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Reactive nitrogen oxides and ozone above a taiga woodland
(Wiley-Blackwell, 1994)
Measurements of reactive nitrogen oxides (NOₓ and NO{sub y}) and ozone (O₃) were made in the planetary boundary layer (PBL) above a taiga woodland in northern Quebec, Canada, during June-August, 1990, as part of NASA Arctic ...
Concentrations and snow-atmosphere fluxes of reactive nitrogen at Summit, Greenland
(Wiley-Blackwell, 1999)
Concentrations and fluxes of NOy (total reactive nitrogen), ozone concentrations and fluxes of sensible heat, water vapor, and momentum were measured from May 1 to July 20, 1995 at Summit, Greenland. Median NOy concentrations ...
Carboxylic acids in clouds at a high-elevation forested site in central Virginia
(Wiley-Blackwell, 1995)
During September 1990 we sampled coarse (>18-μm diameter) and fine (18- to 5.5-μm diameter) droplets and liquid-water content (LWC) in cloud from a tower on a forested ridge top in Shenandoah National Park, Virginia. ...
Carboxylic acids in the rural continental atmosphere over the eastern United States during the Shenandoah Cloud and Photochemistry Experiment
(Wiley-Blackwell, 1995)
The Shenandoah Cloud and Photochemistry Experiment (SCAPE) was conducted during September 1990 in the rural continental atmosphere at a mountain top site (1014 m) in Shenandoah National Park, Virginia. We report here the ...
Shenandoah Cloud and Photochemistry Experiment (SCAPE): Overview
(Wiley-Blackwell, 1995)
The Shenandoah Cloud and Photochemistry Experiment (SCAPE) investigated the chemistry of the atmosphere at a high-elevation forested site in central Virginia with particular focus on the factors controlling concentrations ...
Seasonal variation of the ozone production efficiency per unit NOx at Harvard Forest, Massachusetts
(Wiley-Blackwell, 1996)
Weekly values of the net O3 production efficiency (OPE), defined as the net number of O3 molecules produced per molecule of NOx (NO + NO2) consumed, are estimated from a 1990–1994 record of O3, NOx, NOy, CO, and C2H2 ...
Relationship of ozone and carbon monoxide over North America
(Wiley-Blackwell, 1994)
Observations at sites in eastern North America show a strong correlation between O3 and CO concentrations in summer, with a consistent slope ΔO3/ΔCO ≈ 0.3. Observations in the aged Denver plume at Niwot Ridge, Colorado, ...
Formaldehyde, glyoxal, and methylglyoxal in air and cloudwater at a rural mountain site in central Virginia
(Wiley-Blackwell, 1995)
As part of the Shenandoah Cloud and Photochemistry Experiment (SCAPE), we measured formaldehyde (HCHO), glyoxal (CHOCHO), and methylglyoxal (CH3C(O)CHO) concentrations in air and cloudwater at Pinnacles (elevation 1037 m) ...
Seasonal transition from NO x - to hydrocarbon-limited conditions for ozone production over the eastern United States in September
(Wiley-Blackwell, 1995)
Concentrations of O3, CO, NO, total reactive nitrogen oxides (NOy), H2O2, and HCHO were measured from September 4 to October 1, 1990, at a mountain ridge site in Shenandoah National Park, Virginia. The data show evidence ...
Harvard Forest regional-scale air mass composition by Patterns in Atmospheric Transport History (PATH)
(Wiley-Blackwell, 1998)
We calculated 4 years (1990–1993) of back trajectories arriving at Harvard Forest and used them to define patterns in atmospheric transport history. This information was used to assess the degree to which regional-scale ...