Difference between revisions of "Dust"

Latest revision as of 05:35, August 12, 2012

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AeroCom working group DUST

Participants[edit | edit source]

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

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

Goals[edit | edit source]

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[edit | edit source]

- 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[edit | edit source]

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[edit | edit source]

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

Figure taken from Textor et al., ACP 2006

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-Go back to '''[[AeroCom]]''' wiki discussion  entry
+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.
 ----
 '''AeroCom working group DUST'''
+===Participants===
-===Participants for analysis===
+Ginoux,	Balkanski, Mahowald, Schulz, Miller, Tegen, Zender,
-Ginoux,	Balkanski, Mahowald, Schulz,
+Winker, Mann, Takemura, (Textor)
-Winker, Mann, Takemura, Miller?, Tegen?, Zender?,
 -
-NEXT Telephone conference:
+NEXT Telephone conference: probably march 07, organised from NCAR
-th of January 17 UTC (= 18 Paris time, 12 ET, 10 Boulder Time?)<br>
-telephone number available from Michael Schulz<br>
-Participants foreseen:
 ===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>
 Recommend properties for dust size and refractive index<br>
-===Processes and possible Diagnostics===
+===Short term actions===
-Dust erosion - wind frequency and speed ; threshold velocities;
-effective source fluxes; source size distribution
-Dust settling - dry removal velocities per size bin;
+- 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<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===
-Wet Dust removal - wet scavenging efficients; vertical distribution;
+Al in ocean water
-wet deposition of Calcium, dust;
-Scattering and absorption - refractive index; AOD; size; absorption
+Visibility
-===Short-term actions/experiments===
+IDDI index
-Organise regular teleconferences<br>
+Satellite AOD in dust dominated regions
+(MISR, MODIS, TOMS, DEEPBLUE-MODIS, CALIPSO, Aeronet, Calipso)
-Prepare a natural and an anthropogenic dust source for a joint
+Coarse mode satellite derived AOD in dust regions?
-experiment<br>Follow up on ideas from earlier Mahowald publications.
-Assemble observations<br>
+Deposition
-(Visibility, IDDI, MISR, MODIS, MODIS Deepblue, Deposition, Aeronet,
+DIRTMAP, Fe, Ca in rain
-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>
+Surface concentrations
+Aeroce, Asian network
-===Data to look at===
+Refractive index and size in literature
-The AeroCom database has unanalysed data on dust deposition
+===Processes and possible Diagnostics===
-and wind speed statistics in some models.
-Aeronet dust dominated sites
+Dust erosion - wind frequency and speed ; threshold velocities;
+effective source fluxes; source size distribution
-Refractive index and size in literature
+Dust settling - dry removal velocities per size bin;
-Dust, Fe and Ca concentrations in air and precipitation
+Wet Dust removal - wet scavenging efficients; vertical distribution;
+wet deposition of Calcium, dust;
-Satellite AOD in dust dominated regions
+Scattering and absorption - refractive index; AOD; size; absorption
-(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]]
+Figure taken from [http://www.copernicus.org/EGU/acp/acp/6/1777/acp-6-1777.pdf Textor et al., ACP 2006]