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De-climatizing food security: Lessons from climate change micro-simulations in Peru

This paper brings advances in weather data collection and modeling, and developments in socioeconomic climate microsimulations to bear on the analysis of the implications of climate change (CC) in the design of public policies to combat food insecurity. It uses new downscaled predictions of future c...

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Detalles Bibliográficos
Autores principales: Anríquez, Gustavo, Toledo, Gabriela
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6764669/
https://www.ncbi.nlm.nih.gov/pubmed/31560703
http://dx.doi.org/10.1371/journal.pone.0222483
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author Anríquez, Gustavo
Toledo, Gabriela
author_facet Anríquez, Gustavo
Toledo, Gabriela
author_sort Anríquez, Gustavo
collection PubMed
description This paper brings advances in weather data collection and modeling, and developments in socioeconomic climate microsimulations to bear on the analysis of the implications of climate change (CC) in the design of public policies to combat food insecurity. It uses new downscaled predictions of future climate in 2050, derived from three Earth System Models calibrated with a new historical weather station dataset for Peru. This climate data is used in a three-stage socioeconomic microsimulation model that includes climate risk, and deals with the endogeneity of incomes and simultaneity of expected food consumption and its variability. We estimate the impact of CC on agricultural yields, and find results consistent and fully bounded within what the global simulations literature has found, with yields falling up to 13% in some regions. However, we show that these drops (and increases) in yields translate to much smaller changes in food consumption, and also surprisingly, to very minor impacts on vulnerability to food insecurity. The document explores what explains this surprising result, showing that in addition to characteristics that are specific to Peru, there are household and market mediating mechanisms that are available in all countries, which explain how changes in yields, and corresponding farm incomes have a reduced impact in vulnerability to food insecurity. Finally, in light of these findings, we explore which policies might have greater impact in reducing food insecurity in contexts of hunger prevalence.
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spelling pubmed-67646692019-10-12 De-climatizing food security: Lessons from climate change micro-simulations in Peru Anríquez, Gustavo Toledo, Gabriela PLoS One Research Article This paper brings advances in weather data collection and modeling, and developments in socioeconomic climate microsimulations to bear on the analysis of the implications of climate change (CC) in the design of public policies to combat food insecurity. It uses new downscaled predictions of future climate in 2050, derived from three Earth System Models calibrated with a new historical weather station dataset for Peru. This climate data is used in a three-stage socioeconomic microsimulation model that includes climate risk, and deals with the endogeneity of incomes and simultaneity of expected food consumption and its variability. We estimate the impact of CC on agricultural yields, and find results consistent and fully bounded within what the global simulations literature has found, with yields falling up to 13% in some regions. However, we show that these drops (and increases) in yields translate to much smaller changes in food consumption, and also surprisingly, to very minor impacts on vulnerability to food insecurity. The document explores what explains this surprising result, showing that in addition to characteristics that are specific to Peru, there are household and market mediating mechanisms that are available in all countries, which explain how changes in yields, and corresponding farm incomes have a reduced impact in vulnerability to food insecurity. Finally, in light of these findings, we explore which policies might have greater impact in reducing food insecurity in contexts of hunger prevalence. Public Library of Science 2019-09-27 /pmc/articles/PMC6764669/ /pubmed/31560703 http://dx.doi.org/10.1371/journal.pone.0222483 Text en © 2019 Anríquez, Toledo http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Anríquez, Gustavo
Toledo, Gabriela
De-climatizing food security: Lessons from climate change micro-simulations in Peru
title De-climatizing food security: Lessons from climate change micro-simulations in Peru
title_full De-climatizing food security: Lessons from climate change micro-simulations in Peru
title_fullStr De-climatizing food security: Lessons from climate change micro-simulations in Peru
title_full_unstemmed De-climatizing food security: Lessons from climate change micro-simulations in Peru
title_short De-climatizing food security: Lessons from climate change micro-simulations in Peru
title_sort de-climatizing food security: lessons from climate change micro-simulations in peru
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6764669/
https://www.ncbi.nlm.nih.gov/pubmed/31560703
http://dx.doi.org/10.1371/journal.pone.0222483
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