Dear Netsanet
Basically the optical properties have to be calculated off line
using a Mie code.
You need to calculate optical properties knowing the effective
radius of your bin ( or an explicitly a sub-bin distribution) and
for for every spectral band of the model ( checkout
mod_rad_radiation ( wavmin, wavmax) . Given the non linearity of
Mie calculation, you might want to consider integrating and
averaging the optical properties over the spectral bands (
actually you also integaret over the sub-bin size if you know a
sub-bin distribution ) . Then you need basically to add this
information to the table in mod_rad_aerosol which gives the values
of kext,ssa,g . However I am surprised that your code did not
crash , because excceeding array range in mod_rad_aer... do not
forget to enable the debug option : ./configure --enable debug
when you are developping new pieces of code to track such
potential bugs..
I hope it helps !
Fabien
On 03/06/2014 02:51 AM, Mirkana Degenie wrote:
Dear all
I have recently modified RegCM dust module to run for five
bins. I have added a fifth bin(20-60um). But I haven't made
change for the optical properties(ssa and extinction). I got
emission in the fifth bin. I am not sure if it is doing right
because data for optical properties is given four 4 dust bins,
so why the model runs when I add a fifth bin(but no ssa and
extinction values for this bin).
And also can you please suggest me how I can
get(calculate) ssa and extinction for dust.
best regards,
Netsanet
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