Now showing items 1-10 of 131
Field study of the emissions of methyl chloride and other halocarbons from biomass burning in Western Africa
(Springer Netherlands, 1995)
A field study of trace gas emissions from biomass burning in Equatorial Africa gave methyl chloride emission ratios of 4.3×10–5±0.8×10–5 mol CH3Cl/mol CO2. Based on the global emission rates for CO2 from biomass burning ...
Atmospheric Concentrations and Temporal Variations of C1-C3 Carbonyl Compounds at Two Rural Sites in Central Ontario
Measurements of formaldehyde, acetaldehyde, acetone and propionaldehyde concentrations were made at two rural sites in central Ontario. One site (at Egbert, Ont.) is located ≈60 km northwest of Toronto, while the other ...
An Intercomparison of Airborne Nitric Acid Measurements During CITE-2
Results from an airborne intercomparison of techniques to measure tropospheric levels of nitric acid are discussed. The intercomparison was part of the National Aeronautics and Space Administration’s Global Tropospheric ...
Interlaboratory calibration of peroxyacetyl nitrate liquid standards
A Case Study of Ozone Production in a Rural Area of Central Ontario
An O3 episode observed at Dorset, a rural site in central Ontario, during a stagnant high pressure period of the intensive Eulerian Model Evaluation Field Study (EMEFS), in the summer of 1988, is simulated using a photochemical ...
The IGBP/IGAC SAFARI-92 field experiment: Background and overview
The International Geosphere-Biosphere Programme/International Global Atmospheric Chemistry (IGBP/IGAC) Southern Africa Fire-Atmosphere Research Initiative (SAFARI-92) field experiment was conducted in the 1992 dry season ...
The Southern Ontario Oxidant Study (SONTOS): Overview and Case Studies for 1992
The southern Ontario oxidant study (SONTOS) is one of the scientific responses to the problem of ozone exceedences in the Windsor/Quebec City corridor, the strip extending from Windsor in the extreme southwest of Ontario, ...
The reaction probability of N2O5 with sulphuric acid aerosols at stratospheric temperatures and compositions
We have measured the rate of reaction of N2O5 with H2O on monodisperse, submicrometer H2SO4 particles in a low‐temperature flow reactor. Measurements were carried out at temperatures between 225 K and 293 K on aerosol ...
Halogen atom concentrations in the Arctic troposphere derived from hydrocarbon measurements: Impact on the budget of formaldehyde
As part of the Polar Sunrise Experiment in 1998 measurements of hydrocarbons were made at the Canadian Arctic station Alert. Halogen atom concentrations play a key role in determining formaldehyde mixing ratios. Formaldehyde ...