Difference between revisions of "Dust"

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Compare dust simulations to multiple observational datasets<br>
 
Compare dust simulations to multiple observational datasets<br>
 
Recommend properties for dust size and refractive index<br>
 
Recommend properties for dust size and refractive index<br>
 +
 +
===Short term actions===
 +
 +
Provide specifications for a land use related dust source
 +
to be implemented by participating modellers (Mahowald)<br>
 +
Pull out of dust variables for one AeroCom model (Schulz)<br>
 +
passed on to R. Miller for initial testing of Cakmur analysis
  
 
===Processes and possible Diagnostics===
 
===Processes and possible Diagnostics===

Revision as of 06:35, January 16, 2007

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AeroCom working group DUST

Participants

Ginoux, Balkanski, Mahowald, Schulz, Miller, Tegen, Zender, Winker, Mann, Takemura, (Textor)

- NEXT Telephone conference: probably march 07, organised from NCAR

Goals

Investigate the possible impact of anthropogenic dust sources
Compare dust simulations to multiple observational datasets
Recommend properties for dust size and refractive index

Short term actions

Provide specifications for a land use related dust source to be implemented by participating modellers (Mahowald)
Pull out of dust variables for one AeroCom model (Schulz)
passed on to R. Miller for initial testing of Cakmur analysis

Processes and possible Diagnostics

Dust erosion - wind frequency and speed ; threshold velocities; effective source fluxes; source size distribution

Dust settling - dry removal velocities per size bin;

Wet Dust removal - wet scavenging efficients; vertical distribution; wet deposition of Calcium, dust;

Scattering and absorption - refractive index; AOD; size; absorption

Short-term actions/experiments

Organise regular teleconferences

Prepare a natural and an anthropogenic dust source for a joint experiment
Follow up on ideas from earlier Mahowald publications.

Assemble observations
(Visibility, IDDI, MISR, MODIS, MODIS Deepblue, Deposition, Aeronet, Aeroce, Calipso, Asian dust observations, Ca concentrations in rain)
Retrieve from AeroCom database dust variables and wind speed fields

Eventually participate in dust conference in Italy

Data to look at

The AeroCom database has unanalysed data on dust deposition and wind speed statistics in some models.

Aeronet dust dominated sites

Refractive index and size in literature

Dust, Fe and Ca concentrations in air and precipitation

Satellite AOD in dust dominated regions (MISR, MODIS, TOMS, DEEPBLUE-MODIS, CALIPSO)

Fine mode AOD in dust regions?

Sink repartitioning among AeroCom models Figure taken from Textor et al., ACP 2006