Editing IPCC:AR6/SRCCL/Chapter-2 (section)

==== Land use change altered albedo ====

AR5 stated with ''high confidence'' that anthropogenic land use change has increased the land surface albedo, which has led to a RF of –0.15 ± 0.10 W m <sup>–2</sup> . However, it also underlined that the sources of the large spread across independent estimates were caused by differences in assumptions for the albedo of natural and managed surfaces and for the fraction of land use change before 1750. Generally, our understanding of albedo changes from land use change has been enhanced from AR4 to AR5, with a narrower range of estimates and a higher confidence level. The radiative forcing from changes in albedo induced by land use changes was estimated in AR5 at–0.15 W m <sup>–2</sup> (–0.25 to about –0.05), with medium confidence in AR5 (Myhre et al. 2013 <sup>[[#fn:r13|13]]</sup> ). This was an improvement over AR4 in which it was estimated at –0.2 W m <sup>–2</sup> (–0.4 to about 0), with ''low to medium confidence'' (Forster et al. 2007 <sup>[[#fn:r14|14]]</sup> ). Section 2.5 shows that albedo is not the only source of biophysical land-based climate forcing to be considered.

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