Tropospheric Aerosol - Formation, Transformation, Fate and Impacts

Faraday Discussion 165
Erscheinungsjahr 2014
ISBN: 978-1-84973-692-3
Verlag: RSC Publishing

Buch, Englisch, 572 Seiten, Format (B × H): 164 mm x 237 mm, Gewicht: 1007 g

This volume focuses on the synthesis of emerging knowledge of the atmospheric aerosol systems, assessment of the validity and usefulness of existing frameworks, and the development of robust aerosol system descriptions on scales ranging from the interpretation of laboratory data to assessment of global impacts.

Suspended particulate material in the atmosphere gives rise to a number of poorly determined problems of major current concern. Direct and indirect radiative forcing (the ability of aerosol particles to affect the Earth’s radiation budget) each carries larger uncertainties than all other agents of climate change. Furthermore, there are significant challenges associated with the uncertainties of the impacts of particulate material on air quality and human health.

A significant contributor to these uncertainties is the vast heterogeneity in the distribution of aerosols by virtue of their disparate sources (both primary and secondary) and transformations in the moist oxidising atmosphere. The complexity of aerosol precursors and variability in the oxidising environment leads to a highly variable loading of particles of widely ranging size, age and property.

The topics covered in this volume include:

• Formation,

• Transformation,

• Fate, and

• Impacts of tropospheric aerosols.

Fachgebiete

• Naturwissenschaften Chemie Analytische Chemie Umweltchemie, Lebensmittelchemie
• Naturwissenschaften Physik Angewandte Physik Geophysik
• Geowissenschaften Geologie Meteorologie, Klimatologie
• Geowissenschaften Geologie Geophysik
• Naturwissenschaften Physik Angewandte Physik Umweltphysik
• Geowissenschaften Geologie Geochemie

Inhaltsverzeichnis

- Introductory lecture: Atmospheric organic aerosols: insights from the combination of measurements and chemical transport models

- Quantitative and time-resolved nanoparticle composition measurements during new particle formation

- Regional and global impacts of Criegee intermediates on atmospheric sulphuric acid concentrations and first steps of aerosol formation

- Comparing simulated and experimental molecular cluster distributions

- How do organic vapors contribute to new-particle formation?

- Modeling the influence of alkane molecular structure on secondary organic aerosol formation

- Organic aerosol formation photo-enhanced by the formation of secondary photosensitizers in aerosols

- Halogen-induced organic aerosol (XOA): a study on ultra-fine particle formation and time-resolved chemical characterization

- General discussion

- Average chemical properties and potential formation pathways of highly oxidized organic aerosol

- Atmospheric aerosols in Amazonia and land use change: from natural biogenic to biomass burning conditions

- Sulfate radical-initiated formation of isoprene-derived organosulfates in atmospheric aerosols

- Formation of secondary organic aerosol marker compounds from the photooxidation of isoprene and isoprene-derived alkene diols under low-NOx conditions

- Including phase separation in a unified model to calculate partitioning of vapours to mixed inorganic–organic aerosol particles

- Morphologies of mixed organic/inorganic/aqueous aerosol droplets

- General discussion

- Fluorescent lifetime imaging of atmospheric aerosols: a direct probe of aerosol viscosity

- Aqueous aerosol SOA formation: impact on aerosol physical properties

- The effects of aircraft on climate and pollution. Part II: 20-year impacts of exhaust from all commercial aircraft worldwide treated individually at the subgrid scale

- Contact freezing efficiency of mineral dust aerosols studied in an electrodynamic balance: quantitative size and temperature dependence for illite particles

- Kinetic limitations in gas-particle reactions arising from slow diffusion in secondary organic aerosol

- Tropospheric aerosol as a reactive intermediate

- General discussion

- Online and offline mass spectrometric study of the impact of oxidation and ageing on glyoxal chemistry and uptake onto ammonium sulfate aerosols

- Brown carbon formation from ketoaldehydes of biogenic monoterpenes

- The magnitude and sources of uncertainty in global aerosol

- A water activity based model of heterogeneous ice nucleation kinetics for freezing of water and aqueous solution droplets

- General discussion

- Concluding remarks: challenges for aerosols and climate

Über Autor(innen)

Faraday Discussions documents a long-established series of Faraday Discussion meetings which provide a unique international forum for the exchange of views and newly acquired results in developing areas of physical chemistry, biophysical chemistry and chemical physics. The papers presented are published in the Faraday Discussion volume together with a record of the discussion contributions made at the meeting. Faraday Discussions therefore provide an important record of current international knowledge and views in the field concerned. The latest (2012) impact factor of Faraday Discussions is 3.82.