My research focus is to understand the susceptibility of the climate system to perturbations, such as a change in atmospheric CO2. This includes feedback mechanisms that either amplify or dampen the global mean temperature response, changes in the global mean hydrological cycle and the ubiquitous Arctic amplification of climate change. I also participate in the development of the ICON climate model.

Here are some highlights from my recent publications:

• Mauritsen, T. and R. Pincus. Committed warming inferred from observations. Nature Climate Change, doi:10.1038/nclimate3357, 2017 (link, data and scripts).
• Rädel, G. et al. Amplification of El Nino by cloud longwave coupling to atmospheric circulation. Nature Geoscience, 9(2):106–110, 2016 (link).
• Mauritsen, T. and B. Stevens. Missing iris-effect as a possible cause of muted hydrological change and high climate sensitivity in models. Nature Geoscience, doi:10.1038/ngeo2414, 2015 (link, data and code changes ).
• Pithan, F. and T. Mauritsen. Arctic amplification dominated by temperature feedbacks in contemporary climate models. Nature Geoscience, 7(3), 181-184, 2014 (link).
• Mauritsen, T. et al. 2012, Tuning the climate of a global model. JAMES, 4,  doi:10.1029/2012MS000154 (link).

 I lead the Climate Dynamics working group. 

Radiative kernels

Radiative kernels can be useful tools to estimate feedbacks in the climate system. We have calculated radiative kernels for ECHAM6, and these are made available here:

https://swiftbrowser.dkrz.de/public/dkrz_0c07783a-0bdc-4d5e-9f3b-c1b86fac060d/Radiative_kernels/

The netcdf files should be self-explanatory, and further information is available in:

Block, K., and T. Mauritsen, 2013: Forcing and feedback in the MPI-ESM-LR coupled model under abruptly quadrupled CO2, J. Adv. Model. Earth Syst., 5, 676–691, doi:10.1002/jame.20041 (link).