openairclim.core.calc_co2

Calculates CO2 response.

openairclim.core.calc_co2.calc_co2_concentration(config: dict, emis_dict: dict) → dict

Calculates the CO2 concentration values in ppmv for emitted CO2 in Tg.

Gets the method from config and executes the corresponding subroutine.

Parameters:

• config (dict) – Configuration dictionary from config

• emis_dict (dict) – Dictionary with arrays of emissions for time range as defined in config, keys are species

Returns:

Dictionary with array of CO2 concentration in ppmv for time range as defined in config, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_drf_dconc(conc_dict: dict, config: dict) → dict

Calculates the derivative of CO2 radiative forcing w.r.t. concentration.

This is used for the differential and marginal RF attribution methods. The CO2 method is taken from the config file.

Parameters:

• conc_dict (dict) – Dictionary with array of concentrations between the starting and ending years, key is species

• config (dict) – Configuration dictionary from config

Raises:

ValueError – if CO2.rf.method not valid or the derivative undefined

Returns:

Dictionary with numpy.ndarray of CO2 radiative forcing derivative values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_drf_dconc_etminan_2016(conc_dict: dict, conc_n2o_bg_dict: dict) → dict

Calculates the derivative of CO2 radiative forcing w.r.t. concentration.

Reference: Etminan, M., Myhre, G., Highwood, E. J., & Shine, K. P. (2016). Radiative forcing of carbon dioxide, methane, and nitrous oxide: A significant revision of the methane radiative forcing. Geophysical Research Letters, 43(24), 12-614. https://doi.org/10.1002/2016GL071930.

Parameters:

• conc_dict (dict) – Dictionary with array of concentrations (not including background) between the starting and ending years, keys is species

• conc_n2o_bg_dict (dict) – Dictionary of numpy.ndarray of background N2O concentrations between the starting and ending years, key is species

Returns:

Dictionary with numpy.ndarray of dRF(CO2)/dconc values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_rf(conc_dict: dict, config: dict) → dict

Calculates the radiative forcing values for emitted CO2 concentrations.

The CO2 method is taken from the config file.

Parameters:

• conc_dict (dict) – Dictionary with array of concentrations (not including background) between the starting and ending years, keys is species

• config (dict) – Configuration dictionary from config

Raises:

ValueError – if CO2.rf.method not valid

Returns:

Dictionary with numpy.ndarray of CO2 radiative forcing values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_rf_etminan_2016(conc_dict: dict, conc_n2o_bg_dict: dict) → dict

Calculates the CO2 radiative forcing values for emitted concentrations.

Reference: Etminan, M., Myhre, G., Highwood, E. J., & Shine, K. P. (2016). Radiative forcing of carbon dioxide, methane, and nitrous oxide: A significant revision of the methane radiative forcing. Geophysical Research Letters, 43(24), 12-614. https://doi.org/10.1002/2016GL071930.

Parameters:

• conc_dict (dict) – Dictionary with array of concentrations (not including background) between the starting and ending years, keys is species

• conc_n2o_bg_dict (dict) – Dictionary of numpy.ndarray of background N2O concentrations between the starting and ending years, key is species

Returns:

Dictionary with numpy.ndarray of CO2 radiative forcing values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_rf_ipcc_2001_1(conc_dict: dict) → dict

Calculates the radiative forcing values for emitted CO2 concentrations.

After IPCC 2001, Table 6.2, first row.

Parameters:

conc_dict (dict) – Dictionary with array of concentrations (not including background) between the starting and ending years, keys is species

Returns:

Dictionary with array of CO2 radiative forcing values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_rf_ipcc_2001_2(conc_dict: dict) → dict

Calculates the radiative forcing values for emitted CO2 concentrations.

After IPCC 2001, Table 6.2, second row.

Parameters:

conc_dict (dict) – Dictionary with array of concentrations (not including background) between the starting and ending years, keys is species

Returns:

Dictionary with array of CO2 radiative forcing values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_rf_ipcc_2001_3(conc_dict: dict) → dict

Calculates the radiative forcing values for emitted CO2 concentrations.

After IPCC 2001, Table 6.2, third row.

Parameters:

conc_dict (dict) – Dictionary with array of concentrations (not including background) between the starting and ending years, keys is species

Returns:

Dictionary with array of CO2 radiative forcing values between the starting and ending years, key is species CO2

Return type:

dict

openairclim.core.calc_co2.calc_co2_ss(config: dict, emis_dict: dict) → dict

Calculates the CO2 concentration values in ppmv for emitted CO2 in Tg.

After Sausen & Schumann (2000), formulas (4) and (5).

Parameters:

• config (dict) – Configuration dictionary from config

• emis_dict (dict) – Dictionary with arrays of emissions for time range as defined in config, keys are species

Returns:

Dictionary with array of CO2 concentration in ppmv for time range as defined in config, key is species CO2

Return type:

dict

openairclim.core.calc_co2.get_co2_emissions(inv_dict: dict) → dict

Get total CO2 emissions in Tg for each inventory.

Parameters:

inv_dict (dict) – Dictionary of emission inventory xarrays, keys are inventory years

Returns:

Dictionary with array of CO2 emissions in Tg

Return type:

dict

openairclim.core.calc_co2.greens_c(time: float) → float

Green’s function / Impulse response for CO2 concentration.

After equation (5) in Sausen & Schumann (2000).

Parameters:

time (float) – Time

Returns:

Impulse response for a certain point in time

Return type:

float