Search
Now showing items 1-10 of 62
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, ...
Observed OH and HO2 in the upper troposphere suggest a major source from convective injection of peroxides
(Wiley-Blackwell, 1997)
ER-2 aircraft observations of OH and HO2 concentrations in the upper troposphere during the NASA/STRAT campaign are interpreted using a photochemical model constrained by local observations of O3, H2O, NO, CO, 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 ...
Photochemistry in biomass burning plumes and implications for tropospheric ozone over the tropical South Atlantic
(Wiley-Blackwell, 1998)
Photochemistry occuring in biomass burning plumes over the tropical south Atlantic is analyzed using data collected during the Transport and Atmospheric Chemistry Near the Equator-Atlantic aircraft expedition conducted ...
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 ...
A persistent imbalance in HO x and NO x photochemistry of the upper troposphere driven by deep tropical convection
(Wiley-Blackwell, 1997)
Convection in the tropics turns over the upper troposphere at rates (0.08 d−1) comparable to photochemical processes controlling the absolute abundance of HOx (OH + HO2) and the abundance of NOx (NO + NO2) relative to HNO3. ...
Ozone and hydrogen peroxide during summer smog episodes over the Swiss Plateau: Measurements and model simulations
(Wiley-Blackwell, 1995)
As part of the POLLUMET (Pollution and Meteorology in Switzerland) study, measurements of O3, NO2, and H2O2 were made at ground stations, by aircraft, and manned hydrogen balloons to characterize the photochemical processes ...
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. ...
Hydrogen peroxide, organic hydroperoxide, and formaldehyde as primary pollutants from biomass burning
(Wiley-Blackwell, 1997)
Hydrogen peroxide, organic hydroperoxide species, and formaldehyde were found to be enhanced within biomass burning plumes during the Transport and Atmospheric Chemistry near the Equator - Atlantic (TRACE A) experiment. ...