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Sources of HO x and production of ozone in the upper troposphere over the United States
(Wiley-Blackwell, 1998)
The sources of HOx (OH+peroxy radicals) and the associated production of ozone at 8–12 km over the United States are examined by modeling observations of OH, HO2, NO, and other species during the SUCCESS aircraft campaign ...
Export of reactive nitrogen from North America during summertime: Sensitivity to hydrocarbon chemistry
(Wiley-Blackwell, 1998)
The global influence on tropospheric chemistry of nitrogen oxides (NOx = NO + NO2) emitted by fossil fuel combustion may be strongly modulated by nonmethane hydrocarbon (NMHC) chemistry taking place in the continental ...
Latitudinal distribution of reactive nitrogen in the free troposphere over the Pacific Ocean in late winter/early spring
(Wiley-Blackwell, 1998)
The late winter/early spring (February/March, 1994) measurements of Pacific Exploratory Mission-West (PEM-W) B have been analyzed to show latitudinal distributions (45°N to 10°S) of the mixing ratios of reactive nitrogen ...
Anthropogenic forcing on tropospheric ozone and OH since preindustrial times
(Wiley-Blackwell, 1998)
A global three-dimensional model of tropospheric chemistry is used to investigate the changes in tropospheric O3 and OH since preindustrial times as a result of fuel combustion and industry, biomass burning, and growth in ...
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 ...
Seasonal budgets of reactive nitrogen species and ozone over the United States, and export fluxes to the global atmosphere
(Wiley-Blackwell, 1998)
A three-dimensional, continental-scale photochemical model is used to investigate seasonal budgets of O3 and NOy species (including NOx and its oxidation products) in the boundary layer over the United States and to estimate ...
Global simulation of tropospheric O3-NOx-hydrocarbon chemistry: 2. Model evaluation and global ozone budget
(Wiley-Blackwell, 1998)
Results from a global three-dimensional model for tropospheric O3-NOx-hydrocarbon chemistry are presented and evaluated with surface, ozonesonde, and aircraft measurements. Seasonal variations and regional distributions ...
Global simulation of tropospheric O 3 -NO x -hydrocarbon chemistry: 3. Origin of tropospheric ozone and effects of nonmethane hydrocarbons
(Wiley-Blackwell, 1998)
A global three-dimensional model of tropospheric O3-NOx-hydrocarbon chemistry is used to investigate the factors controlling ozone concentrations in the troposphere. Model results indicate a close balance between chemical ...
Global simulation of tropospheric O3-NOx-hydrocarbon chemistry: 1. Model formulation
(Wiley-Blackwell, 1998)
We describe a global three-dimensional model for tropospheric O3-NOx-hydrocarbon chemistry with synoptic-scale resolution. A suite of 15 chemical tracers, including O3, NOx, PAN, HNO3, CO, H2O2, and various hydrocarbons, ...
Air-snow exchange of HNO3 and NOy at Summit, Greenland
(Wiley-Blackwell, 1998)
Ice core records of NO3− deposition to polar glaciers could provide unrivaled information on past photochemical status and N cycling dynamics of the troposphere, if the ice core records could be inverted to yield concentrations ...