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aerocom:optical_properties [2012-06-22 12:16:27] michaels |
aerocom:optical_properties [2022-05-31 09:29:31] (current) |
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- | ===== Questionary on Optical properties ===== | + | ATTENTION - THIS WIKI PAGE IS NO LONGER UPDATED - PLEASE GO TO [[http:// |
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+ | ===== Questionary on Optical properties | ||
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+ | The Phase III questionnaire is available in the following Google spreadsheet: | ||
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+ | https:// | ||
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+ | If you have problems accessing this spreadsheet, | ||
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+ | ===== Questionary on Optical properties (AeroCom Phase II models)===== | ||
Questions on optical property calculations in AeroCom phase II models with the purpose of a correct interpretation of diagnosed AOD properties in the AeroCom database: | Questions on optical property calculations in AeroCom phase II models with the purpose of a correct interpretation of diagnosed AOD properties in the AeroCom database: | ||
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11 tabulated growth factors between 0 and 90% RH and one at 95% RH. | 11 tabulated growth factors between 0 and 90% RH and one at 95% RH. | ||
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No inclusion of sub-grid variability. | No inclusion of sub-grid variability. | ||
7) Do you diagnose the aerosol water mass or aerosol water AOD? How? | 7) Do you diagnose the aerosol water mass or aerosol water AOD? How? | ||
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+ | Yes, but it does not correspond strictly to the growth factors used for AOD computation. | ||
8) Is the diagnosed sea salt and sulfate AOD computed at ambient RH? And eventually is that using clear-sky or all-sky RH? | 8) Is the diagnosed sea salt and sulfate AOD computed at ambient RH? And eventually is that using clear-sky or all-sky RH? | ||
+ | Yes, clear-sky RH. | ||
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9) Do you average nighttime and daytime values of AOD into daily averages? | 9) Do you average nighttime and daytime values of AOD into daily averages? | ||
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+ | daily averages | ||
10) What is the single-scattering albedo of your BC, POM, DUST? Does it vary as a function of size, RH? How roughly? Which range? | 10) What is the single-scattering albedo of your BC, POM, DUST? Does it vary as a function of size, RH? How roughly? Which range? | ||
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+ | Depending on wavelength and RH | ||
+ | BC soluble SSA varies between 0.41 and 0.53 | ||
+ | BC insoluble SSA varies between 0.30 and 0.42 | ||
+ | OA SSA varies between 0.94 and 0.99 | ||
+ | DUST SSA varies between 0.944 and 0.987 | ||
11) What is the absorption coefficient of BC? How is it calculated? | 11) What is the absorption coefficient of BC? How is it calculated? | ||
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+ | from SSA | ||
12) Please provide the refractive index at 0.55 microns for each aerosol species? And eventually further information on the hygroscopicity for each species. | 12) Please provide the refractive index at 0.55 microns for each aerosol species? And eventually further information on the hygroscopicity for each species. |