Extreme weather events and high Colombian food prices: A non-stationary extreme value approach1

Given the importance of climate change and the increase of its severity under extreme weather events, we analyze the main drivers of high food prices in Colombia between 1985 and 2020 focusing on extreme weather shocks like a strong El Nino. We estimate a non-stationary extreme value model for Colombian food prices. Our findings suggest that perishable foods are more exposed to extreme weather conditions in comparison to processed foods. In fact, an extremely low precipitation level explains only high prices in perishable foods. The risk of high perishable food prices is significantly larger for low rainfall levels (dry seasons) compared to high precipitation levels (rainy seasons). This risk gradually results in higher perishable food prices. It is nonlinear and is also significantly larger than the risk related to changes in the US dollar-Colombian peso exchange rate and fuel prices. Those covariates also explain high prices for both perishable and processed foods. Finally, we find that the events associated with the strongest El Nino in 1988 and 2016 are expected to reoccur once every 50 years.

Automated summary

The study found that the prices of perishable foods are more easily affected by extreme weather conditions, with a more significant relationship between dry seasons and perishable food prices. The risk of perishable food price increases gradually with the increase in drought levels. Additionally, changes in the US dollar-Colombian peso exchange rate and fuel prices also impact food prices.