Difference between revisions of "Dust"
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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> | ||
Line 22: | Line 22: | ||
===Short term actions=== | ===Short term actions=== | ||
− | Provide specifications for a land use related dust source | + | - Provide specifications for a land use related dust source |
to be implemented by participating modellers (Mahowald)<br> | to be implemented by participating modellers (Mahowald)<br> | ||
− | Pull out of dust variables for one AeroCom model (Schulz)<br> | + | - Pull out of dust variables for one AeroCom model (Schulz)<br> |
− | passed on to R. Miller for initial testing of Cakmur analysis | + | - passed on to R. Miller for initial testing of Cakmur analysis |
+ | - establish an observational database beyond Cakmur et al and AeroCom | ||
+ | - eventually come together at AGU Acapulco conference in May 2007 | ||
− | |||
− | + | ===Observational data list=== | |
− | |||
− | + | 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 | |
− | Aeroce | ||
− | |||
− | + | Refractive index and size in literature | |
− | |||
− | + | ===Processes and possible Diagnostics=== | |
− | and | ||
− | + | Dust erosion - wind frequency and speed ; threshold velocities; | |
+ | effective source fluxes; source size distribution | ||
− | + | Dust settling - dry removal velocities per size bin; | |
− | Dust, | + | Wet Dust removal - wet scavenging efficients; vertical distribution; |
+ | wet deposition of Calcium, dust; | ||
− | + | Scattering and absorption - refractive index; AOD; size; absorption | |
− | |||
− | |||
[[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] |
Revision as of 08:38, January 17, 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 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
- eventually come together at AGU Acapulco conference in May 2007
Observational data list
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
Figure taken from Textor et al., ACP 2006