aerocom:optical_properties

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

aerocom:optical_properties [2011-09-28 12:53:23]
michaels 		aerocom:optical_properties [2022-05-31 09:29:31]
Line 1: Line 1:
-===== Questionary on Optical properties ===== 
- 
-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 ===== 
- 
- 
-1) Do you assume and how internal mixing when computing optical properties of total 
-aerosol? Is Size varying? Which mixing assumption?  
- 
-2) Do you differentiate between clear-sky and all-sky relative humidity and 
-which one do you use for the AOD calculation, reported to AeroCom? 
- 
-2b) If you differentiate, have you investigated the difference?  
- 
-3) Is the reported-to-AeroCom AOD as asked under 2) used directly for the RF calculations?  
- 
-4) Would you consider the diagnosed AOD provided to the Aerocom database as representative for clear-skies? Eg for comparison to Aeronet and satellite retrievals in clear skies? 
- 
-5) If you diagnose a clear-sky  AOD =>  How do you compute it? What are the assumptions on RH? Any threshold of RH you use? Cloud fraction weighting to derive a monthly average Clear-sky AOD? 
- 
-6) Which humidity growth factor and variation do you use ? How does it depend on RH? Do you include sub-grid variability in relative humidity? 
- 
-7) Do you diagnose the aerosol water mass or aerosol  water AOD? How? 
- 
-8) Is the diagnosed sea salt and sulfate AOD computed at ambient RH? And eventually is that using clear-sky or all-sky  RH? 
-  
-9) Do you average nighttime and daytime values of AOD into 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?  
- 
-11) What is the absorption coefficient of BC? How is it calculated? 
- 
-===== MODELS ===== 
- 
- 
-==== SPRINTARS-v384.A2.* ==== 
- 
-==== OsloCTM2.A2.* ==== 
-  
- 
-==== MPIHAM_V2_KZ.A2.* ==== 
-  
- 
-==== HadGEM2-ES.A2.* ==== 
-   
- 
-==== GMI.A2.* and GMI-MERRA.A2.* ==== 
- 
- 
-==== GISS-modelE.A2.* ==== 
-  
- 
-==== GISS-MATRIX.A2.* ==== 
-  
- 
-==== BCC_AGCM2.0.1_CAM.A2.* ==== 
-  
- 
-==== CAM4-Oslo-Vcmip5.A2.* ==== 
-  
- 
-==== CAM5-MAM3-PNNL.A2* ==== 
- 
-  
-==== GOCART-v4Ed.A2.* ==== 
-  
- 
-==== TM5-V3.A2.* ==== 
-  
- 
-==== GEOSCHEM-v822.A2. ==== 
- 
  
  • aerocom/optical_properties.txt
  • Last modified: 2022-05-31 09:29:31
  • (external edit)