1. Emission inventories: a few issues Claire GRANIER
Service d’Aeronomie / IPSL, Paris, France
Also at: Max Planck Institute for Meteorology, Hamburg, Germany
and CIRES/NOAA Aeronomy Laboratory, Boulder, USA

2. Development if international databases
Within:
 the GEIA (Global Emissions Inventory Activity) project of IGBP
Co-chairs: A. Guenther (NCAR, Boulder, USA) and C. Granier
the ACCENT (Atmospheric Composition Change) European Network
Version 2 of the GEIA database developed as part of ACCENT
First (global) inventories of GEIA-2 will
be released ~ June, 15
POET ( )
RETRO ( )
Tools will be soon available:
visualization
comparisons
regridding
formats

3. A few issues
Consistency between inventories:
 gaseous/aerosols and VOCs speciation
 spatial: local, regional and global
 More links between communities: national/international and
international projects (organize an international workshop?)
Natural emissions
 from static inventories to interactive parameterizations/models to take into account impact of meteorology, climate change and land-use change. Database of ancillary data under development within
GEIA and ACCENT (more participants welcome).
Verification of emissions
 intercomparisons of inventories and input data (emission factors, activity data, fire counts/area burned, etc.)
 Inverse modeling : is currently limited to a few species (CO, NO2) at the global scale. Has started to be used for local/regional
emissions. Methods still under development, an intercomparison
could be organized.