==========================================================   READ ME File ====================================================================================================================

The uploaded MATLAB files make up the modified version of the Maetzler's code for Mie theory calculations used in this work. 

The code provides the mass absorption cross-section (MAC), mass scattering cross-section (MSC), asymmetry factor (gsca) and single scattering albedo (SSA) of carbonaceous particles
containing elemental and organic carbon. The refractive index and bulk density of the particles are estimated using the input organic to total carbon (OC/TC) mass ratio and the 
relations derived by Kelesidis et al. (Carbon, 2021; doi.org/10.1016/j.carbon.2020.10.032). The refractive index obtained this way using the measured OC/TC = 95.8 is given in the txt 
file entitled "CB_OCTC_958c.txt" that is also uploaded in this repository. The first column of that file provides the wavelength (units: μm), the second column the real refractive 
index part and the third column the imaginary refractive index part.

The user needs to define the following input information before running the MATLAB file "Mie_Theory_Code.m":

- OC/TC value in line 4.
- Particle radius (units: nm) in line 9.

The MATLAB file "mie.m" and the txt file "CB_OCTC_958c.txt" should be placed in the same directory with the MATLAB file "Mie_Theory_Code.m". When running the latter file, an Excel file
is generated. The user can change the name of that file in line 103. The first column of that file provides the wavelength (units: nm), the second column the MAC (m^2/g), the third column 
the MSC (m^2/g), the fourth the gsca and the fifth the SSA.  
