README for Horowitz et al. GRL : ‘Effects of sea salt aerosol emissions for Marine Cloud Brightening on atmospheric chemistry: Implications for radiative forcing’

This repository includes GEOS-Chem model output used in generating the figures in this paper and used in radiative forcing calculations.

All files are in the bpch format. Open source tools are available for reading this file format in IDL (http://acmg.seas.harvard.edu/gamap/doc/index.html), MATLAB (http://wiki.seas.harvard.edu/geos-chem/index.php/Matlab_software_tools_for_use_with_GEOS-Chem), and Python (https://github.com/darothen/xbpch).

Naming convention: ‘standard’ refers to the Standard simulation, ‘geoeng.max’ refers to MCB_high, and ‘geoeng.min’ refers to MCB_low as defined in the paper. 

The file radiative_forcing_relevant_fields.zip contains:
- tracerinfo.dat and diaginfo.dat files required for reading all of the model output files in the repository (used in IDL, MATLAB, and Python tools above)
- concentrations of ozone (O3), OH and HO2 (HOx), and chlorine atom (Cl)
- air mass (AirMass), temperature (T), and tropopause height (TPheight)
- fields from the online radiative transfer model within GEOS-Chem used in the paper for direct RF of sea salt aerosols and sulfate-nitrate-ammonium aerosols (RRTMG)

The following files contain concentrations of all species in the Iy, Bry, and Cly families as defined in the paper for each simulation:
- standard_tracers.bpch
- geoeng.min_tracers.bpch
- geoeng.max_tracers.bpch