Linearized ozone parameterisation within the um 

Speaker:  Robert waters

Chair(S): Maria Russo

wednesday february 26 2025, 13:00

Ozone plays a significant role in stratospheric dynamics, which impacts weather within the troposphere at the sub-seasonal to seasonal scales. While many models rely on prescribed ozone fields, linear ozone parameterisation offer a more responsive method for predicting potential variability whilst remaining computationally inexpensive. This talk presents the initial implementation of the linearized ozone scheme from Cariolle & Teyssèdre (2007) within the Unified Model. The impact on stratospheric temperatures is examined and the results compared against fully coupled UM-UKCA model runs. Ozone plays a significant role in stratospheric dynamics, which impacts weather within the troposphere at the sub-seasonal to seasonal scales. While many models rely on prescribed ozone fields, linear ozone parameterisation offer a more responsive method for predicting potential variability whilst remaining computationally inexpensive. This talk presents the initial implementation of the linearized ozone scheme from Cariolle & Teyssèdre (2007) within the Unified Model. The impact on stratospheric temperatures is examined and the results compared against fully coupled UM-UKCA model runs. 

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