Articles | Volume 10, issue 12
Geosci. Model Dev., 10, 4647–4664, 2017
Geosci. Model Dev., 10, 4647–4664, 2017

Development and technical paper 21 Dec 2017

Development and technical paper | 21 Dec 2017

Effectiveness and limitations of parameter tuning in reducing biases of top-of-atmosphere radiation and clouds in MIROC version 5

Tomoo Ogura et al.

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Short summary
Present-day climate simulated by coupled ocean atmosphere models exhibits significant biases in top-of-atmosphere radiation and clouds. This study shows that only limited part of the biases can be removed by parameter tuning in a climate model. The results underline the importance of improving parameterizations in climate models based on cloud process studies. Implementing a shallow convection parameterization is suggested as a potential measure to alleviate the biases.