NARSTO EPA_SS_FRESNO Aethalometer Multi-Wavelength Carbon DataEntry ID: NARSTO_EPA_SS_FRESNO_MULTI_WL_C
Abstract: A multiwavelength aethalometer (Model AE30S) has been operated at the
Fresno supersite from 5/12/1999 to present. The collected aerosol
sample is illuminated with light from seven light emitting diodes at
wavelengths of 370, 470, 520, 590, 660, 880, and 950 nm. Aerosol
samples are collected for five minute periods. The air sample is
collected through a sharp cut size-selective cyclone to limit ... the size
of particles to aerodynamic diameters of 2.5 ?m and less. The
concentration of black carbon corresponds to the 880 nm measurement.
The black carbon equivalents at the other six wavelengths are also
The Fresno Supersite is one of several Supersites that was established in
urban areas within the United States by the U.S. Environmental Protection
Agency (EPA) to better understand the measurement, sources, and health
effects of suspended particulate matter (PM). The site is located at 3425
First St., approximately 1 km north of the downtown commercial district.
First Street is a four-lane artery with moderate traffic
levels. Commercial establishments, office buildings, churches, and
schools are located north and south of the monitor. Medium-density
single-family homes and some apartments are located in the blocks to
the east and west of First Street. The Fresno Supersite began
operation in May of 1999 and continues today.
(Click for Interactive Map)
Start Date: 1999-05-12Stop Date: 2003-07-01
Temporal Resolution: 5 minute
ISO Topic Category
Role: DIF AUTHOR
Email: support-asdc at earthdata.nasa.gov
NASA Langley Atmospheric Science Data Center User and Data Services NASA Langley Research Center Mail Stop 157D
Province or State: VA
Postal Code: 23681-2199
Email: johnw at dri.edu
Email: judyc at dri.edu
Role: TECHNICAL CONTACT
Email: dana.trimble at dri.edu
Watson, J.G.; Chow, J.C. A wintertime PM2.5 episode at the Fresno, CA, supersite; Atmos. Environ. 2002, 36(3), 465-475.
Watson, J.G.; Chow, J.C.; Bowen, J.L.; Lowenthal, D.H.; Hering, S.V.;
Ouchida, P.; Oslund, W. Air quality measurements from the Fresno supersite; JAWMA 2000, 50(8), 1321-1334.
Watson, J.G.; Chow, J.C. Comparison and evaluation of in-situ and filter carbon measurements at the Fresno Supersite; J. Geophys. Res. 2002, 107(D21), ICC 3-1-ICC 3-15, doi:10.1029/2001JD000573.
Watson, J.G.; Chow, J.C.; Hering, S.V.; Fitz, D.R. Final report for
Phase I of Fresno supersite measurements; prepared for Cooperative Institute for Atmospheric Sciences and Terrestrial Applications, Las
Vegas, NV, by Desert Research Institute: Reno, NV, 2002.
Watson, J.G.; Chow, J.C.; Lowenthal, D.H.; Stolzenburg, M.R.; Kreisberg, N.M.; Hering, S.V. Particle size relationships at the Fresno supersite; JAWMA 2002, 52(7), 822-827.
Watson, J.G.; Chow, J.C.; Fitz, D.R. Quality assurance project plan -
Fresno Supersite (Revision 0); prepared for U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Research Triangle Park, NC, by Desert Research Institute: Reno, NV, 2000.
Watson, J.G.; Chow, J.C. Zone of representation for the Fresno, CA
supersite; JAWMA 2002, in preparation.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2003-11-17
Last DIF Revision Date: 2003-11-20