Global assessments typically require global availability of consistent data, be they quantitative or qualitative, which has proven to be a constraining factor for attempts to assess global adaptation . For example, many countries face difficulties in reporting adequately on progress in implementing the Sendai Framework and risk-related SDGs . The availability of data also influences which variables can be eventually selected in an assessment. This limitation can affect the ability to meet the initial objectives and lead to biases in the framing and interpretation of assessment outcomes. For some variables, an alternative to relying on nationally provided data can be to develop new global data sets  or utilise data from Earth Observation . Adaptation is hence faced with a dilemma between globally available yet generic data and regionally or locally more detailed yet patchy data .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report