gems aerosol wp2 refinement of aerosol emission sources m.sofiev air quality research finnish...
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GEMS AEROSOL WP2 refinement of aerosol
emission sources
M.SofievAir Quality Research
Finnish Meteorological Institute
Tasks of WP2 (emission)
• Task 2.1 Update and assimilation of the anthropogenic emission inventories of aerosol and its precursors.
• Task 2.2. Assimilation of information on the wild fires
• Task 2.3. Quantification of the wind-blown dust emission from desert areas
• Task 2.4. Quantification of the wind-blown sea salt emission
• Task 2.5. Sources of stratospheric aerosols
Information flows in AER WP2
AER_2.1data bases
AER_3Data
assimilation
GRG
RAQ
ESAEUMETSAT
NASA
Methodology,data
Globalaerosol
monitoringsystem
Emission data
GEIA / ACCENT / RETRO /
EMEP
Fire counts
Emission data
AER_2.2wild fires
AER_2.3dust emis.
AER_2.4sea salt emis
AER_2.5stratosph.
SO2 data
Data, modules
WP2 Gant chart
Task 2.1: anthropogenic emission
• An overview of the existing emission inventories (FMI, HALO paper)– 10 official and scientific inventories– nearly all needed species are covered– strongly varying coverage and resolution, overlaps and
differences between the methodologies and reference periods
– necessity to have a mapping of the databases to the best-represented regions and species
• During the kick-off the emission task force is going to meet and agree upon a harmonised approach
Task 2.2: wild fires
• Two sources of information: fire counts (suitable for NRT applications) and burnt areas (past analysis)
• An inventory of fire-count products has been made (HALO paper)– there are several near-real-time products available– fire counts tend to strongly under-estimate the fire area,
which might require recalibration of more sophisticated improvements
• Modification for transforming GWEM (emission composition and total mass) to a NRT instrument and its linking with BUOYANT model (plume elevation) are being considered
Task 2.3 wind-blown dust
• Basic schemes: Balkanski et al., Tegen et al.
• ORCHIDEE vegetation dynamic model for dynamic land characteristics
Task 2.4 sea-salt emission
• Consideration of wide size spectrum of particles is needed
• Several schemes are available (Monahan, Smith&Harrison, Andreas), as well as their intercomparison
Task 2.4 sea-salt emission (2)
Task 2.5stratospheric sulphates
• Main stratospheric source is: volcanic SO2 from eruptions
• Other sources are primarily tropospheric and thus will be treated via troposphere-stratosphere exchange
• Main method for SO2 from volcanoes: data assimilation (after 18 month of the project)
First-step tasks
• Discuss and implement anthropogenic emission database – in a harmonized manner with other sub-projects
• Develop a scheme of wild fires accounting from hot-spot satellite products and start testing and calibration of the model
• Start implementation of existing schemes for wind-blown dust and sea-salt emissions