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NARSTO EPA Supersite in LA PM2.5-10 Composition and Mass Data

Entry ID: NARSTO_EPA_SS_LOS_ANGELES_PARTISOL_DATA

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Summary

Abstract: Data are available for samples collected using Partisol Model 2025-D samplers between late 2000 and late 2003 variously from sites at Downey, Claremont, Riverside, Rubidoux, and the University of Southern California (USC). Samples were collected episodically, frequently for a 24-hour per period, but in some cases multiple samples were collected over the course of a day. Element/metals, ... nitrate/sulfate ion, and mass concentration data were obtained.

The Partisol is a dichotomous sequential multi-filter air sampler. It uses a virtual impactor to divide the air stream to facilite the collection of fine (0.0-2.5um) and coarse (2.5-10.0um) particles onto a filter media over a pre-programmed collection period. The coarse fraction was analysed
using X-ray flourescence and mass concentration analysis. Ion chromatography and mass concentration analyses were performed on the fine fraction.

The overall objective of the Southern California Supersite (SCS) was to conduct research and monitoring that contributes to a better understanding of the measurement, sources, size distribution, chemical composition, physical state, spatial and temporal variability, and health effects of suspended particulate matter (PM) in the Los Angeles Basin (LAB). Intensive aerosol measurements, well beyond the traditional PM2.5 mass, sulfate and nitrate concentrations, were conducted in several areas of the LAB. These included particle number concentrations, size distributions, and detailed PM chemical composition as a function of particle size. Sampling locations were chosen to provide
wide geographical and seasonal coverage, including urban source sites and downwind receptor sites.
The primary sampling facility, a mobile Particle Instrumentation Unit (PIU), was deployed to several locations to conduct a wide range of PM measurements. Sampling in each site lasted for 6-12 months. Intensive PM measurements were also conducted up and downwind of several freeways of the LAB, to characterize near-roadway exposure environments and to support several in vivo and in vitro health studies. The monitoring activities of the SCS were linked with toxicology studies in the LAB using a mobile PM Concentrator facility to investigate health effects associated with exposures to ultrafine, fine and coarse particles. Finally, the PIU facility was successfully used as a platform to develop, test, and evaluate numerous PM measurement instruments and sampling technologies, including several monitors for semi-continuous size fractionated mass and chemistry, personal PM exposure monitors, particle concentration technologies, and particle counting devices.

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Description: Table of NARSTO data products and additional product information.

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 34.13

S: 33.93

E: -117.33

W: -118.16

Temporal Coverage

Start Date: 2000-10-03

Stop Date: 2003-09-19

Location Keywords

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > LOS ANGELES

Science Keywords

ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES

ATMOSPHERE > AEROSOLS > PARTICULATE MATTER

ATMOSPHERE > ATMOSPHERIC CHEMISTRY > TRACE ELEMENTS/TRACE METALS

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Platform

GROUND STATIONS

Instrument

AEROSOL COLLECTORS

Project

EOSDIS > Earth Observing System Data Information System

NARSTO > North American Research Strategy for Tropospheric Ozone

ESIP > Earth Science Information Partners Program

Ancillary Keywords

Partisol

PM2.5-10 Metal concentration

Data Set Progress

COMPLETE

Originating Center

NARSTO Quality Systems Science Center

Data Center

Atmospheric Science Data Center, Science Directorate, Langley Research Center, NASA

Data Center URL: http://eosweb.larc.nasa.gov/
Dataset ID: NARSTO_EPA_SS_LOS_ANGELES_PARTISOL_DATA

Data Center Personnel
Name: ASDC USER SERVICES Phone: 757-864-8656 Email: support-asdc at earthdata.nasa.gov Contact Address: NASA Langley Atmospheric Science Data Center User and Data Services NASA Langley Research Center Mail Stop 157D City: Hampton Province or State: VA Postal Code: 23681-2199 Country: USA

Personnel

DR. COSTAS SIOUTAS

Role: INVESTIGATOR

Email: sioutas at usc.edu

Contact Address:

University of Southern California

3440 S. Hope Street

City: Los Angeles

Province or State: CA

Postal Code: 90089-7777

Country: USA

RONG CHUN, DR. YU

Role: INVESTIGATOR

Phone: 310-794-1408

Email: rcyu at ucla.edu

ASDC USER SERVICES

Role: DIF AUTHOR

Phone: 757-864-8656

Email: support-asdc at earthdata.nasa.gov

Contact Address:

NASA Langley Atmospheric Science Data Center

User and Data Services

NASA Langley Research Center

Mail Stop 157D

City: Hampton

Province or State: VA

Postal Code: 23681-2199

Country: USA

Publications/References

Rong Chun Yu, Hee Wen Teh, Peter A. Jaques, Constantinos Sioutas, John R. Froines. 2004. Quality control of semi-continuous mobility size-fractionated particle number concentration data. Atmospheric Environment, Volume 38, Issue 20, Pages 3341-3348.

Shen S, Jaques PA, Zhu YF, Geller MD, Sioutas C. 2002. Evaluation of the SMPS-APS system as a continuous monitor for measuring PM2.5, PM10 and coarse (PM2.5-10) concentrations. ATMOSPHERIC ENVIRONMENT 36(24) 3939-3950.

Creation and Review Dates

DIF Creation Date: 2011-08-16

Last DIF Revision Date: 2012-09-20

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