Climate Change Research ›› 2021, Vol. 17 ›› Issue (3): 305-316.doi: 10.12006/j.issn.1673-1719.2020.162

• Changes in Climate System • Previous Articles     Next Articles

Differences in three sets of volcanic forcing data and their impacts on climate model simulation

GAO Ya(), GAO Chao-Chao()   

  1. College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310000, China
  • Received:2020-07-31 Revised:2020-09-14 Online:2021-05-30 Published:2021-06-01
  • Contact: GAO Chao-Chao;


Gao2008, Crowley2013 and Sigl2015, the three groups of volcanic forcing data are based on polar ice-core reconstruction. Because every reconstruction uses different ice core records and analysis methods, the results are different, which will affect climate models application. This paper combed in detail the differences among the three groups regarding the original ice-core data used for reconstruction, the volcanic signal identification and extraction methodology, and estimation of ice-sheet sulfate deposition; introduced the assumptions made about the season and latitude of unknown volcanic events, and the conversion from polar sulfate deposition flux to stratospheric radiative flux, etc.; and summarized the common problems in the volcano chronologies. By summarizing the impact of these reconstruction uncertainties on climate model application, this study provides additional perspectives on model-proxy comparison and climate impact assessments on historical volcanism.

Key words: Volcanic forcing data, Polar ice core, Climate simulation, Impact assessment

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