Articles | Volume 19, issue 14
https://doi.org/10.5194/gmd-19-6991-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-6991-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Model evaluation paper
| 
30 Jul 2026
Model evaluation paper |
| 30 Jul 2026
| 30 Jul 2026
Spectral nudging impacts on precipitation downscaling in the Conformal Cubic Atmospheric Model, version CCAM-2504: insights from summer 2011
The Commonwealth Scientific and Industrial Research Organisation, Melbourne, Victoria, Australia
Marcus J. Thatcher
The Commonwealth Scientific and Industrial Research Organisation, Melbourne, Victoria, Australia
Phuong Loan Nguyen
Climate Change Research Centre, UNSW Sydney, Sydney, NSW, Australia
Climate & Atmospheric Science, NSW Department of Climate Change, Energy, the Environment and Water, Sydney, NSW, Australia
Lisa V. Alexander
Climate Change Research Centre, UNSW Sydney, Sydney, NSW, Australia
ARC Centre of Excellence for the Weather of the 21st Century, UNSW Sydney, Sydney, NSW, Australia
John L. McGregor
The Commonwealth Scientific and Industrial Research Organisation, Melbourne, Victoria, Australia
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Short summary
Understanding future rainfall is essential for managing floods and water resources in Australia. We tested different ways of helping a regional climate model better represent large-scale weather patterns during the extreme 2010–2011 La Niña event and compared the results with observations. The best approach produced more realistic atmospheric conditions and rainfall, increasing confidence in future climate projections and helping improve information for planning and climate adaptation
Understanding future rainfall is essential for managing floods and water resources in Australia....
