Dust

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(Participants for analysis)
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===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, 12 August 2012

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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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