Are Climate Model Simulations of Clouds Improving? An Evaluation Using the ISCCP Simulator

TitleAre Climate Model Simulations of Clouds Improving? An Evaluation Using the ISCCP Simulator
Publication TypeJournal Article
Year of Publication2013
JournalJournal of Geophysical Research - Atmospheres
Pages1-4
Abstract / Summary

The annual cycle climatology of cloud amount, cloud-top pressure, and optical thickness in two generations of climate models is compared to satellite observations to identify changes over time in the fidelity of simulated clouds. In more recent models, there is widespread reduction of a bias associated with too many highly reflective clouds, with the best models having eliminated this bias. With increased amounts of clouds with lesser reflectivity, the compensating errors that permit models to simulate the time-mean radiation balance have been reduced. Errors in cloud amount as a function of height or climate regime on average show little or no improvement, although greater improvement can be found in individual models.

URLhttp://onlinelibrary.wiley.com/doi/10.1002/jgrd.50141/abstract
DOI10.1002/jgrd.50141
Journal: Journal of Geophysical Research - Atmospheres
Year of Publication: 2013
Pages: 1-4

The annual cycle climatology of cloud amount, cloud-top pressure, and optical thickness in two generations of climate models is compared to satellite observations to identify changes over time in the fidelity of simulated clouds. In more recent models, there is widespread reduction of a bias associated with too many highly reflective clouds, with the best models having eliminated this bias. With increased amounts of clouds with lesser reflectivity, the compensating errors that permit models to simulate the time-mean radiation balance have been reduced. Errors in cloud amount as a function of height or climate regime on average show little or no improvement, although greater improvement can be found in individual models.

DOI: 10.1002/jgrd.50141
Citation:
Klein, SA, Y Zhang, MD Zelinka, RN Pincus, JS Boyle, and PJ Gleckler.  2013.  "Are Climate Model Simulations of Clouds Improving? An Evaluation Using the ISCCP Simulator."  Journal of Geophysical Research - Atmospheres 1-4.  https://doi.org/10.1002/jgrd.50141.