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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/cpd-9-6161-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cpd-9-6161-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

  01 Nov 2013

01 Nov 2013

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This preprint was under review for the journal CP. A revision for further review has not been submitted.

Discrepancies of surface temperature trends in the CMIP5 simulations and observations on the global and regional scales

L. Zhao1,2, J. Xu2, and A. M. Powell Jr.3 L. Zhao et al.
  • 1Nanjing University of Information Science and Technology, Nanjing, China
  • 2Environmental Science and Technological Center, College of Science, George Mason University, Fairfax, Virginia, USA
  • 3NOAA/NESDIS/STAR, College Park, Maryland, USA

Abstract. Using the fifth Coupled Model Intercomparison Project (CMIP5) model simulations and two observational datasets, the surface temperature trends and their discrepancies have been examined. The temporal-spatial characteristics for the surface temperature trends are discussed. Different from a constant estimated linear trend for the entire simulation period of 1850–2012, a dynamical trend using running linear least squares fitting with the moving 10 yr time windows are calculated. The results show that the CMIP5 model simulations are generally in good agreement with the observational measurements for the global scale warming, but the temperature trends depend on the temporal change and the regional differences. Generally, contrary to the small discrepancies on the global scale, the large discrepancies are observed in the south- and north-polar regions and other sub-regions.

L. Zhao et al.

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L. Zhao et al.

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