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Emissions Input Data
No full textThis directory contains emissions input fields used to drive simulations utilized in Persad, G. The Dependence of Aerosols’ Global and Local Precipitation Impacts on Emitting Region (submitted, Atmospheric Chemistry and Physics) and published in Persad, G. G. & Caldeira, K. Divergent global-scale temperature effects from identical aerosols emitted in different regions. Nature Communications 9, 3289 (2018). Full details on simulation set-up may be found in Persad and Caldeira (2018) and Persad (submitted, Atmospheric Chemistry and Physics)
From the Persad and Caldeira (2018) Simulation and Analysis section:
"Nine 100-year, repeating annual cycle simulations were conducted in CAM5 coupled to the mixed-layer ocean: one control simulation, and eight regionally perturbed simulations. The control simulation is a year 2000 cli- mate with non-biomass burning anthropogenic black carbon, organic carbon, sulfur dioxide (SO2), and sulfate (SO4) emissions fields set to 1850 values. In each of the eight regionally perturbed simulations, the relevant region is populated with that region’s year 2000 values, scaled at every regional grid point and time step to achieve additional total annual emissions equivalent to China’s total year 2000 values: 22.4 Tg sulfate precursor, 1.61 Tg of black carbon emissions, and 4.03 Tg of organic carbon emissions. The 1850 and 2000 baseline emissions fields on which these are based are CAM5’s standard historical emissions fields1, and the resulting emissions fields used to drive simulations are publicly accessible to allow for replication in other model suites (see Data availability). "
See Persad and Caldeira (2018) Figure 1 and Methods for region definitions.
Questions can be directed to the corresponding author at [email protected]
Emissions input fields:
Control Simulation
/Control
-Control_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the control simulation. All input files listed are default available through NCAR CESM installations and the NCAR CESM server (https://svn-ccsm-inputdata.cgd.ucar.edu/trunk/inputdata/atm/cam/chem/trop_mozart_aero/emis/) and are not included here.
Eight Regional Perturbation Simulations
/Brazil
-Brazil_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in Brazil. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
-
/China
-China_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in China. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
/East_Africa
-East_Africa_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in East Africa. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
/Western_Europe
-Western_Europe_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in Western Europe. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
/India
-India_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in India. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
/Indonesia
-Indonesia_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in Indonesia. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
/South_Africa
-South_Africa_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in South Africa. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above).
/United_States
-United_States_User_Namelist: Contains NCAR CESM user namelist specification with listing of all emissions input files for the regional perturbation simulation with scaled emissions located in the United States. All referenced files not listed in this directory are default available through the NCAR CESM server (see Control Simulation above)
Simulation Output Data
No full textOutput analyzed as part of Persad, G. The Dependence of Aerosols’ Global and Local Precipitation Impacts on Emitting Region.
SLAB OCEAN SIMULATIONS
Structure of filenames:
[Variable].[Simulation_Name].ts.001-100.ANN.nc
All files contain the annual, 100-year timeseries for a single variable. For analysis, the first 40 years are considered to be the model equilibration period. Years 40-100 are used as the equilibrated signal.
Variables:
TREFHT = 2D Surface Air Temperature
PREC = 2D Convective and Largescale Precipitation Rates
E_2000_CAM5_1850aero = Control simulation, year 2000 conditions in all but anthropogenic aerosols, anthropogenic aerosols at year 1850 values.
E_2000_CAM5_1850aero_BRonly_Jan18 = Brazil-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of Brazil
E_2000_CAM5_1850aero_CHonly_Jan18 = China-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of China
E_2000_CAM5_1850aero_EAonly_Jan18 = East Africa-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of East Africa
E_2000_CAM5_1850aero_EUonly_Jan18 = Europe-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of Western Europe
E_2000_CAM5_1850aero_INonly_Jan18 = India-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of India
E_2000_CAM5_1850aero_NESonly_Jan18 = Indonesia-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of Indonesia
E_2000_CAM5_1850aero_USonly_Jan18 = US-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of the United States
E_2000_CAM5_1850aero_SAonly_Jan18 = South Africa-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of South Africa
ATMOSPHERE-ONLY SIMULATIONS
Structure of filenames:
[Variable].[Simulation_Name].ts.001-60.ANN.nc OR
[Variable].[Simulation_Name].mon.001-60.nc
Files contain either the annual, 60-year timeseries ('...ANN.nc') or the monthly, 60-year timeseries ('...mon....nc') for a single variable. For analysis, the first 20 years are considered to be the model equilibration period. Years 20-60 are used as the equilibrated signal.
Variables:
PREC = 2D Convective and Large-scale Precipitation Rates
PRECL = 2D Large-scale Precipitation Rates
PRECC = 2D Convective Precipitation Rates
FLNT = 2D Net longwave flux at top of model
FLNS = 2D Net longwave flux at the surface
FSNT = 2D Net shortwave flux at top of model
FSNS = 2D Net shortwave flux at the surface
F_2000_CAM5_1850aero = Control simulation, year 2000 conditions in all but anthropogenic aerosols, anthropogenic aerosols at year 1850 values.
F_2000_CAM5_1850aero_BRonly_Jan18 = Brazil-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of Brazil
F_2000_CAM5_1850aero_CHonly_Jan18 = China-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of China
F_2000_CAM5_1850aero_EAonly_Jan18 = East Africa-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of East Africa
F_2000_CAM5_1850aero_EUonly_Jan18 = Europe-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of Western Europe
F_2000_CAM5_1850aero_INonly_Jan18 = India-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of India
F_2000_CAM5_1850aero_NESonly_Jan18 = Indonesia-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of Indonesia
F_2000_CAM5_1850aero_USonly_Jan18 = US-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of the United States
F_2000_CAM5_1850aero_SAonly_Jan18 = South Africa-only perturbation simulation, control simulation conditions, but with fixed aerosol perturbation added within geographic boundaries of South Africa
For full region definitions and specification of the fixed aerosol perturbation, please refer to Persad, G. G., & Caldeira, K. (2018). Divergent global-scale temperature effects from identical aerosols emitted in different regions. Nature Communications, 9(1), 3289. https://doi.org/10.1038/s41467-018-05838-
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