Variability and time of day dependence of ozone photochemistry in western wildfire plumes

MA Robinson, ZCJ Decker, KC Barsanti… - Environmental …, 2021 - ACS Publications
Understanding the efficiency and variability of photochemical ozone (O3) production from
western wildfire plumes is important to accurately estimate their influence on North American …

Constraints on instantaneous ozone production rates and regimes during DOMINO derived using in-situ OH reactivity measurements

V Sinha, J Williams, JM Diesch… - Atmospheric …, 2012 - acp.copernicus.org
In this study air masses are characterized in terms of their total OH reactivity which is a
robust measure of the" reactive air pollutant loading". The measurements were performed …

Observationally Constrained Modeling of Peroxy Radical During an Ozone Episode in the Pearl River Delta Region, China

J Wang, Y Zhang, W Zhao, Z Wu, S Luo… - Journal of …, 2023 - Wiley Online Library
Abstract Peroxy radicals (RO2*= HO2+ RO2) play key roles in forming secondary air
pollutants such as ozone, yet model underprediction of RO2* is a challenging radical …

Characterization of ozone production in San Antonio, Texas, using measurements of total peroxy radicals

DC Anderson, J Pavelec, C Daube… - Atmospheric …, 2019 - acp.copernicus.org
Observations of total peroxy radical concentrations ([XO 2]≡[RO 2]+[HO 2]) made by the
Ethane CHemical AMPlifier (ECHAMP) and concomitant observations of additional trace …

Chemical processes related to net ozone tendencies in the free troposphere

H Bozem, TM Butler, MG Lawrence… - Atmospheric …, 2017 - acp.copernicus.org
Ozone (O 3) is an important atmospheric oxidant, a greenhouse gas, and a hazard to human
health and agriculture. Here we describe airborne in situ measurements and model …

Chemical amplification-cavity attenuated phase shift spectroscopy measurements of atmospheric peroxy radicals

EC Wood, JR Charest - Analytical chemistry, 2014 - ACS Publications
We describe a new instrument for the quantification of atmospheric peroxy radicals (HO2,
CH3O2, C2H5O2, etc.) using the chemical amplification method. Peroxy radicals are mixed …

Ethane-based chemical amplification measurement technique for atmospheric peroxy radicals

EC Wood, BL Deming, S Kundu - Environmental Science & …, 2017 - ACS Publications
Peroxy radicals play important roles in the atmospheric oxidation of organic compounds and
the formation of ozone and secondary organic aerosol. There are few peroxy radical …

Peroxy radical measurements by ethane–nitric oxide chemical amplification and laser-induced fluorescence during the IRRONIC field campaign in a forest in Indiana

S Kundu, BL Deming, MM Lew… - Atmospheric …, 2019 - acp.copernicus.org
Peroxy radicals were measured in a mixed deciduous forest atmosphere in Bloomington,
Indiana, USA, during the Indiana Radical, Reactivity and Ozone Production Intercomparison …

Ultra-sensitive measurement of peroxy radicals by chemical amplification broadband cavity-enhanced spectroscopy

Y Chen, C Yang, W Zhao, B Fang, X Xu, Y Gai, X Lin… - Analyst, 2016 - pubs.rsc.org
The PERCA (PEroxy Radical Chemical Amplification) technique, which is based on the
catalytic conversion of ambient peroxy radicals (HO2 and RO2, where R stands for any …

Modelled and measured concentrations of peroxy radicals and nitrate radical in the US Gulf Coast region during TexAQS 2006

R Sommariva, TS Bates, D Bon, DM Brookes… - Journal of atmospheric …, 2011 - Springer
Measurements of total peroxy radicals (HO 2+ RO 2) and nitrate radical (NO 3) were made
on the NOAA research vessel R/V Brown along the US Gulf Coast during the TexAQS 2006 …