In April 2025, Maris Sandstad, a Senior Advisor at CICERO, Norway, has presented METEOR in the context of the 2025 Seminar Series of the Coupled Model Intercomparison Project (CMIP) and the EGU General Assembly 2025.
METEOR stands for Multivariate Emulation of Time-Evolving and Overlapping Responses and is a spatially resolved impacts emulator. METEOR uses Earth system model output to emulate impact response patterns of varying decay timescales to forcing changes. In-built scaled emissions to forcing mapping enables a full chain emulation of impact variables from emissions scenarios to spatially resolved impacts. METEOR can emulate multiple independent forcer responses, relaying on at least one abrupt-CO2-change experiment as training data, and using either more abrupt forcer change experiments or a residual technique to emulate additional responses.
Both presentations focused on describing the model and its design philosophy and showed results for CMIP6 models trained on abrupt-4xCO2 and with a residual based emulation of sulphate aerosol responses applied to yearly mean temperature and precipitation. The flexibility of the framework allows application to a wide range of other more impact specific variables, and in addition the emulation patterns and timescales in themselves may reveal interesting patterns in the emulated data.
More details about the two presentations can be found in the links below:
Oral presentation at the CMIP Seminar Series 2025 (23 April 2025)
Poster presentation at the EGU General Assembly 2025 (29 April 2025)
