TABLE 1.

Radiative transfer inputs used in CERES-PRP. Note that the spectral surface emissivity is also inputted into the radiative transfer model but is omitted from this table since it remains fixed over time and is therefore not perturbable.

Variables	Dimensions	Sources
Temperature, water vapor, ozone	Pressure level, hour, latitude, longitude	GEOS or AIRS
Skin temperature, surface pressure	Hour, latitude, longitude	GEOS or AIRS
Carbon dioxide, methane	Latitude, longitude	AIRS/NOAA ESRL
Nitrous oxide, CFC-11, CFC-12, HCFC-22	Global means	NOAA-ESRL
Cloud fraction	Cloud condition, hour, latitude, longitude	SYN or C3M or SSF or SSFC3M
Cloud base pressure, top pressure, phase, optical depth (log mean), optical depth (linear mean), ice generalized effective diameter, liquid	Cloud layer, cloud condition, hour, latitude, longitude effective radius	SYN or C3M or SSF or SSFC3M
Surface albedo	SW band, cloudy or clear, zenith angle, latitude, longitude	CERES-SAH
Aerosol optical depth	Aerosol type, latitude, longitude	MATCH
Aerosol vertical distribution	Aerosol type, pressure layer, latitude, longitude	MATCH
TOA solar irradiance	Global mean	SORCE TSI