Hi all, I recently received a query about CM2 vertical coordinates:
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I’m a PhD student at TU Dresden, Germany. Currently, I’m investigating vertical velocity (omega; Pa/s) in an ensemble of CMIP6 models on different pressure levels. Unfortunately, the available omega data (wap) from ACCESS-CM2 on ESGF nodes do not fully meet my research requirements.
However, I have used the continuity equation to estimate omega on model levels and then interpolate to pressure levels when these models are on hybrid sigma coordinates (Equation 2.7 in IFS Documentation CY49R1 - Part III: Dynamics and Numerical Procedures). However, for the ACCESS-CM2 model, which is based on height coordinates, I have been unable to find the necessary information to estimate omega from the model output or how the integration would look like on height coordinates.
I would greatly appreciate any insights or guidance on how to calculate omega in this case.
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