quality (Wu, Harvard)

  3. Overview • Regional models used • Nested GEOS-CHEM (1deg x 1deg) • US urban//regional models (CMAQ, CAMx, UAM) • European urban/regional model (Chimere, EURAD?) • Use of other Global models (RAQMS, Mozart, etc…) • Air pollution problems • Long-rang transport of ozone & PM regional & urban scale • Isoprene emissions and chemistry • Global climate change and air quality • Nest modeling of Hg, POPS, etc

  4. Research Issues for Global-Regional Linkage • Harmonization of gas-phase chemistry • O3-NOx-HC chemistry of GEOS-CHEM • CB-4, SAPRC in urban/regional models • Isoprene chemistry • Harmonization of aerosol modules • Linking of consistent mass and number concentrations • Different modeling method: sectional vs. modal • Aerosol species represented (inorganic, EC, OC, PM ultra fine, fine, coarse) • Consistency in dynamics • GMAO and GISS global dynamics model and MM5, WRF, RAMS, … • Transport schemes (boundary fluxes) • State variables (p,T, u, v, q, other hydrometeors,).. • Topography, LULC, PBL heights, tropopause heights, et • Cloud mixing • Removal processes

  5. Research Issues for Global-Regional Linkage • Consistency in emissions inventories • GEIA vs. NEI99 and future year inventories • Regional emissions inventory issues – Canada, Mexico, Asia,…) • Dust mobilization parameterization • Biogenic emissions consistency (BEIS-3 vs. Megan Inventory) • Lightning NOx • Modeling/Numerics • On-line/off-line, frequency of data transfer, interface processor • Grid and coordinate representations, interpolation issues • Inverse modeling (Bayesian, Kalman filter, Adjoint methods) • Data assimilation (surface measurement, satellite data, special aircraft data)

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