Chamber Studies of Atmospheric Chemistry

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Quality".

Deadline for manuscript submissions: closed (15 July 2019) | Viewed by 7058

Special Issue Editor


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Guest Editor
Atmospheric Chemistry Observation & Modeling Laboratory (ACOM), National Center for Atmospheric Research (NCAR), Boulder, CO, USA
Interests: atmospheric oxidation mechanisms; aerosol physics and chemistry

Special Issue Information

Dear Colleagues,

Our understanding of atmospheric oxidative chemistry has been derived largely from data obtained in laboratory chambers. The kinetics, products, and mechanisms of gas/particle-phase reactions can be simulated in a laboratory using several types of chambers, including a batch chamber, a continuously mixed flow reactor, and a flow tube. A highlight of chamber studies over the last decade has been the investigation of secondary organic aerosol formation and the evolution from the multi-generational oxidation of volatile organic compounds under different chemical regimes such as highly-polluted urban environments and remote atmospheres. The interpretation of these chamber observations has provided a fundamental basis for predicting the temporal profiles and spatial distributions of atmospheric aerosols in air quality and global climate models.

The aim of this Special Issue is to communicate the most recent advances in simulating atmospheric oxidation chemistry with laboratory chamber facilities. Potential topics for research and review articles include, but are not limited to, design, characterization, and applications of novel chamber facilities; intercomparison studies among different chambers; instrument development for the measurement of gas- and particle-phase species; and fundamental gas-phase kinetics, aqueous-phase and heterogenous reactions, aerosol chemistry, secondary organic aerosol formation pathways, and the development of explicit models for interpreting chamber data.   

Dr. Xuan Zhang
Guest Editor

Manuscript Submission Information

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Keywords

  • laboratory chambers
  • flow tube reactors
  • gas-phase kinetics
  • aqueous-phase chemistry
  • heterogeneous reactions
  • secondary organic aerosol formation

Published Papers (1 paper)

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Review

36 pages, 4263 KiB  
Review
Atmospheric Chemistry in a Box or a Bag
by G. M. Hidy
Atmosphere 2019, 10(7), 401; https://doi.org/10.3390/atmos10070401 - 16 Jul 2019
Cited by 19 | Viewed by 6620
Abstract
Environmental chambers have proven to be essential for atmospheric photochemistry research. This historical perspective summarizes chamber research characterizing smog. Experiments with volatile organic compounds (VOCs)-nitrogen oxides (NOx) have characterized O3 and aerosol chemistry. These led to the creation and evaluation [...] Read more.
Environmental chambers have proven to be essential for atmospheric photochemistry research. This historical perspective summarizes chamber research characterizing smog. Experiments with volatile organic compounds (VOCs)-nitrogen oxides (NOx) have characterized O3 and aerosol chemistry. These led to the creation and evaluation of complex reaction mechanisms adopted for various applications. Gas-phase photochemistry was initiated and developed using chamber studies. Post-1950s study of photochemical aerosols began using smog chambers. Much of the knowledge about the chemistry of secondary organic aerosols (SOA) derives from chamber studies complemented with specially designed atmospheric studies. Two major findings emerge from post-1990s SOA experiments: (1) photochemical SOAs hypothetically involve hydrocarbons and oxygenates with carbon numbers of 2, and (2) SOA evolves via more than one generation of reactions as condensed material exchanges with the vapor phase during “aging”. These elements combine with multiphase chemistry to yield mechanisms for aerosols. Smog chambers, like all simulators, are limited representations of the atmosphere. Translation to the atmosphere is complicated by constraints in reaction times, container interactions, influence of precursor injections, and background species. Interpretation of kinetics requires integration into atmospheric models addressing the combined effects of precursor emissions, surface exchange, hydrometeor interactions, air motion and sunlight. Full article
(This article belongs to the Special Issue Chamber Studies of Atmospheric Chemistry)
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