model.ch4calcs

Computes reductions in CH4 emission over time. Converts between tons CH4 and CO2e.

class CH4Calcs(model.data_handler.DataHandler):
CH4Calcs( ac, soln_net_annual_funits_adopted, soln_pds_direct_ch4_co2_emissions_saved=None)
Args
  • ac: an advanced_controls object
  • soln_net_annual_funits_adopted (series): functional units adopted each year
  • soln_pds_direct_ch4_co2_emissions_saved (float): direct CH4 emissions avoided per land unit (used for Land models only).
def ch4_co2eq_tons_reduced(self):

CH4 reduced, in tons of CO2eq per year.

def ch4_tons_reduced(self):

CH4 reduced from the RRS model, in tons CH4 per year.

def avoided_direct_emissions_ch4_co2eq_land(self):

CH4 emissions avoided from the land model, in tons of CO2eq per year

def avoided_direct_emissions_ch4_land(self):

CH4 direct emissions avoided, in tons per year

def ch4_megatons_avoided_or_reduced(self):

CH4 emissions avoided or reduced, in megatons per year (units needed for the FaIR model).

def ch4_ppb_calculator(self):

Parts Per Billion reduction calculator for CH4.

Each yearly reduction in CH4 (in metric tons) is modeled as a discrete avoided pulse. A Simplified atmospheric lifetime function for CH4 is taken from Myhrvald and Caldeira (2012). Atmospheric tons of CH4 are converted to parts per billion CH4 based on the molar mass of CH4 and the moles of atmosphere.