Vertical profiles, transport and removal

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AeroCom wiki discussion entry

Go back to AeroCom/Working group structure

See also summary of AeroCom/Recommendations

AeroCom working group Vertical profiles, transport and removal


Christiane Textor, Paul Ginoux, Rich Ferrare, Ralph Kahn, Oyvind Seeland, Philippe Stier,Dave Winker (&CALIPSO science team), Xhiahong Liu, Dorothy Koch, Trond Iverson, Graham Mann, Steve Ghan, Mian Chin, Hiuisheng Bian (GMI), Michael Schulz


  • Understanding of model diversity in spatial distribution and in removal processes
  • Evaluate simulated spatial distribution and processes with observations
  • Establish/quantify an acceptable diversity in global aerosol simulations
  • Find methods to evaluate process parameterisations
  • Define dedicated diagnostics of model results
  • Elaborate recommendations
  • Collect data for model evaluation (vertical profiles&processes) including uncertainty
  • This working group has a special focus on dust.

Specific scientific questions

  • How realistic are the simulated (vertical and horizontal) spatial aerosol distributions?
  • How to validate aerosol processes?
  • Is the diversity of simulated vertical dispersal caused by differences in transport or by removal processes?
  • How much complexity of aerosol models is necessary?
  • more

Processes and possible Diagnostics

Document model parameterisations
Assemble observed vertical profiles to evaluate models
PBL vs. Troposphere, look at mesoscale models
Exchange modules (use in the same GCM, link to GMI)

Short-term actions/experiments

Compare AeroCom data to observations
Redo simulation for 2003 with specific diagnostics
Passive tracer experiment (HTAP CO-experiments)
Validate model results with observed vertical LIDAR profiles: Rich and Christiane
Ensure a link to the scavenging workshop planned by NCAR and NASA (P. Rash and J. Rodriguez).

The first months of Calipso data should be a primary goal for a joint experiment. July-August 2006. Emissions from biomass burning should be up to date. Charles Ichoku proposed to prepare an emission dataset based on radiative power energy and MODIS fire spots. Guido van der Werf is investigating the burnt area product readiness.

Data to look at

  • vertical distribution

ground-based networks: lidar backscatter (corrected), extinction ARM MPLNET EARLINET
satellites: GLASS, MISR?, CALIPSO aircraft campaigns

  • horizontal distribution

station data (surf conc) networks
satellite data (e.g. on dust episodes to pin down horizontal transport)

  • processes

wet deposition of SO4?

Contact persons/experts

provide vertical profile LIDAR data: Rich Ferrare
CALIPSO: Dave Winker
MISR: Ralph Kahn
Access to AeroCom data base: Christiane Textor
Dust questions: Paul Ginoux