Modeling the Black and Brown Carbon Absorption and Their Radiative Impact: The June 2023 Intense Canadian Boreal Wildfires Case Study DOI Creative Commons
Paolo Tuccella, Ludovico Di Antonio, Andrea Di Muzio

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(7)

Published: March 29, 2025

Abstract Black carbon (BC) and brown (BrC) are light‐absorbing aerosols with significant climate impacts, but their absorption properties direct radiative effect (DRE) remain uncertain. We simulated BC BrC during the intense Canadian boreal wildfires in June 2023 using an enhanced version of CHIMERE chemical transport model. The study focused on a domain extending from North America to Eastern Europe, including Arctic up 85°N. model includes update treatment for enhancement aging scheme accounting browning blanching through oxidation. Validation against Aerosol Robotic Network satellite data showed accurately reproduced aerosol optical depth (AOD) at multiple wavelengths, both near wildfire sources transoceanic Europe. Improvements were observed simulations absorbing AOD (absorbing optical) compared baseline Significant enhancements achieved capturing spatial distribution areas affected by emissions. For 2023, regional all‐sky DRE attributed was reduced −2.1 W/m 2 control −1.9 This corresponded additional warming +0.2 (+10%) due advanced absorption. These results indicate importance accurate modeling predictions, large‐scale biomass burning events. They also highlight potential overestimations cooling effects traditional models, emphasizing need improved parameterization better simulate evaluating impacts mitigation strategies.

Language: Английский

Modeling the Black and Brown Carbon Absorption and Their Radiative Impact: The June 2023 Intense Canadian Boreal Wildfires Case Study DOI Creative Commons
Paolo Tuccella, Ludovico Di Antonio, Andrea Di Muzio

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(7)

Published: March 29, 2025

Abstract Black carbon (BC) and brown (BrC) are light‐absorbing aerosols with significant climate impacts, but their absorption properties direct radiative effect (DRE) remain uncertain. We simulated BC BrC during the intense Canadian boreal wildfires in June 2023 using an enhanced version of CHIMERE chemical transport model. The study focused on a domain extending from North America to Eastern Europe, including Arctic up 85°N. model includes update treatment for enhancement aging scheme accounting browning blanching through oxidation. Validation against Aerosol Robotic Network satellite data showed accurately reproduced aerosol optical depth (AOD) at multiple wavelengths, both near wildfire sources transoceanic Europe. Improvements were observed simulations absorbing AOD (absorbing optical) compared baseline Significant enhancements achieved capturing spatial distribution areas affected by emissions. For 2023, regional all‐sky DRE attributed was reduced −2.1 W/m 2 control −1.9 This corresponded additional warming +0.2 (+10%) due advanced absorption. These results indicate importance accurate modeling predictions, large‐scale biomass burning events. They also highlight potential overestimations cooling effects traditional models, emphasizing need improved parameterization better simulate evaluating impacts mitigation strategies.

Language: Английский

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