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On Defining Climate and Climate Change

Werndl, Charlotte (2014) On Defining Climate and Climate Change. [Preprint]

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Abstract

The aim of the paper is to provide a clear and thorough conceptual analysis of the main candidates for a definition of climate and climate change. Five desiderata on a definition of climate are presented: it should be empirically applicable, it should correctly classify different climates, it should not depend on our knowledge, is should be applicable to the past, present and future and it should be mathematically well-defined. Then five definitions are discussed: climate as distribution over time for constant external conditions, climate as distribution over time when the external conditions vary as in reality, climate as distribution over time relative to regimes of varying external conditions, climate as the ensemble distribution for constant external conditions, and climate as the ensemble distribution when the external conditions vary as in reality. The third definition is novel and is introduced as a response to problems with existing definitions. The conclusion is that most definitions encounter serious problems and that the third definition is most promising.


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Item Type: Preprint
Creators:
CreatorsEmailORCID
Werndl, Charlottec.s.werndl@lse.ac.uk
Keywords: climate, climate change, definitions, climate policy
Subjects: Specific Sciences > Mathematics
Specific Sciences > Physics
Specific Sciences > Probability/Statistics
General Issues > Science Policy
Depositing User: Charlotte Werndl
Date Deposited: 06 May 2014 12:59
Last Modified: 06 May 2014 12:59
Item ID: 10660
Subjects: Specific Sciences > Mathematics
Specific Sciences > Physics
Specific Sciences > Probability/Statistics
General Issues > Science Policy
Date: 2014
URI: http://philsci-archive.pitt.edu/id/eprint/10660

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