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1.Poster Title | Identifying and |
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fixing water conservation errors Fixing Water Conservation Errors in the ACME | atmosphere modelAtmosphere Model | 2.Authors | |
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and PNNL ATM team | 3.Group | Atmosphere |
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4.Experiment |
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5.Poster Category | Problem/Solution |
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6.Submission Type | Poster |
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or Presentation |
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name | ACME_2016_KaiZhang.pdf |
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page | 2016-11-09 ACME Fall Meeting Posters |
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height | 400 |
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Abstract
Significant water conservation errors were found in both the atmosphere-only and the coupled model simulations with the ne30L72 ACME v1.0_alpha7 model. The water Water conservation error errors at different model resolutions (ne11L72, ne16L72, ne30L72, and ne120L72) is are investigated using short simulations. For the atmosphere component, we have identified several water conservation error sources, which include:
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The error magnitude from individual sources changes with the model horizontal resolution. Solutions are found to eliminate the water conservation error from sources (1-4). By using an alternative physics-dynamics coupling method, the water conservation error in the ne30L72 atmosphere model decreases by ~50 times. The error can be further reduced by one order of magnitude if two new fixers for error sources (3-4) are used. Future work needs to done for reducing the internal water and energy conservation errors in individual processes/parameterizations.Water conservation errors in recent (alpha 8+) AMIP and coupled simulations will also be discussed.