IPCC Qualifier
very low confidence
Each finding is grounded in an evaluation of underlying evidence and agreement. The IPCC calibrated language uses five qualifiers to express a level of confidence (very low, low, medium, high and very high )
low confidence
Each finding is grounded in an evaluation of underlying evidence and agreement. The IPCC calibrated language uses five qualifiers to express a level of confidence (very low, low, medium, high and very high )
very high confidence
Each finding is grounded in an evaluation of underlying evidence and agreement. The IPCC calibrated language uses five qualifiers to express a level of confidence (very low, low, medium, high and very high )
virtually certain
99–100% probability (Indicates the assessed likelihood of an outcome or a result)
very likely
90–100% probability (Indicates the assessed likelihood of an outcome or a result)
likely
66–100% probability (Indicates the assessed likelihood of an outcome or a result)
more likely than not
>50–100% probability (Indicates the assessed likelihood of an outcome or a result)
about as likely as not
33–66% probability (Indicates the assessed likelihood of an outcome or a result)
unlikely
0–33% probability (Indicates the assessed likelihood of an outcome or a result)
very unlikely
0–10% probability (Indicates the assessed likelihood of an outcome or a result)
exceptionally unlikely
0–1% probability (Indicates the assessed likelihood of an outcome or a result)
extremely likely
95–100% probability (Indicates the assessed likelihood of an outcome or a result)
extremely unlikely
0–5% probability (Indicates the assessed likelihood of an outcome or a result)
medium confidence
Each finding is grounded in an evaluation of underlying evidence and agreement. The IPCC calibrated language uses five qualifiers to express a level of confidence (very low, low, medium, high and very high )
high confidence
Each finding is grounded in an evaluation of underlying evidence and agreement. The IPCC calibrated language uses five qualifiers to express a level of confidence (very low, low, medium, high and very high )