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marzo 2025
abril 2025

Rural heat matters: Mapping and mitigating farmworker heat stress

Martes 8 de Abril de 2025 • 12:00 hrs Seminario Extraordinario Sala de Videoconferencias 2do piso ICAyCC Instituto de Ciencias de la Atmósfera y Cambio Climático Ciudad Universitaria, CDMX   IMPARTE: Dr. Trent Biggs ┃ Invitado del Grupo de Hidrología y Meteorología.   RESUMEN: Farmworkers are vulnerable to climate change and exposure to heat stress. Here we describe an interdisciplinary approach to mapping, measuring and forecasting farmworker heat stress in the Imperial Valley, California. We combine climate modeling, remote sensing, in situ physiological measurements, model visualization, forecast analysis, policy analysis, and community interviews on communication strategies. We compare several indices including air temperature and wet bulb globe temperature (WBGT) and their impact on mandated, heat-related rest minutes. Key early findings include: a) crops harvested during the daytime in spring and summer, including orchards and grapes, have the greatest heat exposure; b) labor-intensive activities besides harvesting continue throughout the summer, including irrigation maintenance, with consequent potential heat exposure; c) the choice of heat index to mandate break times is critical: use of air temperature, which is the basis of regulations in California results in significantly fewer rest minutes than heat indices such as the WBGT; and d) air temperature and WBGT have increased during some but not all months over 1990-2022. The study demonstrates the use of integrated methods and disciplines for policy relevant research on heat stress in vulnerable communities.   SEMBLANZA: Trent Biggs has an MA and PhD from UCSB’s Geography Department (2003), where his dissertation focused on the impacts of deforestation on stream chemistry in the Brazilian Amazon basin. He had a postdoctoral fellowship with the International Water Management Institute in Hyderabad, India from 2003-2005, and joined the Department of Geography at San Diego State University in 2007. His lab’s research includes human-watershed-climate interactions, including the impacts of climate and land use on water quantity and quality, surface energy balance, sediment budgets, and channel morphology. Current study sites include Brazilian Amazon and the US-Mexico border region. Techniques include remote sensing of land cover and evapotranspiration, hydrological modeling, isotopic techniques, and real-time monitoring of water quality.   Te invitamos a seguir el seminario vía y en
08 Abr
12:00 pm - 1:00 pm
Sala de videoconferencias
ICAyCC, 2DO PISO - UNAM
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