Framework for Return Period calculation

[matamadio]

Some hazard layers are produced from annul data into individual "total" or "mean" value layers, such as:

• Drought (frequency of events over an exposure threshold)
• Air pollution (mean of mean annual values, see also Update air quality hazard and vulnerability #17 )
• New heat indices (see New heat stress data #14)

Looking to improve the representativeness of these data, we could develop an approach to obtain a probabilistic representation of hazard in terms of multiple return periods from a long series of observed or simulated past records.