Vertical profiles, transport and removal

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AeroCom wiki discussion entry

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See also summary of AeroCom/Recommendations

AeroCom working group Vertical profiles, transport and removal

Participants for analysis

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 more?

Participants for experiments

Goals

  • 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.

Processes and possible Diagnostics

Short-term actions/experiments

Data to look at

Objective: 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

Methods: 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)

Data to look:  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

Specific tasks Validate model results with observed vertical LIDAR profiles: Rich and Christiane