M. Buhr et al., TRACE GAS AND AEROSOL MEASUREMENTS USING AIRCRAFT DATA FROM THE NORTH-ATLANTIC REGIONAL EXPERIMENT (NARE 1993), JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 101(D22), 1996, pp. 29013-29027
Measurements of the concentrations of O-3, CO, NO, NOy, condensation n
uclei, and aerosols in 12 size bins ranging from 0.1 to 3.1 mu m as we
ll as a variety of meteorological parameters were collected aboard the
NCAR King Air in August 1993 during 16 flights over or near the Gulf
of Maine. The purpose of this measurement campaign was to describe the
sources and variation of ozone and its precursors in the western NARE
region during the summer season. Correlations between O-3 and CO, O-3
and NOy, and other chemical and aerosol measurements are examined. Se
veral features in the altitude profiles are investigated using princip
al component analysis, The results of the trace gas analyses indicate
that anthropogenically influenced ozone production dominated ozone thr
oughout the experimental region at altitudes below 1500 m. Other facto
rs identified include a distinct signature from fresh emissions below
1500 m. Above 1500 m the sources of ozone were determined by transport
from a variety of sources.