Tuning the climate of a global model

During a development stage global climate models have their properties adjusted or tuned in various ways to best match the known state of the Earth's climate system. These desired properties are observables, such as the radiation balance at the top of the atmosphere, the global mean temperature, sea ice, clouds and wind fields. The tuning is typically performed by adjusting uncertain, or even non‐observable, parameters related to processes not explicitly represented at the model grid resolution. The practice of climate model tuning has seen an increasing level of attention because key model properties, such as climate sensitivity, have been shown to depend on frequently used tuning parameters. Here we provide…

• DK
  Deutsches Klimarechenzentrum
• EC
  European Commission

  Awards: FP7/2007-2013, 2007-2013, FP7/2007, 244067
• M
  Max-Planck-Gesellschaft