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Earth and Space Sciences · 术语表

什么是 Effective radiative forcing?

Definition 27.1 University Earth and Space Sciences — Year 2 · 第 27 章 — Anthropogenic Climate Change

The effective radiative forcing (ERF) of a perturbation — a change in a greenhouse gas, in aerosols, in the Sun — is the change it causes in the net downward flux of radiation at the top of the atmosphere, in W m−2\mathrm{W}\,\mathrm{m}^{-2}, once the atmosphere, the clouds and the land surface have adjusted to it, but before the global surface temperature has responded. The adjustments counted are those caused by the agent itself, independently of the surface temperature.

Effective radiative forcing from 1750 to 2019, relative to 1750, by driver. The total human forcing reaches 2.72\, W\, m-2 in 2019, with the very likely range shaded. Data: IPCC Sixth Assessment Report, Working Group I, Annex III extended data (CC BY 4.0).
Effective radiative forcing from 1750 to 2019, relative to 1750, by driver. The total human forcing reaches 2.72 W m−22.72\,\mathrm{W}\,\mathrm{m}^{-2} in 2019, with the very likely range shaded. Data: IPCC Sixth Assessment Report, Working Group I, Annex III extended data (CC BY 4.0).
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