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S. Faisal (Pakistan), P.Huszár (Slovakia), A.C. Pandey (India)

1. Simulation of Fog Over Northern Punjab (Pakistan & India) 2. Simulation of Emissions Over South Asia. S. Faisal (Pakistan), P.Huszár (Slovakia), A.C. Pandey (India). Group 1. ICTP Trieste, 2003. Domain Parameters. Grid: Southern Asia

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S. Faisal (Pakistan), P.Huszár (Slovakia), A.C. Pandey (India)

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  1. 1. Simulation of Fog Over Northern Punjab (Pakistan & India)2. Simulation of Emissions Over South Asia S. Faisal (Pakistan), P.Huszár (Slovakia), A.C. Pandey (India) Group 1 ICTP Trieste, 2003

  2. Domain Parameters • Grid: Southern Asia • Center point: • Latitude 22.00N • Longitude: 73.00E • Domain size: 90x70 • Horizontal Resolution: 80km • Number of vertical levels: 18(winter), 23(summer) • Model Top Pressure: 100mb(winter), 50mb(summer) • Projection: Rotated Mercator • Landuse dataset: NCAR/PSU10min resolution • Vegetation type: GLCC Vegetation

  3. RUN Parameters DATASETS • Fog Simulation: 1.Dec.-31.Dec, 1998 • Tracer Simulation: 1.Dec.-31.Dec,1998 (Emissions Taken from Dec 1997) • Monsoon Simulation: 1.June, 2002 – 31.June, 2002 • NCEP NNRP2 Re-analyses • OISST sea surface temperature • CRU dataset

  4. Domain Terrain

  5. Temperature Precipitation Model Fields CRU Data

  6. Significant Fog Over Northern Punjab Satellite View of The Fog in Visible Channel

  7. Specific humidity over investigated areas Specific Humidity at 780hPa

  8. Evidence of Fog Relative Humidity Wind 10m

  9. Haze Over North Indian Ocean

  10. Vertically Integrated Amount of Tracers & wind 940hPa– December 1998 Vertically Integrated Amount of Aerosols & Streamlines 1998 December

  11. Large scale & Convective rain deposition – December 1998

  12. Temperature Tracer Run Control Run

  13. Absorbed Solar Flux Tracer Run Control Run

  14. Precipitation Tracer Run Control Run

  15. Summer Monsoon Total precipitation (mm) 2002 June Precipitation field Wind field

  16. Summer Monsoon Circulation – June 2002

  17. Conclusions • RegCM3 is able to give signatures of fog in Northern Punjab in terms of specific and relative humidity. • The simulation of the vertically integrated emissions and its dispersal with wind in the month of December is close to the observed trends. • The effect of aerosols only on climate without black carbon due to fossil fuel burning seems to have negligible effect and inconclusive.

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