In line with the AR5 definition, 'changes in climate-related systems' here refer to any long-term trend, irrespective of the underlying causes; thus, an observed impact is not necessarily an observed impact of anthropogenic climate forcing. For example, in this section, sea level rise is defined as relative sea level rise measured against a land-based reference frame , meaning that it is driven not only by thermal expansion and loss of land ice influenced by anthropogenic climate forcing, but also by vertical land movements. As attribution of coastal damages to sea level rise does not distinguish between these components, it does not imply attribution to anthropogenic forcing. Where the literature does allow attribution of changes in natural, human or managed systems to anthropogenic climate forcing , this is highlighted in the assessment. Often the attribution of changes in the natural, human or managed systems to anthropogenic forcing can be done in a two-step approach where  an observed change in a climate-related system is attributed to anthropogenic climate forcing  and  changes in natural, human or managed systems are attributed to this change in the climate-related system .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report