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Developing capacity in process assessment and improvement in NZESM through the use of the single column version of the model.

Conway, Jono; Lewis, Jared; Querel, Richard; Revell, Laura; Tradowsky, Jordis; Varma, Vidya; Williams, Jonny

The New Zealand Earth System Model (NZESM) is a powerful tool for simulating the climate system in the Southern Hemisphere's “Deep South”. However, its complexity can make it difficult to assess how well NZESM represents some physical processes occurring in the real world. The single column version of NZESM reduces this complexity and runs 22,000 times faster than the full model, thus allowing easier validation of different processes with NZESM. The project’s primary aim is to show how the model can be used to calculate surface and top-of-the-atmosphere radiances from vertical profile measurements of temperature, pressure, water vapour and ozone. The initial focus will be on measurements from Scott Base (including Arrival Heights) and the AWARE (Atmospheric Radiation Measurement, West Antarctica Radiation Experiment) campaign at McMurdo. This project will contribute to the Deep South National Science Challenge mission by developing an independent and cost-effective means to assess and validate the physical processes in NZESM essential for simulating climate in the Deep South.

Presented at Deep South National Science Challenge symposium, "UNDERSTANDING + ADAPTING TO FUTURE CLIMATE IN AOTEAROA NEW ZEALAND", held in Wellington, 4–6th September, Te Wharewaka o Pōneke , Wellington.
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