table : global-mean-rf-erf-values-2011-industrial-era

Global mean RF and ERF values in 2011 for the industrial era

table 2.1


This table appears in chapter 2 of the Climate Science Special Report: The Fourth National Climate Assessment: Volume I report.

The IPCC best-estimate values of present day RFs and ERFs from principal anthropogenic and natural climate drivers. RF is a good estimate of ERF for most forcing agents except black carbon on snow and ice and aerosol–cloud interactions.

This table is composed of this array :
0151f32a (13x3)
Radiative Forcing Term Radiative forcing (W/m2) Effective radiative forcing (W/m2)
Well-mixed greenhouse gases (CO2, CH4, N2O, and halocarbons) +2.83 (2.54 to 3.12) +2.83 (2.26 to 3.40)
Tropospheric ozone +0.40 (0.20 to 0.60)
Stratospheric ozone -0.05 (-0.15 to +0.05)
Stratospheric water vapor from CH4 +0.07 (+0.02 to +0.12)
Aerosol-radiation interactions -0.35 (-0.85 to +0.15) -0.45 (-0.95 to +0.05)
Aerosol-cloud interactions Not quantified -0.45 (-1.2 to 0.0)
Surface albedo (land use) -0.15 (-0.25 to -0.05)
Surface albedo (black carbon aerosol on snow and ice) +0.04 (+0.02 to +0.09)
Contrails +0.01 (+0.005 to +0.03)
Combined contrails and contrail-induced cirrus Not quantified +0.05 (0.02 to 0.15)
Total anthropogenic Not quantified +2.3 (1.1 to 3.3)
Solar irradiance +0.05 (0.0 to +0.10)
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