Alexander T. Archibald

Supplementary material to "Reduction and evaluation of a near-explicit dimethyl sulfide and methanethiol oxidation mechanism"

Lorrie Jacob, Yao Ge, Chiara Giorio, Alexander T. Archibald

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Reduction and evaluation of a near-explicit dimethyl sulfide and methanethiol oxidation mechanism

Lorrie Jacob, Yao Ge, Chiara Giorio, Alexander T. Archibald

Abstract. Marine sulfur species play a key role in the Earth system, but simulating their complex oxidation mechanisms is a significant challenge for Earth system models. We have taken a comprehensive gas-phase mechanism of the OH and NO3-initiated oxidation of dimethyl sulfide …

gb (code pays fourni par la source)

Evaluation of UKESM aerosol size and composition using ATom measurements indicates missing marine aerosol formation mechanisms

Xu‐Cheng He, N luke Abraham, Han Ding, M. R. Russo et autres

Abstract. Atmospheric aerosols influence climate through their interactions with radiation and clouds, yet large uncertainties remain in their simulation by global models. This study evaluates the United Kingdom Earth System Model version 1.1 (UKESM1.1) using global-scale aircraft observations from the Atmospheric Tomography …

Determining the key sources of uncertainty in dimethyl sulfide and methanethiol oxidation under tropical, temperate, and polar marine conditions

Lorrie Jacob, Benedict E. H. Harvey, Chiara Giorio, Alexander T. Archibald

This study quantifies how uncertainties in the gas-phase rate constants used in the oxidation mechanisms of dimethyl sulfide (DMS) and methanethiol (CH 3 SH) (both major natural sources of sulfur to the atmosphere), affect products such as methanesulfonic acid and sulfuric acid, …

gb (code pays fourni par la source)

The global hydrogen budget

Zutao Ouyang, Robert B. Jackson, Marielle Saunois, Josep G. Canadell et autres

Hydrogen (H2) will play a part in decarbonizing the global energy system1. However, hydrogen interacts with methane, ozone, and stratospheric water vapour, leading to an indirect 100-year global warming potential of 11 ± 4 (refs. 2–5). This raises concerns about the climate …

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Applications of Machine Learning and Artificial Intelligence in Tropospheric Ozone Research

Sebastian Hickman, Makoto Kelp, Paul T. Griffiths, Kelsey Doerksen et autres

Machine learning (ML) is transforming atmospheric chemistry, offering powerful tools to address challenges in tropospheric ozone research, a critical area for climate resilience and public health. As in adjacent fields, ML approaches complement existing research by learning patterns from ever-increasing volumes of …

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Determining the key sources of uncertainty in dimethyl sulfide and methanethiol oxidation under tropical, temperate, and polar marine conditions

Lorrie Jacob, Ben Harvey, Chiara Giorio, Alexander T. Archibald

Abstract. This study quantifies how uncertainties in the gas-phase rate constants used in the oxidation mechanisms of dimethyl sulfide (DMS) and methanethiol (CH3SH) (both major natural sources of sulfur to the atmosphere), affect products such as methanesulfonic acid and sulfuric acid, which …

gb (code pays fourni par la source)

Supplementary material to "Determining the key sources of uncertainty in dimethyl sulfide and methanethiol oxidation under tropical, temperate, and polar marine conditions"

Lorrie Jacob, Chiara Giorio, Alexander T. Archibald

S1 Addition of aqueous, halogen and methanethiol chemistryTo explore the effect of halogens, the reactions of DMS, DMSO, and SO with BrO have been included based on the recommended rate constants from the 2019 NASA panel report.The reactions of DMS with Cl …

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Moderate Climate Overshoots Trigger Hysteresis in Arctic Sea Ice

Alexander T. Archibald, Selena Zhang, Nathan Luke Abraham, Yongming Tang et autres

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Introducing Volatile Organic Compound Model Intercomparison Project (VOCMIP)

Gunnar Myhre, Øivind Hodnebrog, Srinath Krishnan, Maria Sand et autres

Abstract. Volatile organic compounds (VOCs) play an important role in atmospheric chemistry, influencing the cycling of peroxy and hydroxyl radicals, the formation of tropospheric ozone, hydrogen, secondary organic aerosol, and the lifetime of methane and other greenhouse gases. Their interactions shape overall …

no, be, us, gb, fr, de, nl (code pays fourni par la source)

Evaluation of UKESM aerosol size and composition using ATom measurements indicates missing marine aerosol formation mechanisms

Xu‐Cheng He, Nathan Luke Abraham, Hanming Ding, M. R. Russo et autres

Abstract. Atmospheric aerosols influence climate through their interactions with radiation and clouds, yet large uncertainties remain in their simulation by global models. This study evaluates the United Kingdom Earth System Model version 1.1 (UKESM1.1) using global-scale aircraft observations from the. Atmospheric Tomography …

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Opinion: The role of AerChemMIP in advancing climate and air quality research

Paul T. Griffiths, Laura J. Wilcox, Robert J. Allen, Vaishali Naïk et autres

The Aerosol Chemistry Model Intercomparison Project (AerChemMIP) was endorsed by the Coupled Model Intercomparison Project 6 (CMIP6) and was designed to quantify the climate and air quality impacts of aerosols and chemically reactive gases. AerChemMIP provided the first consistent calculation of effective …

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