Results 141 to 150 of about 162,471 (236)

Vertical Redistribution of Ozone Precursor Proxies During Typhoon Peripheral Periods: Insights From MAX‐DOAS and GEOS‐Chem

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Typhoon peripheral conditions modulate the formation and atmospheric fate of ozone precursors, yet the vertical distribution and the underlying physical‐chemical drivers remain less constrained. Here, we examine the vertical profiles of ozone precursor proxies, including formaldehyde (HCHO), glyoxal (CHOCHO), and nitrogen dioxide (NO2), in the
Xicheng Li   +15 more
wiley   +1 more source

The Role of Lightning in Atmospheric Chemistry

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Lightning has important effects on atmospheric constituents in primarily the middle and upper troposphere. We summarize the effects of lightning on atmospheric chemistry that have been published since the last major review in 2007. The estimates of NOx production by lightning (LNOx) are based on five methods: theoretical/laboratory estimates ...
Kenneth E. Pickering   +2 more
wiley   +1 more source

NOx and HCHO in Hot Extremes Observed From Space and Their Influences on Urban Populations: A Case Study in Houston, TX (USA)

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 16, 28 August 2026.
Abstract Hot extremes have increased globally and on a regional scale. Traditional data processing methods to understand air quality changes in hot extremes may not adequately describe variations in directly emitted air pollutants like nitrogen oxides (NOx) or volatile organic compounds (VOCs) and their influence on secondary species such as ozone (O3).
Tabitha Lee   +2 more
wiley   +1 more source

Model Sensitivities of Biomass‐Burning Aerosol Chemical Aging, Sulfate Formation, and Cloud Droplet Activation in the Southeastern Atlantic Using CESM and E3SM

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Biomass‐burning smoke drives large uncertainty in climate projections of the Earth's radiative balance. This is due to the chemical and physical evolution of smoke and its impact on clouds and radiation. Here we focus on the southeastern Atlantic region and its inflow of African biomass‐burning smoke during August 2017.
Calvin Howes   +10 more
wiley   +1 more source

Effect of bromine and iodine chemistry on tropospheric ozone over Asia-Pacific using the CMAQ model. [PDF]

open access: yesChemosphere, 2021
Huang Y   +7 more
europepmc   +1 more source

Global tropospheric ozone dynamics: Part II: Numerical modelling of tropospheric ozone variability: Part I: Tropospheric ozone precursors

open access: yes, 2001
Part I: An overview of the tropospheric ozone changes is presented focussing mainly on the tropospheric ozone precursors. The complexity of the problem is shown through the consideration of a great number of relevant substances, like nitrogen compounds, volatile organic compounds, peroxyacetyl nitrate, hydroxyl radical, carbon monoxide, alkyl nitrates.
Kondratyev, K.Ya., Varotsos, C.A.
openaire   +2 more sources

A Deep Learning Model of Lightning Stroke Density

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 15, 16 August 2026.
Abstract Lightning plays a crucial role in the Earth's climate system; however, existing parameterizations for use in forecasting and earth system models show room for improvement in capturing spatial and temporal variations in its frequency. This study develops deep learning‐based parameterizations of lightning stroke density using meteorological ...
Randall Jones II   +3 more
wiley   +1 more source

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