Archive for the ‘Materiales Digitales’ Category

Exposición: La megalópolis mexicana y su biodiversidad frente a la crisis climática

Exposición: La megalópolis mexicana y su biodiversidad frente a la crisis climática

La exposición fotográfica «La megalópolis mexicana y su biodiversidad frente a la crisis climática» estará en el ICAyCC!

En una curaduría que parte de cuatro grandes ejes: medio natural; antropización y cambio climático; biodiversidad y servicios ecosistémicos y acciones y estudios de conservación, podrán apreciar la biodiversidad que habita en nuestra ciudad.

Panorama general del cambio climático y contaminación atmosférica en la Megalópolis del Valle de México

Panorama general del cambio climático y contaminación atmosférica en la Megalópolis del Valle de México

¿Qué sabemos sobre cambio climático en México?

Módulo 25. Investigación e incidencia ante el cambio climático en la megalópolis del Valle de México

«Panorama general del cambio climático y contaminación atmosférica en la Megalópolis del Valle de México» – Dra. Amparo Martínez Arroyo, Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM y Dr. Francisco Estrada Porrúa, Programa de Investigación en Cambio Climático, UNAM.

Este módulo se lleva a cabo en el marco del proyecto “Herramientas y estrategias para la toma de decisiones en cambio climático, calidad del aire y desarrollo sostenible en la megalópolis del Valle de México” apoyado por el CONAHCYT en el año 2024.

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The Assessment of Impacts and Risks of Climate Change on Agriculture (AIRCCA) model: a tool for the rapid global risk assessment for crop yields at a spatially explicit scale

The Assessment of Impacts and Risks of Climate Change on Agriculture (AIRCCA) model: a tool for the rapid global risk assessment for crop yields at a spatially explicit scale

Abstract

A main channel through which climate change is expected to affect the economy is the agricultural sector. Large spatial variability in these impacts and high levels of uncertainty in climate change projections create methodological challenges for assessing the consequences this sector could face. Crop emulators based on econometric fixed-effects models that can closely reproduce biophysical models are estimated. With these reduced form crop emulators, we develop AIRCCA, a user-friendly software for the assessment of impacts and risks of climate change on agriculture, that allows stakeholders to make a rapid global assessment of the effects of climate change on maize, wheat and rice yields. AIRCCA produces spatially explicit probabilistic impact scenarios and user-defined risk metrics for the main four Intergovernmental Panel on Climate Change’s (IPCC) emissions scenarios.

Cite this article

Francisco Estrada, W. J. Wouter Botzen & Oscar Calderon-Bustamante (2020) The Assessment of Impacts and Risks of Climate Change on Agriculture (AIRCCA) model: a tool for the rapid global risk assessment for crop yields at a spatially explicit scale, Spatial Economic Analysis, 15:3, 262-279, DOI: 10.1080/17421772.2020.1754448

Synergistic impacts of global warming and thermohaline circulation collapse on amphibians

Synergistic impacts of global warming and thermohaline circulation collapse on amphibians

Abstract

Impacts on ecosystems and biodiversity are a prominent area of research in climate change. However, little is known about the effects of abrupt climate change and climate catastrophes on them. The probability of occurrence of such events is largely unknown but the associated risks could be large enough to influence global climate policy. Amphibians are indicators of ecosystems’ health and particularly sensitive to novel climate conditions. Using state-of-the-art climate model simulations, we present a global assessment of the effects of unabated global warming and a collapse of the Atlantic meridional overturning circulation (AMOC) on the distribution of 2509 amphibian species across six biogeographical realms and extinction risk categories. Global warming impacts are severe and strongly enhanced by additional and substantial AMOC weakening, showing tipping point behavior for many amphibian species. Further declines in climatically suitable areas are projected across multiple clades, and biogeographical regions. Species loss in regional assemblages is extensive across regions, with Neotropical, Nearctic and Palearctic regions being most affected. Results underline the need to expand existing knowledge about the consequences of climate catastrophes on human and natural systems to properly assess the risks of unabated warming and the benefits of active mitigation strategies.

Cite this article

Velasco, J.A., Estrada, F., Calderón-Bustamante, O. et al. Synergistic impacts of global warming and thermohaline circulation collapse on amphibians. Commun Biol 4, 141 (2021). https://doi.org/10.1038/s42003-021-01665-6

Evaluating Risk and Possible Adaptations to Climate Change Under a Socio-Ecological System Approach

Evaluating Risk and Possible Adaptations to Climate Change Under a Socio-Ecological System Approach

Abstract

Evidence suggests that climate change could drastically reduce Mexico’s agricultural productivity with severe socio-ecological consequences. Population growth and the increasing demand of resources will exacerbate these impacts. Focusing on rainfed maize production, we evaluate the socio-ecological risk that municipalities currently face and how climate change could modify it. Municipalities were classified based on their biophysical and socioeconomic traits like temperature, precipitation, population, gross domestic product, marginalization, and agricultural subsidies. The study identifies municipalities that would face higher risk under climate change conditions, and it evaluates whether increases in agricultural subsidies could be effective for reducing the farmers’ future risk. Our results show that during the 2010’s, 36.8% of the municipalities and 15% of the population were at very high and high risk, respectively. By 2070, under a high-warming scenario these figures increase to 56.5 and 18.5%. We find that a generalized augment in agricultural subsidies is not enough to compensate for the effects of climate change on the socio-ecological risk of rainfed maize producers. We suggest that transformative adaptation is required for managing the agricultural risk that socio-ecological systems experience under climate change conditions. Such adaptation strategies should include poverty alleviation, promotion of resistant and native varieties of crops, capacity building to improve management and water use, sustainable technification, and soil restoration.

Cite this article

Haro A, Mendoza-Ponce A, Calderón-Bustamante Ó, Velasco JA and Estrada F (2021) Evaluating Risk and Possible Adaptations to Climate Change Under a Socio-Ecological System Approach. Front. Clim. 3:674693. doi: 10.3389/fclim.2021.674693

Conversatorio con Amparo Martínez Arroyo

Conversatorio con Amparo Martínez Arroyo

Planeteando

Conversatorio: Cambio climático, conocimiento y ciencia

Conversatorio: Cambio climático, conocimiento y ciencia

Red Universitaria de Cambio Climático

Trazando el pasado para entender el futuro: Cambio Climático y Paleocenografía

Trazando el pasado para entender el futuro: Cambio Climático y Paleocenografía

MÓDULO 24: Investigación sobre cambio climático en la UNAM: Programa Universitario de Estudios de la Diversidad Cultural y la Interculturalidad.

Presenta: Dra. Ligia Pérez Cruz Instituto de Geofísica
Fecha: Se realizo el 22 de marzo de 2024 de manera virtual.

¿Qué sabemos sobre el cambio climático en México?

¿Qué sabemos sobre el cambio climático en México?

Módulo 15 – Agua y cambio Climático.

Presenta: Dr. Gonzalo Hatch Kuri, Dra. Marisa Mazari Hiriat y Dra. Rocío del Carmen Vargas Castilleja.
Moderador: Dr. Francisco Estrada Porrúa. Se realizo el 26 de Enero de 2023 de manera virtual.