ENSO effects on the relationship between aerosols and evapotranspiration in the south of the Amazon biome

Palácios, Rafael; Castagna, Daniela; Barbosa, Luzinete; Souza, Adilson P.; Imbiriba, Breno; Zolin, Cornélio A.; Nassarden, Danielle; Duarte, Leilane; Morais, Fernando G.; Franco, Marco A.; Cirino, Glauber; Kuhn, Paulo; Sodré, Giordani; Curado, Leone; Basso, João; Roberto de Paulo, Sérgio; Rodrigues, Thiago

doi:10.1016/j.envres.2024.118516

Cited by 3 publications

(1 citation statement)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The "evaporation paradox" represents a situation in which a decrease in evapotranspiration accompanies global warming [63], which can be explained by the decrease in solar radiation, following the increase in cloud cover and the concentration of aerosols and pollutants in the atmosphere [56,62,66], as well as an increase in relative humidity [67] and a reduction in wind speed [66]. Thus, the tendency to reduce ETo in the southern Amazon and Pantanal regions can be explained by reductions in incident radiation and wind speed (Figure 10), probably caused by changes in concentrations and types of aerosols due to biomass burning as observed in the papers of Palácios et al [68][69][70] who demonstrate that the occurrence of fires in the Amazon and Pantanal areas of Mato Grosso are directly linked to the scattering of solar radiation and consequently to energy balances.…”

Section: Trends Analysismentioning

confidence: 79%

Reference Evapotranspiration in Climate Change Scenarios in Mato Grosso, Brazil

Sabino,

Silva,

Almeida

et al. 2024

Preprint

View full text Add to dashboard Cite

The understanding of spatiotemporal variations in reference evapotranspiration (ETo) and its long-term trends is of paramount importance for water cycle studies, modeling, and water resource management, especially in the context of climate change. Therefore, the primary aim of this study is to critically evaluate the performance of various CMIP5 global climate models in simulating the Penman-Monteith reference evapotranspiration and its associated climate variables (maximum and minimum air temperature, incident solar radiation, relative humidity, and wind speed). This evaluation is based on data from nine climate models and 33 automatic meteorological stations (EMA) in the state of Mato Grosso, spanning the period 2007-2020. The statistical metrics used for evaluation include Bias, root mean square error, and Pearson and Spearman correlation coefficients. The projections of the most accurate model were then used to analyze the spatial and temporal changes and trends in ETo under the RCP 2.6, 4.5, and RCP 8.5 scenarios from 2007 to 2100. The HadGEM2-ES model projections indicate static averages similar to current conditions until the end of the century in the RCP 2.6 scenario. However, in the RCP 4.5 and 8.5 scenarios, there is a continuous increase in ETo, with the most significant increase occurring during the dry period (May to September). The areas of the Amazon biome in the north of Mato Grosso exhibit the largest increases in ETo when comparing the observed (2007-2020) and projected (2020-2100) averages. The trend analysis reveals significant changes in ETo and its variables across the state of Mato Grosso in the RCP 4.5 and 8.5 scenarios. In the RCP 2.6 scenario, significant trends in ETo are observed only in the northern Amazon areas. Despite not being observed in all AWSs, the trend analysis of the observed data demonstrates more intense changes in ETo and the existence of the evapotranspiration paradox with an increase in the Cerrado areas and reductions in the Pantanal and southern Amazon areas.

show abstract

Section: Trends Analysismentioning

confidence: 79%

Reference Evapotranspiration in Climate Change Scenarios in Mato Grosso, Brazil

Sabino,

Silva,

Almeida

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Characterization of the Elemental Composition of Aerosols Emitted in the Dry Season of the Pantanal Wetland, Brazil

Ramos,

Brunelli,

Vicentin

et al. 2024

Atmosphere

View full text Add to dashboard Cite

The Brazilian Pantanal region experiences intense biomass burning during the dry season, releasing large quantities of gasses and particles into the atmosphere, which have serious implications on both the climate system and public health. Understanding the dynamics of these emissions is crucial for mitigating the impact on the ecosystem, its functioning, and potential anthropogenic disturbances. This study focused on analyzing emissions in the northern Pantanal during the 2022 drought. Concentrations of fine particulate matter (PM2.5), black carbon (BC), and 25 chemical elements were measured using gravimetry, reflectance analysis, and X-Ray fluorescence, respectively, from samples collected between August and October 2022. The average concentrations of PM2.5 and BC increased approximately 4-fold and 2.5-fold, respectively, compared to averages from a decade ago. Significant increases were also observed in elements such as sulfur (S), potassium (K), iron (Fe), and silicon (Si). The maximum concentrations were comparable to values typical of the southern Amazon, a region known for high deforestation rates and land use changes. Elemental analysis revealed substantial shifts in concentrations, primarily associated with biomass burning (BB) and soil suspension. Additionally, enrichment factor (Ef) analysis showed that lead (Pb) levels, correlated with human activities, were 200 times higher than those found under clean atmospheric conditions.

show abstract

Reference Evapotranspiration in Climate Change Scenarios in Mato Grosso, Brazil

Sabino,

da Silva,

de Almeida

et al. 2024

Hydrology

View full text Add to dashboard Cite

Our understanding of spatiotemporal variability in reference evapotranspiration (ETo) and its long-term trends is of paramount importance for water cycle studies, modeling, and water resource management, especially in the context of climate change. Therefore, the primary aim of this study is to critically evaluate the performance of various CMIP5 global climate models in simulating the Penman–Monteith reference evapotranspiration and its associated climate variables (maximum and minimum air temperature, incident solar radiation, relative humidity, and wind speed). This evaluation is based on data from nine climate models and 33 automatic meteorological stations (AWSs) in the state of Mato Grosso, spanning the period 2007–2020, within the areas of the biomes Amazon and Cerrado and around the Pantanal biome. The statistical metrics used for evaluation include bias, root mean square error, and Pearson and Spearman correlation coefficients. The projections of the most accurate model were then used to analyze the spatial and temporal changes and trends in ETo under the Representative Concentration Pathways (RCPs) of 2.6, 4.5, and 8.5 scenarios from 2007 to 2100. The HadGEM2-ES model projections indicate static averages similar to current conditions until the end of the century in the RCP 2.6 scenario. However, in the RCP 4.5 and 8.5 scenarios, there is a continuous increase in ETo, with the most significant increase occurring during the dry period (May to September). The areas of the Amazon biome in the north of Mato Grosso exhibit the largest increases in ETo when comparing the observed (2007–2020) and projected (2020–2100) averages. The trend analysis reveals significant changes in ETo and its variables across the state of Mato Grosso in the RCP 4.5 and 8.5 scenarios. In the RCP 2.6 scenario, significant trends in ETo are observed only in the northern Amazon areas. Despite not being observed in all AWSs, the trend analysis of the observed data demonstrates more intense changes in ETo and the existence of the evapotranspiration paradox, with an increase in the Cerrado areas and reductions in the Pantanal and southern Amazon areas.

show abstract

ENSO effects on the relationship between aerosols and evapotranspiration in the south of the Amazon biome

Cited by 3 publications

References 60 publications

Reference Evapotranspiration in Climate Change Scenarios in Mato Grosso, Brazil

Reference Evapotranspiration in Climate Change Scenarios in Mato Grosso, Brazil

Characterization of the Elemental Composition of Aerosols Emitted in the Dry Season of the Pantanal Wetland, Brazil

Reference Evapotranspiration in Climate Change Scenarios in Mato Grosso, Brazil

Contact Info

Product

Resources

About