Meteorological Conditions During Record Wildfires in the Paranáriver Delta: Anomalies and Application of a Clustering Model
Year: 2025
Type: article
Abstract: About 95 % of wildfires are caused by human activities. The burning of grasslands as a method of sweeping for livestock and agricultural exploitation has been implemented for over two centuries on the American continent. Every winter, fires are used to promote the regrowth of forage species in the Paraná River Delta. Unusual weather conditions and climate change have intensified the global impact of wildfires. In 2020, the accumulation and spread of unprecedented wildfire emissions affected the inhabitants of the Rosario Metropolitan Area (AMR), Argentina. This work analyzed meteorological conditions, the number of active fires detected by the VIIRS satellite instrument, and the concentration of fine particulate matter (PM2.5) measured in the AMR. Anomalies of precipitation, relative humidity, and temperature recorded in situ between June and August in the period 2010- 2020 were calculated. The results show that for the year 2020, ambient humidity and temperature had an average decrease of 10 % and 3 %, respectively, while accumulated precipitation had a reduction of about 70 % with respect to previous years. The clustering model showed that the highest median of Number of active fires (NI) coincides with the lowest accumulated precipitation and low relative humidity, as well as prevailing winds from the northwest. Wind analysis reveals that currents from the northwest direction promoted larger surface fire impacts in the Paraná River Delta, and northeast winds increased PM2.5 levels in the AMR. These findings underline the importance of considering meteorological conditions in assessing environmental risks and in formulating mitigation strategies against air pollution and forest fires.
Source: Anales/Anales AFA
Authors: Instituto de Física Rosario – Universidad Nacional Rosario – Consejo Nacional de Investigaciones Científicas y Técnicas, 27 deFebrero 210BIS – (S2000EKF) Rosario – Argentina, A. Ipiña, T. Rodriguez, Centro de Investigación e Innovación en Tecnologías de la Información y Comunicación, Cto. Tecnopolo Sur 112 – (20313)Aguascalientes – México, A. Orlandini, 1Instituto de Física Rosario – Universidad Nacional Rosario – Consejo Nacional de Investigaciones Científicas y Técnicas, 27 deFebrero 210BIS – (S2000EKF) Rosario – Argentina 3Facultad de Ciencias Exactas, Ingeniería y Agrimensura – Univ. Nac. Rosario, Ave. Pellegrini 250 – (S2000) Rosario – Argentina, F. Gómez-Fava, Facultad de Ciencias Exactas, Ingeniería y Agrimensura – Univ. Nac. Rosario, Ave. Pellegrini 250 – (S2000) Rosario – Argentina, G. López-Padilla, Investigador independiente, Circ. Medicina 9222 – (27087) Torreón – Coahuila – México, M. Arellano-Vazquez, Centro de Investigación e Innovación en Tecnologías de la Información y Comunicación, Cto. Tecnopolo Sur 112 – (20313)Aguascalientes – México
Language: English
Topic: Fire effects on ecosystems
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
SDGs: Climate action, Life on land
Open Access status: diamond
OpenAlex ID: W4408999974