ASDC | NARSTO_EPA_SS_FRESNO_AETHALOM_MULTI_WL_CARBON

NARSTO Level 2

Entry Title: NARSTO EPA Supersite (SS) Fresno, Aethalometer Multi-Wavelength Carbon Data

Entry ID: NARSTO_EPA_SS_FRESNO_AETHALOM_MULTI_WL_CARBON_1

Aerosols

Description

NARSTO_EPA_SS_FRESNO_AETHALOM_MULTI_WL_CARBON is the North American Research Strategy for Tropospheric Ozone (NARSTO) Environmental Protection Agency (EPA) Supersite (SS) Fresno, Aethalometer Multi-Wavelength Carbon Data product. This data was obtained between May 1999 and December 2006 at the Fresno supersite. A multiwavelength aethalometer (Model AE30S) operated at the Fresno supersite from May 12, 1999 to December 31, 2006. The collected aerosol sample was illuminated with light from seven light emitting diodes at wavelengths of 370, 470, 520, 590, 660, 880, and 950 nm. Aerosol samples were collected for five minute periods. The air sample was collected through a sharp cut size-selective cyclone to limit the size of particles to aerodynamic diameters of 2.5 um and less. The concentration of black carbon corresponded to the 880 nm measurement. The black carbon equivalents at the other six wavelengths were also determined.

The Fresno Supersite is one of several Supersites established in urban areas within the United States by the EPA to better understand the measurement, sources, and health effects of suspended particulate matter (PM). The site is located at 3425 First Street, approximately 1 km north of the downtown commercial district. First Street was a four-lane artery with moderate traffic levels. Commercial establishments, office buildings, churches, and schools were located north and south of the monitor. Medium-density single-family homes and some apartments were located in the blocks to the east and west of First Street. The Fresno Supersite began operation in May of 1999.The EPA PM Supersites Program was an ambient air monitoring research program designed to provide information of value to the atmospheric sciences, and human health and exposure research communities.

Eight geographically diverse projects were chosen to specifically address the following EPA research priorities: (1) to characterize PM, its constituents, precursors, co-pollutants, atmospheric transport, and its source categories that affect the PM in any region; (2) to address the research questions and scientific uncertainties about PM source-receptor and exposure-health effects relationships; and (3) to compare and evaluate different methods of characterizing PM including testing new and emerging measurement methods.

NARSTO, which has since disbanded, was a public/private partnership, whose membership spanned across government, utilities, industry, and academe throughout Mexico, the United States, and Canada. The primary mission was to coordinate and enhance policy-relevant scientific research and assessment of tropospheric pollution behavior; activities provide input for science-based decision-making and determination of workable, efficient, and effective strategies for local and regional air-pollution management. Data products from local, regional, and international monitoring and research programs are still available.

DOI

10.5067/ASDCDAAC/NARSTO/0053

Citation Styles for this Dataset

Resources and Documentation

Earthdata Forum

PROJECT HOME PAGE

NARSTO Quality Systems Program Science Systems Legacy Page

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DATA CITATION POLICY

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GENERAL DOCUMENTATION

ASDC Data and Information for NARSTO

PRODUCT USAGE

Guide for NARSTO EPA_SS_FRESNO Aethalometer Multi-Wavelength Carbon Data

PUBLICATIONS

Fresno Supersite Final Report - March 31, 2005

SCIENCE DATA PRODUCT VALIDATION

From GCMD Science Keywords:

AEROSOLS
CARBONACEOUS AEROSOLS

Black Carbon
Carbonaceous Aerosols

Data Distribution

File Format(s):

ASCII

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Spatial Information

Spatial Coverage: (S: 36.78, N: 36.78), (W: -119.77, E: -119.77)
Spatial Coverage Type: Horizontal
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

FRESNO

Temporal Information

Temporal Coverage: 1999-05-12 - 2007-01-01

Platforms

Permanent Land Sites

GROUND STATIONS

AETHALOMETER

Metadata Dates

Created on 2003-11-17

Last updated on 2024-09-04