There are many attribution approaches, and several methods are detailed below. In physical and biological systems, attribution often builds on the understanding of the mechanisms behind the observed changes and numerical models are used, while in human systems other methods of evidence-building are employed. Confidence in the attribution can be increased if more than one approach is used and the model is evaluated as fit for purpose . Finally, appropriate communication of the attribution assessment and the accompanying confidence in the result is needed .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report