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Results from a new linear O3 scheme with embedded heterogeneous chemistry compared with the parent full-chemistry 3-D CTM
a new linear O3 scheme embedded heterogeneous chemistry the parent full-chemistry 3-D CTM
2011/2/25
A detailed full-chemistry 3-D chemistry and transport model (CTM) is used to evaluate the current stratospheric O3 parameterisation in the European Centre for Medium-Range Weather Forecasts (ECMWF) mo...
Evidence for heterogeneous chlorine activation in the tropical UTLS
heterogeneous chlorine the tropical UTLS
2011/1/19
Airborne in-situ observations of ClO in the tropics were made during the TROCCINOX (Aracatuba, Brazil, February 2005) and SCOUT-O3 (Darwin, Australia, November/December 2005) field campaigns. While du...
Heterogeneous reactions of carbonyl sulfide on mineral oxides: mechanism and kinetics study
carbonyl sulfide mineral oxides mechanism and kinetics study
2010/11/29
The heterogeneous reactions of carbonyl sulfide (OCS) on the typical mineral oxides in the mineral dust particles were investigated using a Knudsen cell flow reactor and a diffuse reflectance UV-vis s...
Evaluated kinetic and photochemical data for atmospheric chemistry: Volume V – heterogeneous reactions on solid substrates
kinetic and photochemical data atmospheric chemistry heterogeneous reactions solid substrates
2010/10/11
This article, the fifth in the ACP journal series, presents data evaluated by the IUPAC Subcommittee on Gas Kinetic Data Evaluation for Atmospheric Chemistry. It covers the heterogeneous processes on ...
High variability of the heterogeneous ice nucleation potential of oxalic acid dihydrate and sodium oxalate
the heterogeneous ice nucleation oxalic acid dihydrate sodium oxalate
2010/8/25
The heterogeneous ice nucleation potential of airborne oxalic acid dihydrate and sodium oxalate particles in the deposition and condensation mode has been investigated by controlled expansion cooling ...
Heterogeneous chemistry of monocarboxylic acids on α-Al2O3 at different relative humidities
Heterogeneous chemistry monocarboxylic acids α-Al2O3
2010/8/25
A study of the atmospheric heterogeneous reactions of formic acid, acetic acid, and propionic acid on α-Al2O3 was performed at ambient condition by using a diffuse reflectance infrared Fourier transfo...
Heterogeneous uptake of gaseous hydrogen peroxide by Gobi and Saharan dust aerosols: a potential missing sink for H2O2 in the troposphere
gaseous hydrogen peroxide Gobi and Saharan dust aerosols H2O2 the troposphere
2010/8/16
The first direct laboratory measurements of gaseous hydrogen peroxide uptake by authentic Gobi and Saharan dust aerosol particles as a function of relative humidity (RH) have been carried out in an en...
Chemical evolution of secondary organic aerosol from OH-initiated heterogeneous oxidation
Chemical evolution secondary organic aerosol OH-initiated heterogeneous oxidation
2010/8/13
The heterogeneous oxidation of laboratory Secondary Organic Aerosol (SOA) particles by OH radicals was investigated. SOA particles, produced by reaction of α-pinene and O3, were exposed to OH radicals...
Heterogeneous freezing of droplets with immersed mineral dust particles – measurements and parameterization
droplets immersed mineral dust particles measurements parameterization
2010/8/12
During the measurement campaign FROST (FReezing Of duST), LACIS (Leipzig Aerosol Cloud Interaction Simulator) was used to investigate the immersion freezing behavior of size selected, coated and uncoa...
An aerosol chamber investigation of the heterogeneous ice nucleating potential of refractory nanoparticles
aerosol chamber heterogeneous ice nucleating potential refractory nanoparticles
2010/2/21
All samples were observed to initiate ice formation via the deposition mode at threshold ice super-saturations (RHithresh) ranging from 105% to 140% for temperatures below 220 K. Approximately 10% of ...
Heterogeneous ozonation kinetics of 4-phenoxyphenol in the presence of photosensitizer
Heterogeneous ozonation kinetics 4-phenoxyphenol photosensitizer
2010/2/21
At the mixing ratio of 60 ppb which corresponds to strongly polluted ozone areas, the first order of decay of 4-phenoxyphenol is k1=9.95×10−6 s−1. At a very high ozone mixing ratio of 6 pp...
Kinetics and mechanisms of heterogeneous reaction of NO2 on CaCO3 surfaces under dry and wet conditions
heterogeneous reaction CaCO3 surfaces dry wet
2010/2/1
With increasing NO2 concentration in the troposphere, the importance of NO2 reaction with mineral dust in the atmosphere needs to be evaluated. Until now, little is known about the reaction of NO2 wit...
Observations of heterogeneous reactions between Asian pollution and mineral dust over the Eastern North Pacific during INTEX-B
heterogeneous reactions Asian pollution mineral dust Eastern North Pacific INTEX-B
2009/11/19
In-situ airborne measurements of trace gases, aerosol size distributions, chemistry and optical properties were conducted over Mexico and the Eastern North Pacific during MILAGRO and INTEX-B. Heteroge...
Annual particle flux observations over a heterogeneous urban area
Annual particle flux observations heterogeneous urban area
2009/11/9
Long-term eddy covariance particle number flux measurements for the diameter range 6 nm to 5 μm were performed at the SMEAR III station over an urban area in Helsinki, Finland. The heterogeneity of th...
Detailed heterogeneous chemistry in an urban plume box model: reversible co-adsorption of O3, NO2, and H2O on soot coated with benzo[a]pyrene
Detailed heterogeneous chemistry urban plume box model NO2 H2O
2009/10/9
This study assesses in detail the effects of heterogeneous chemistry on the particle surface and gas-phase composition by modeling the reversible co-adsorption of O3, NO2, and H2O on soot coated with ...