Characterizing half-a-degree difference: a review of methods for identifying regional climate responses to global warming targets

The Paris Agreement long-term global temperature goal refers to two global warming levels: well below 2°C and 1.5°C above preindustrial. Regional climate signals at specific global warming levels, and especially the differences between 1.5°C and 2°C, are not well constrained, however. In particular, methodological challenges related to the assessment of such differences have received limited attention. This article reviews alternative approaches for identifying regional climate signals associated with global temperature limits, and evaluates the extent to which they constitute a sound basis for impacts analysis.

Date Published
2017, January

Authors
James, R., Washington, R., Schleussner, C.-F., Rogelj, J. & Conway, D.

Journal
Wiley Interdiscip. Rev. Clim. Chang.
e457, doi:10.1002/wcc.457

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