Dust

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Go back to '''[[AeroCom]]''' wiki discussion  entry
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Go back to '''[[AeroCom]]''' wiki discussion  entry / '''[[AeroCom/Working group structure]]'''  
 
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Go back to '''[[AeroCom/Working group structure]]'''
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See also summary of '''[[AeroCom/Recommendations]]'''  
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Enter the '''[[Talk:Dust|Discussion on dust]]''' or click on the flag 'discussion' above.
 
Enter the '''[[Talk:Dust|Discussion on dust]]''' or click on the flag 'discussion' above.
 
  
 
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'''AeroCom working group DUST'''  
 
'''AeroCom working group DUST'''  
 
   
 
   
 
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===Participants===
===Participants for analysis===
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Ginoux, Balkanski, Mahowald, Schulz, Miller, Tegen, Zender,  
 
Ginoux, Balkanski, Mahowald, Schulz, Miller, Tegen, Zender,  
 
Winker, Mann, Takemura, (Textor)
 
Winker, Mann, Takemura, (Textor)
  
 
-
 
-
NEXT Telephone conference:
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NEXT Telephone conference: probably march 07, organised from NCAR
10th of January 17 UTC (= 18 Paris time, 12 ET, 10 Boulder Time?)<br>
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telephone number available from Michael Schulz<br>
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Participants having responded yes: Miller, Mahowald, Ginoux, Schulz
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Zender has prior commitments on Jan 10 from 1700-2100 UTC.
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I will continue to monitor developments on the Wiki, and I
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reaffirm my support and commitment for an extensible C&M tool--Charlie
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Steph Woodward will not be able to take part.  I hope I'll be free to
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participate in the next teleconference - Steph
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===Goals===
 
===Goals===
  
Investigate the possible impact of anthropogenic dust sources<br>
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Investigate the possible climate impact of anthropogenic dust sources<br>
 
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>
  
===Processes and possible Diagnostics===
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===Short term actions===
  
Dust erosion - wind frequency and speed ; threshold velocities;
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- Provide specifications for a land use related dust source
effective source fluxes; source size distribution
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to be implemented by participating modellers (Mahowald)<br>
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- Pull out of dust variables for one AeroCom model (Schulz)<br>
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- passed on to R. Miller for initial testing of Cakmur analysis<br>
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- establish an observational database beyond Cakmur et al and AeroCom<br>
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- revisit HTAP dust experiment design (see MS email to AeroCom in Dec)<br>
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- eventually come together at AGU Acapulco conference in May 2007<br>
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- suggest input for C. Zender for Perrugia conference
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===List of Observational data to be included in analysis===
  
Dust settling - dry removal velocities per size bin;
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Al in ocean water
  
Wet Dust removal - wet scavenging efficients; vertical distribution;
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Visibility
wet deposition of Calcium, dust;
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Scattering and absorption - refractive index; AOD; size; absorption
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IDDI index
  
===Short-term actions/experiments===
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Satellite AOD in dust dominated regions
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(MISR, MODIS, TOMS, DEEPBLUE-MODIS, CALIPSO, Aeronet, Calipso)
  
Organise regular teleconferences<br>
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Coarse mode satellite derived AOD in dust regions?
  
Prepare a natural and an anthropogenic dust source for a joint
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Deposition
experiment<br>Follow up on ideas from earlier Mahowald publications.
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DIRTMAP, Fe, Ca in rain
  
Assemble observations<br>
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Surface concentrations
(Visibility, IDDI, MISR, MODIS, MODIS Deepblue, Deposition, Aeronet,
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Aeroce, Asian network
Aeroce, Calipso, Asian dust observations, Ca concentrations in rain)<br>
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Retrieve from AeroCom database dust variables and wind speed fields<br>
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Eventually participate in dust conference in Italy <br>
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Refractive index and size in literature
  
===Data to look at===
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===Processes and possible Diagnostics===
  
The AeroCom database has unanalysed data on dust deposition
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Dust erosion - wind frequency and speed ; threshold velocities;
and wind speed statistics in some models.
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effective source fluxes; source size distribution
  
Aeronet dust dominated sites
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Dust settling - dry removal velocities per size bin;
  
Refractive index and size in literature
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Wet Dust removal - wet scavenging efficients; vertical distribution;
 +
wet deposition of Calcium, dust;
  
Dust, Fe and Ca concentrations in air and precipitation
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Scattering and absorption - refractive index; AOD; size; absorption
 
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Satellite AOD in dust dominated regions
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(MISR, MODIS, TOMS, DEEPBLUE-MODIS, CALIPSO)
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Fine mode AOD in dust regions?
 
  
 
[[Image:Sink DUST an2000 mALLYEAR WORLD Fraction.ps.png|Sink repartitioning among AeroCom models]]
 
[[Image:Sink DUST an2000 mALLYEAR WORLD Fraction.ps.png|Sink repartitioning among AeroCom models]]
 
Figure taken from [http://www.copernicus.org/EGU/acp/acp/6/1777/acp-6-1777.pdf Textor et al., ACP 2006]
 
Figure taken from [http://www.copernicus.org/EGU/acp/acp/6/1777/acp-6-1777.pdf Textor et al., ACP 2006]

Latest revision as of 06:35, 12 August 2012

Go back to AeroCom wiki discussion entry / AeroCom/Working group structure

Enter the Discussion on dust or click on the flag 'discussion' above.


AeroCom working group DUST

Contents

[edit] Participants

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

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

[edit] Goals

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

[edit] 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
- establish an observational database beyond Cakmur et al and AeroCom
- revisit HTAP dust experiment design (see MS email to AeroCom in Dec)
- eventually come together at AGU Acapulco conference in May 2007
- suggest input for C. Zender for Perrugia conference

[edit] List of Observational data to be included in analysis

Al in ocean water

Visibility

IDDI index

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

Coarse mode satellite derived AOD in dust regions?

Deposition DIRTMAP, Fe, Ca in rain

Surface concentrations Aeroce, Asian network

Refractive index and size in literature

[edit] 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


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

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