Explanation

siem package helps you to create the emission files for WRF-Chem, and CMAQ air quality models. The strategy is to reproduces the model's netCDF emission files (same coordinates, dimensions, units, and attributes). As sometimes the original emission pre-processors requires very detailed information, siem allows the user to create the emissions with limited information, and hence the simplified in the name. Because of that, siem could be used in different cities to run air quality models, and, therefore, to improve air quality management.

siem is strongly based on the methodology of Andrade et al. (2015), previously used in many air quality simulation over the Metropolitan Area of São Paulo. But, siem offers other features:

• Adding different number of emission sources.
• Point sources can be spatially and temporal distributed.
• It is chemical mechanism agnostic. The chemical mechanism are not hard-coded.
• Emission sources can vary by day of the week.
• Each emission sources can have different spatial distribution.
• Early created for WRF-Chem, but now compatible with CMAQ.
• As it is built in Python, subproducts can be easily modified (i.e. calculate total emissions, plot pollutant emissions, apply correction factors, etc).