Model Future: Nesting with Regional Models

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Presentation transcript:

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) 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)

Overview Regional models used Air pollution problems 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

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

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)