Albuquerque Community Air Toxics Project
Ilias Kavouras, Dave DuBois, George Nikolich, Vic Etyemezian
Desert Research Institute, Las Vegas, NV
City of Albuquerque, Air Quality Division, Albuquerque, NM
Sponsor: US EPA
The study is part of the Community Air Toxics Monitoring Program in which 24-hour
concentrations of HAPs are measured in a 1-in-6 day schedule at three sites in
Albuquerque, New Mexico. The
goal of this effort is to determine the health risk associated with exposures to
air toxics in the City of Albuquerque. The specific objectives are:
1. identify the temporal variation of VOCs within specific community settings
and geographic and demographic regions in the city of Albuquerque;
2. determine the vertical profile of VOCs;
3. understand the local air circulation and evaluate the contribution of
4. identify and evaluate the impact of local HAPs sources;
5. quantify the relative contributions from local sources and long-range
transport to HAPs;
6. determine the impact of meteorological conditions on diurnal, daily, and
seasonal time scales;
7. assess adverse health impacts from exposure using risk assessment models.
Upon completion of the study, a detailed dataset will provide important
information on to what extend exposures to air toxics can pose acute or
long-term health risks and if action is required.
To help with objective 6, we employed several techniques to obtain
and analyze meteorological data useful for this project.
Profiling with a Tethered Balloon
We used our Vaisala DigiCora Tethersonde system, consisting of a meteorological
sensor package suspended below a tethered helium-filled balloon. In one
configuration we used a 9-cubic meter balloon that provided lift to raise instruments up to maximum
height of 450 meters above ground level. The system gave us a detailed profile
of the atmospheric boundary layer at high time resolution. The tetherline was controlled by a winch to raise or lower the instruments as they collect
continuous vertical measurements of wind speed and direction, temperature,
and relative humidity.
Vertical aerosol profiling
We also used our Vaisala ceilometer (CL31) to collect aerosol vertical profiles
via backscatter during the summer study. This was collocated with our tethered balloon soundings
for comparison with meteorological parameters during a few days.
Vertical profiling with a tram
We took advantage of the Sandia Peak Tramway get soundings of temperature,
relative humidity, VOCs, and light scattering during the study.
Wind field modeling with CALMET
The CALMET meteorological model is being used to map boundary layer meteorology
during the intensive monitoring periods.
last modified 2 January 2009
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