The Special Reports cover scientiﬁc literature 
accepted for publication respectively by 15 May 2018, 7 April 2019 and 15 May 2019.
60 
The Glossary (Annex I) includes deﬁnitions of these, and other terms and concepts used in this report drawn from the AR6 joint Working Group Glossary.
61 
Depending on the climate information context, geographical regions in AR6 may refer to larger areas, such as sub-continents and oceanic regions, or to typological regions, such 
as monsoon regions, coastlines, mountain ranges or cities. A new set of standard AR6 WGI reference land and ocean regions have been deﬁned. WGIII allocates countries to 
geographical regions, based on the UN Statistics Division Classiﬁcation {WGI 1.4.5, WGI 10.1, WGI 11.9, WGI 12.1–12.4, WGI Atlas.1.3.3–1.3.4}.
62 
Each ﬁnding is grounded in an evaluation of underlying evidence and agreement. A level of conﬁdence is expressed using ﬁve qualiﬁers: very low, low, medium, high and very 
high, and typeset in italics, for example, medium conﬁdence. The following terms have been used to indicate the assessed likelihood of an outcome or result: virtually certain 
99–100% probability; very likely 90–100%; likely 66–100%; more likely than not >50-100%; about as likely as not 33–66%; unlikely 0–33%; very unlikely 0–10%; and 
exceptionally unlikely 0–1%. Additional terms (extremely likely 95–100%  and extremely unlikely 0–5%) are also used when appropriate. Assessed likelihood also is typeset in 
italics: for example, very likely. This is consistent with AR5. In this Report, unless stated otherwise, square brackets [x to y] are used to provide the assessed very likely range, or 
90% interval.
futures.