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Autor:innen: 
Erscheinungsjahr: 
2025
Schriftenreihe/Nr.: 
Working Papers in Economics and Management No. 2-2025
Verlag: 
Bielefeld University, Faculty of Business Administration and Economics, Bielefeld
Zusammenfassung: 
In this paper it is shown that climate models are characterized by uncertainty and its causes are pointed out. It is well known that a higher greenhouse gas concentration raises the radiative forcing of the earth and the physics behind it is well understood. However, as regards the feedback effects of higher temperatures, parameter uncertainty, model uncertainty and the chaotic nature of the climate system give rise to a considerable degree of ignorance regarding the climate system. Given this uncertainty costly CO2 abatement measures are difficult to justify with the currently available technology. But, due to technical progress more efficient technologies are expected to reduce abatement costs in the future such that a net zero emission policy could be justified to avoid possible, but uncertain, climate damages. In any case, fixing a deadline by which the net zero goal must be met is not welfare maximizing and more flexibility is needed to avoid prohibitive costs.
Schlagwörter: 
Global warming
uncertainty
technology
policy implications
JEL: 
E61
Q54
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