Difference between revisions of "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]]'''  
 
 
Go back to '''[[AeroCom/Working group structure]]'''
 
 
 
See also summary of '''[[AeroCom/Recommendations]]'''  
 
  
 
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.
 
  
 
----
 
----
 
  
 
'''AeroCom working group DUST'''  
 
'''AeroCom working group DUST'''  
 
   
 
   
 
+
===Participants===
===Participants for analysis===
 
 
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:
+
NEXT Telephone conference: probably march 07, organised from NCAR
10th of January 17 UTC (= 18 Paris time, 12 ET, 10 Boulder Time?)<br>
 
telephone number available from Michael Schulz<br>
 
Participants having responded yes: Miller, Mahowald, Ginouw, Balkanski
 
 
 
Zender has prior commitments on Jan 10 from 1700-2100 UTC.
 
I will continue to monitor developments on the Wiki, and I
 
reaffirm my support and commitment for an extensible C&M tool--Charlie
 
  
 
===Goals===
 
===Goals===
  
Investigate the possible impact of anthropogenic dust sources<br>
+
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===
+
===Short term actions===
  
Dust erosion - wind frequency and speed ; threshold velocities;
+
- Provide specifications for a land use related dust source
effective source fluxes; source size distribution
+
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<br>
 +
- establish an observational database beyond Cakmur et al and AeroCom<br>
 +
- revisit HTAP dust experiment design (see MS email to AeroCom in Dec)<br>
 +
- eventually come together at AGU Acapulco conference in May 2007<br>
 +
- suggest input for C. Zender for Perrugia conference
 +
===List of Observational data to be included in analysis===
  
Dust settling - dry removal velocities per size bin;
+
Al in ocean water
  
Wet Dust removal - wet scavenging efficients; vertical distribution;
+
Visibility
wet deposition of Calcium, dust;
 
  
Scattering and absorption - refractive index; AOD; size; absorption
+
IDDI index
  
===Short-term actions/experiments===
+
Satellite AOD in dust dominated regions
 +
(MISR, MODIS, TOMS, DEEPBLUE-MODIS, CALIPSO, Aeronet, Calipso)
  
Organise regular teleconferences<br>
+
Coarse mode satellite derived AOD in dust regions?
  
Prepare a natural and an anthropogenic dust source for a joint
+
Deposition
experiment<br>Follow up on ideas from earlier Mahowald publications.
+
DIRTMAP, Fe, Ca in rain
  
Assemble observations<br>
+
Surface concentrations
(Visibility, IDDI, MISR, MODIS, MODIS Deepblue, Deposition, Aeronet,
+
Aeroce, Asian network
Aeroce, Calipso, Asian dust observations, Ca concentrations in rain)<br>
 
Retrieve from AeroCom database dust variables and wind speed fields<br>
 
  
Eventually participate in dust conference in Italy <br>
+
Refractive index and size in literature
  
===Data to look at===
+
===Processes and possible Diagnostics===
  
The AeroCom database has unanalysed data on dust deposition
+
Dust erosion - wind frequency and speed ; threshold velocities;
and wind speed statistics in some models.
+
effective source fluxes; source size distribution
  
Aeronet dust dominated sites
+
Dust settling - dry removal velocities per size bin;
  
Refractive index and size in literature
+
Wet Dust removal - wet scavenging efficients; vertical distribution;
 +
wet deposition of Calcium, dust;
  
Dust, Fe and Ca concentrations in air and precipitation
+
Scattering and absorption - refractive index; AOD; size; absorption
 
 
Satellite AOD in dust dominated regions
 
(MISR, MODIS, TOMS, DEEPBLUE-MODIS, CALIPSO)
 
  
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, August 12, 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

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 climate 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
- 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

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

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