The use of regression for assessing a seasonal forecast model experiment
We show how factorial regression can be used to analyse numerical model experiments, testing the effect of different model settings. We analysed results from a coupled atmosphere–ocean model to explore how the different choices in the experimental set-up influence the seasonal predictions. These cho...
Published in: | Earth System Dynamics |
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Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2016
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Subjects: | |
Online Access: | https://doi.org/10.5194/esd-7-851-2016 https://noa.gwlb.de/receive/cop_mods_00011228 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00011185/esd-7-851-2016.pdf https://esd.copernicus.org/articles/7/851/2016/esd-7-851-2016.pdf |
Summary: | We show how factorial regression can be used to analyse numerical model experiments, testing the effect of different model settings. We analysed results from a coupled atmosphere–ocean model to explore how the different choices in the experimental set-up influence the seasonal predictions. These choices included a representation of the sea ice and the height of top of the atmosphere, and the results suggested that the simulated monthly mean air temperatures poleward of the mid-latitudes were highly sensitivity to the specification of the top of the atmosphere, interpreted as the presence or absence of a stratosphere. The seasonal forecasts for the mid-latitudes to high latitudes were also sensitive to whether the model set-up included a dynamic or non-dynamic sea-ice representation, although this effect was somewhat less important than the role of the stratosphere. The air temperature in the tropics was insensitive to these choices. |
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