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Weather shocks

Gallic, Ewen; Vermandel, Gauthier (2020), Weather shocks, European Economic Review, 124, p. 103409. 10.1016/j.euroecorev.2020.103409

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Type
Article accepté pour publication ou publié
Date
2020-05
Journal name
European Economic Review
Volume
124
Publisher
Elsevier
Pages
103409
Publication identifier
10.1016/j.euroecorev.2020.103409
Metadata
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Author(s)
Gallic, Ewen cc
Aix-Marseille Sciences Economiques [AMSE]
Vermandel, Gauthier
Laboratoire d'Economie de Dauphine [LEDa]
Abstract (EN)
How much do weather shocks matter? The literature addresses this question in two isolated ways: either by looking at long-term effects through the prism of calibrated theoretical models, or by focusing on both short and long terms through the lens of empirical models. We propose a framework that reconciles these two approaches by taking the theory to the data in two complementary ways. We first document the propagation mechanism of a weather shock using a Vector Auto-Regressive model on New Zealand Data. To explain the mechanism, we build and estimate a general equilibrium model with a weather-dependent agricultural sector to investigate the weather’s business cycle implications. We find that weather shocks: (i) explain about 35% of GDP and agricultural output fluctuations in New Zealand; (ii) entail a welfare cost of 0.30% of permanent consumption; (iii) critically increases the macroeconomic volatility under climate change, resulting in a higher welfare cost peaking to 0.46% in the worst case scenario of climate change.
Subjects / Keywords
Agriculture; Business cycles; Climate change; Weather shocks
JEL
Q54 - Climate; Natural Disasters and Their Management; Global Warming
E32 - Business Fluctuations; Cycles
C13 - Estimation: General

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