On the (ir)relevance of heatwaves in climate change impacts on European agriculture

Charlotte Fabri (), Michele Moretti and Steven Van Passel
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Charlotte Fabri: University of Antwerp
Michele Moretti: University of Antwerp
Steven Van Passel: University of Antwerp

Climatic Change, 2022, vol. 174, issue 1, No 16, 20 pages

Abstract: Abstract The Ricardian model is a widely used approach based on cross-sectional regression analysis to estimate climate change impacts on agricultural productivity. Up until now, researchers have focused on the impacts of gradual changes in temperature and precipitation, even though climate change is known to encompass also changes in the severity and frequency of extreme weather events. This research investigates the impact of heatwaves on European agriculture, additional to the impact of average climate change. Using a dataset of more than 60,000 European farms, the study examines whether adding a measure for heatwaves to the Ricardian model influences its results. We find that heatwaves have a minor impact on agricultural productivity and that this impact is moderated by average temperature. In colder regions, farm productivity increases with the number of heatwave days. For warmer regions, land values decrease with heatwave frequency. Despite the moderating effect, the marginal effect of heatwave frequency, i.e. the percentage change in agricultural land values caused by one more heatwave day per year, is small in comparison to the effect of average temperature increases. Non-marginal effects are found to be relevant, but only in the case of increased heatwave frequency. According to our results, farms are not expected to suffer more from extreme weather than from mean climate change, as was claimed by several previous studies.

Keywords: Ricardian analysis; Climate change; European agriculture; Heatwaves; Extreme weather events (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10584-022-03438-4

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