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Description
[PART OF THE 2024 CAS CLIMATE RISK VIRTUAL SEMINAR]
This presentation will discuss the North American Actuaries Climate Index – both the current version of the index, referred to as “ACI 1.1”, and an improved version, referred to as “ACI 2.0”, which is presently under development.
Alp, Steve, and Patrick are members of the working group tasked with the development of ACI 2.0. They will discuss the strengths and weaknesses of ACI 1.1, the motivations for developing version 2.0, and the ideas and concepts that are presently being examined and tested as part of the ACI 2.0 development process. The presentation will cover the following ACI 2.0 development considerations:
• Possible data sources: station data, gridded interpolated data, gridded reanalysis data;
• Data elements (weather and sea-level variables);
• Metrics for summarizing local-level weather (with emphasis on weather extremes);
• Options for aggregating local metrics across both space and time;
• Aggregation across elements;
• Options for displaying results.
Learning Objectives:
- Understand main weather data types: station data (e.g. GHCN), gridded interpolated data (e.g. GHCNDEX), and gridded reanalysis data (e.g. ERA5).
- Test weather time-series data for long-term trends.
- Capture weather extremes in a manner that is statistically significant.