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Pre-industrial and mid-Pliocene simulations with NorESM-L
Z. S. Zhang1,2,3, K. Nisancioglu1,2, M. Bentsen1,2, J. Tjiputra1,2, I. Bethke1,2, Q. Yan3, B. Risebrobakken1,2, C. Andersson1,2, and E. Jansen1,2
1Bjerknes Centre for Climate Research, Allegaten 55, 5007, Bergen, Norway
2UNI Research, Allegaten 55, 5007, Bergen, Norway
3Nansen-Zhu International Research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029, Beijing, China
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Abstract. The mid-Pliocene period (3.3 to 3.0 Ma) is known as a warm climate with
atmospheric greenhouse gas levels similar to the present. As the climate at
this time was in equilibrium with the greenhouse forcing, it is a valuable
test case to better understand the long term response to high levels of
atmospheric greenhouse gases. In this study, we use the low resolution
version of the Norwegian Earth System Model (NorESM-L) to simulate the
pre-industrial and the mid-Pliocene climate. Comparison of the simulation
with observations demonstrates that NorESM-L simulates a realistic
pre-industrial climate. The simulated mid-Pliocene global mean surface air
temperature is 16.7 °C, which is 3.2 °C warmer than the
pre-industrial. The simulated mid-Pliocene global mean sea surface
temperature is 19.1 °C, which is 2.0 °C warmer than the
pre-industrial. The warming is relatively uniform globally, except for a
strong amplification at high latitudes.
 Notice on Discussion StatusThe requested discussion paper has a corresponding peer-reviewed
final revised paper in the journal Geoscientific Model Development (GMD). You are
encouraged to refer to the final revised version. Final Revised Paper (GMD) Discussion Paper (PDF, 5195 KB)
Citation: Zhang, Z. S., Nisancioglu, K., Bentsen, M., Tjiputra, J., Bethke, I., Yan, Q., Risebrobakken, B., Andersson, C., and Jansen, E.: Pre-industrial and mid-Pliocene simulations with NorESM-L, Geosci. Model Dev. Discuss., 5, 119-148, doi:10.5194/gmdd-5-119-2012, 2012. Bibtex EndNote Reference Manager XML
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