Skip to content

Does CLIMADA consider temporal dependence between rare extreme events in synthetic hazard simulations? #1045

Description

@francescamogavero

I'm using CLIMADA for probabilistic flood risk assessment with synthetic event sets, and I noticed that multiple events are simulated for each year.

In reality, extreme flood events (such as 1-in-100 or 1-in-500 year events) are very unlikely to occur in consecutive years.

Does CLIMADA model this kind of temporal dependence between events?

Or are the events treated as independent in terms of their occurrence across the years?

I'm especially interested in how this might affect multi-year risk projections or adaptation planning.

Activity

  1. chahank commented on Apr 11, 2025

    @chahank
    Member

    As noted in #1041, we cannot help you with the EIOPA CLIMADA app.

    I restate what I said there: CLIMADA does NOT model hazards, it is up to the user to decide what dataset to use. If you use a dataset without time dependence, then there is no time dependence. If you use a time-dependent dataset, then there is time dependence.

  2. chahank commented on Apr 11, 2025

    @chahank
    Member

    In reality, extreme flood events (such as 1-in-100 or 1-in-500 year events) are very unlikely to occur in consecutive years.

    This is not necessarily true. This depends on the correlations in the climate system relative to the considered hazard.

    It is not less likely to get 6 on a dice on a second throw if you rolled a 6 first.

  3. locked and limited conversation to collaborators on May 30, 2025
  4. converted this issue into a discussion #1058 on May 30, 2025
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions