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The sea level response to external forcings in historical simulations of CMIP5 climate models

Citation

Slangen, ABA and Church, JA and Zhang, Xuebin and Monselesan, DP, The sea level response to external forcings in historical simulations of CMIP5 climate models, Journal of Climate, 28, (21) pp. 8521-8539. ISSN 0894-8755 (2015) [Refereed Article]


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DOI: doi:10.1175/JCLI-D-15-0376.1

Abstract

Changes in Earth's climate are influenced by internal climate variability and external forcings, such as changes in solar radiation, volcanic eruptions, anthropogenic greenhouse gases (GHG), and aerosols. Although the response of surface temperature to external forcings has been studied extensively, this has not been done for sea level. Here, a range of climate model experiments for the twentieth century is used to study the response of global and regional sea level change to external climate forcings. Both the global mean thermosteric sea level and the regional dynamic sea level patterns show clear responses to anthropogenic forcings that are significantly different from internal climate variability and larger than the difference between models driven by the same external forcing. The regional sea level patterns are directly related to changes in surface winds in response to the external forcings. The spread between different realizations of the same model experiment is consistent with internal climate variability derived from preindustrial control simulations. The spread between the different models is larger than the internal variability, mainly in regions with large sea level responses. Although the sea level responses toGHGand anthropogenic aerosol forcing oppose each other in the global mean, there are differences on a regional scale, offering opportunities for distinguishing between these two forcings in observed sea level change.

Item Details

Item Type:Refereed Article
Keywords:aerosols, atmospheric temperature, climate change, climatology, earth (planet), greenhouse gases, sea level, volcanoes
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Climate Change Models
UTAS Author:Church, JA (Dr John Church)
UTAS Author:Zhang, Xuebin (Dr Xuebin Zhang)
ID Code:118834
Year Published:2015
Web of Science® Times Cited:13
Deposited By:Zoology
Deposited On:2017-07-20
Last Modified:2017-08-31
Downloads:86 View Download Statistics

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