AODEM - Aerosol Optcal DEpth Module: an aerosol optical scheme for chemical-transport models Tony Christian LANDI Participants G. Curci, F. Angelini, G. P. Gobbi, L. Caporaso, W. Di Nicolantonio, A. Cacciari, E. Bolzacchini and A. Riccio
Outline Motivations and goals Motivations Goals AODEM : software description and results Description Results - Model assessment Summary
Motivations Exploiting the observations of AOP for CTM assessment
Motivations Exploiting the observations of AOP for CTM assessment
Motivations How to distribute the AOD along a vertical profile?
Motivations Exploiting the observations of AOP for CTM assessment
Goals AODEM has been developed!
Description What is AODEM?
Description How does it work?
Description Which format does it create?
Description How does it work?
Results - Model assessment Chimere and AODEM products Parameter Model 1. mass concentration [µg/m 3 ] Chimere2008c 2. particles number [#/m 3 ] AODEMv1.0 3. Mie calculation Bohren and Huffman (1983) AODEMv1.0 4. signa ext [km 1 ] layer by layer AODEMv1.0 5. Aerosol Optical Depth AODEMv1.0
Motivations and goals AODEM : software description and results Summary Results - Model assessment 1/5 CHIMERE domains
Results - Model assessment 1/5 CHIMERE performances : coarse domain (50x50km 2 ) Underestimation of about 40%, both in winter and summer and both PM10 and PM2.5 fractions. Extreme values are not captured by the model (Stern et al., 2008).
Results - Model assessment 1/5 CHIMERE performances : nested domain (10x10km 2 )
Results - Model assessment 2/5 Obs from tethered balloon vs predictions [#/m 3 ]
Results - Model assessment 2/5 Obs from tethered balloon vs predictions [#/m 3 ]
Results - Model assessment 3/5 Mie calculation : BHmie vs BHmie
Results - Model assessment 3/5 Mie calculation : BHmie vs Mishchenko
Results - Model assessment 4/5 AODEM/Sigma ext. : qualitative comparison vs Lidar (RCS)
Results - Model assessment 4/5 AODEM/Sigma ext. : qualitative comparison vs Lidar (RCS)
Results - Model assessment 5/5 AODEM/AOD : quantitative comparison vs AERONET data
Results - Model assessment 5/5 AODEM/AOD : quantitative comparison vs AERONET data
Results - Model assessment 5/5 AODEM/AOD : quantitative comparison vs AERONET data
Results - Model assessment 5/5 AODEM/AOD : quantitative comparison vs MODIS data
Results - Model assessment 5/5 AODEM/AOD : quantitative comparison vs AERONET & MODIS data
Start-up:
Yet another never-ending story!?
Outlook : 1/3 optical properties calculation for non-spherical particles
Outlook : 2/3 WRF/Chimere instead of MM5/Chimere winter (DJF) summer (JJA)
Outlook : 2/3 WRF/Chimere instead of MM5/Chimere winter (DJF) summer (JJA)
Outlook : 2/3 WRF/Chimere/AODEM instead of MM5/Chimere/AODEM winter (DJF) summer (JJA)
Outlook : 3/3 Developing a parellal code for AODEM Establishing a collaboration with a student in computer science? Interest in further details about AODEMv1.0? Free download of the source code is available! http://people.isac.cnr.it/-tilde-landi/