Meteorological analysis of a 1995 NARSTO-Northeast ozone episode
- Earth Tech, Concord, MA (United States)
An analysis of the meteorological processes and transport characteristics for a five-day episode during the 1995 NARSTO-Northeast measurements program is presented. The field program included extensive meteorological measurements to characterize winds and temperatures aloft during selected intensive measurement periods, as well as enhanced air quality measurements to characterize ozone and precursor concentrations at ground level and aloft. Both rawinsonde and radar profiler/RASS systems were used to acquire meteorological measurements aloft, to supplement routine National Weather Service measurements. In the Northeast Corridor, peak ozone episodes are often associated with large, stagnating high pressure systems, characterized by high temperatures, light winds and limited vertical mixing, often with prevailing west to southwest winds. These conditions are also favorable for sea breeze circulation on the vicinity of the coastline. The CALMET diagnostic meteorological model was used to provide an objective analysis of wind and temperature fields, mixing heights and transport conditions for the July 11--15 ozone episode, which represents the longest episode and the highest observed peak ozone concentrations encountered during the summer 1995 measurements program. Back-trajectories depicting transport conditions based on surface-level and elevated winds are presented for selected receptors on the day with maximum observed concentrations.
- OSTI ID:
- 351016
- Report Number(s):
- CONF-970677--
- Country of Publication:
- United States
- Language:
- English
Similar Records
The 1997 Southern California ozone study-NARSTO: Upper-air meteorological sampling network
Analysis of data from the 1995 NARSTO-Northeast study: Volume 5 -- Three-dimensional analysis of aircraft and upper-air meteorological data. Final report