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--- aerocom:optical_properties [2012-06-22 12:16:27]
michaels
+++ aerocom:optical_properties [2022-05-31 09:29:31] (current)
@@ Line 1: / Line 1: @@
-===== Questionary on Optical properties =====
+ATTENTION - THIS WIKI PAGE IS NO LONGER UPDATED - PLEASE GO TO [[http://aerocom.met.no/|aerocom.met.no]]FOR LATEST INFO
+===== Questionary on Optical properties (AeroCom Phase III models)=====
+The Phase III questionnaire is available in the following Google spreadsheet:
+https://docs.google.com/spreadsheets/d/1pFq6f7gP8nQLz6IYLqMtCPQN4t0eVe2Xd3R3_ra4pg4/
+If you have problems accessing this spreadsheet, please contact jonasg@met.no or michaels@met.no. The spreadsheet is also available as .ods file in the supplementary material of Gliß et al, 2020 (https://www.atmos-chem-phys-discuss.net/acp-2019-1214/).
+===== 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:
@@ Line 840: / Line 850: @@
 tabulated growth factors between 0 and 90% RH and one at 95% RH.
 No inclusion of sub-grid variability.
 ) Do you diagnose the aerosol water mass or aerosol water AOD? How?
+Yes, but it does not correspond strictly to the growth factors used for AOD computation.
 ) 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.
 ) Do you average nighttime and daytime values of AOD into daily averages?
+daily averages
 ) What is the single-scattering albedo of your BC, POM, DUST? Does it vary as a function of size, RH? How roughly? Which range?
+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
 ) What is the absorption coefficient of BC? How is it calculated?
+from SSA
 ) Please provide the refractive index at 0.55 microns for each aerosol species? And eventually further information on the hygroscopicity for each species.