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REM Calgrid Model: Transport and Aerosol Formation in Europe-Germany

This model by A. Kerschbaumer focuses on aerosol formation, transport, and removal processes in Europe, with nested scales including Germany and urban areas like Berlin. It simulates PM10 and primary/secondary aerosols using a dynamic multi-layer mesh and specialized modules. The setup includes emission data, land use information, and a vertical coordinate system optimized for accuracy.

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REM Calgrid Model: Transport and Aerosol Formation in Europe-Germany

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  1. REM_Calgrid Andreas Kerschbaumer

  2. CTM REM_Calgrid • ONE-WAY NESTED MODEL CHAIN for • Regional Scale (Europe, Germany) • Urban Scale (Agglomeration area) • TRANSPORT IN THE LOWER TROPOSPHERE • PHOTOCHEMICAL TRANSFORMATIONS • INORGANIC AND ORGANIC AEROSOL FORMATION • DRY AND WET REMOVAL PROCESSES • LONG TERM APPLICATIONS A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  3. CTM REM_Calgrid Nest 1: Germany 16x14 km² Europe 30x30 km² • Nesting • capability Nest 2: Berlin-Brandenburg: 4x4 km²Nest 3: Berlin 1x1 km² A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  4. CTM REM_Calgrid • Generalized horizontal coordinate systems • Dynamic and fixed multi-layer vertical mesh • CBM4 including Carter‘s 1-Product Isoprene scheme and (simple ) SO2 oxidation to SO4 • No aqueous-phase (cloud) chemistry • equilibrium inorganic aerosol module ISORROPIA • Equilibrium organic aerosol module SORGAM • Deposition Module DEPAC • Diagnostic Meteorology (optimum interpolation) • Emissions data interface for long term applications (On the fly calculations of hourly anthropogenic and biogenic emissions, scenario options) A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  5. CTM REM_Calgrid • PM10 Simulation in REM_Calgrid • Coarse (2.5 – 10 µm) and fine (< 2,5µm) fraction • Primary Aerosol – directly emitted: • elemental carbon (EC), • Organic carbon (OM) (fraction of PM10-emissions) • Rest (mainly coarse minerals) (wind-blown dust, re-suspension) • Secondary Aerosol – chemical transformation: • inorganic Aerosols (SO42-, NO3-, NH4+, Cl-, Na+) • organic Aerosols (SOA) A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  6. CTM REM_Calgrid • Vertical Coordinate A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  7. CTM REM_Calgrid • Landuse data-base based on • Corine with some extra-information about • Tree species • BIOGENIC EMISSIONS. A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  8. CTM REM_Calgrid • Loosmore und Hunt [2000]: • All PM is assumed to be PM 2,5 • Claiborn et al [1998],Gillette und Passi [1988] • Dependence on humidity on surface: rain-parameterised A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  9. CTM REM_Calgrid • MODELL SET-UP for POMI: • Adaptation of boundary conditions • Adaptation of Meteorology • Adaptation of Emissions • Horizontal Grid: lat-lon-coordinates • Zooming Region over Po-Valley area (0.5/8)°x(0.5/8)° (ca 4x4 km) • Zooming Region over Milan (0.5/16)° x (0.25/16)° (ca.2x2km) • Vertical Structure: dynamic layers dependent on mixing height A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  10. CTM REM_Calgrid • MODELL SET-UP for POMI: • Interpolation from lat-lon grids to UTM Grids • Delivered layer: first vertical RCG layer representative for surface concentrations. • Some work already done within CITY-DELTA-Project: • Topography • Landuse • Emission routines • MM5-Meteorology-routines A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

  11. CTM REM_Calgrid • Good luck and successful collaboration!!!! A. Kerschbaumer, 07.03.2008 Ispra, JRC POMI

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