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NARSTO EPA_SS_PITTSBURGH Gas Conc and PM Physical Properties Data |
This data set provides Particulate Matter Composition Data of the following types. Significant descriptions of methods and processing are contained within the respective data files and in the references provided below.
The Pittsburgh Air Quality Study (PAQS) was a comprehensive, multi-disciplinary investigation to characterize the ambient PM in the Pittsburgh region. An overview of the program including a comprehensive list of all the data that were collected is described in Wittig, A. E.; Anderson, N.; Khlystov, A. Y.; Pandis, S. N.; Davidson, C. I.; Robinson, A. L., Pittsburgh Air Quality Study Overview. Atmospheric Environment 2004, 38, (20), 3107-3125.
The Pittsburgh Supersite was designed to achieve several objectives: to determine the physical and chemical characteristics of PM in the Pittsburgh region; to develop and evaluate the next generation of atmospheric aerosol monitoring techniques; to update emission profiles for important regional sources; to quantify the impact of the various sources on the local PM concentrations; and to predict changes in the PM characteristics due to proposed changes in emissions. The last objective was based on concurrent modeling studies and was designed to support the development of regulations. These objectives were addressed through four components of the research: (1) ambient monitoring at a central site and a set of satellite sites in the region; (2) an instrument development and evaluation study; (3) a data analysis and synthesis component; and (4) a comprehensive modeling component.
The central Supersite was located on a grassy hill in a large urban park adjacent to the Carnegie Mellon University campus, approximately 6km east of downtown Pittsburgh. It was separated from the city in the predominant upwind direction (south and west) by roughly 1km of parkland. It was at least several hundred meters from any other major source of air pollution: the site was positioned approximately 50m past the end of a dead end street, and several hundred meters from the nearest heavily traveled street. Five additional sites were operated as Satellite sites to character the spatial variation of the PM. The measurement campaign lasted for 14 months (July 2001-September 2002). Intensive monitoring was performed during two periods, from 1 July to 3 August, 2001 (ESP01) and 1 January to 15 January, 2002 (ESP02). Baseline monitoring was conducted for the rest of the study. Baseline measurements included daily filter samples for fine particle mass and composition (OC/EC, major ions, elemental composition).
The Pittsburgh Air Quality Study, which was supported by the US Environmental Protection Agency under contract R82806101 and the US Department of Energy National Energy Technology Laboratory under contract DEFC26-01NT41017.
The U.S. EPA Particulate Matter (PM) Supersites Program was an ambient air monitoring research program from 1999-2004 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 these 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. Data collected by these projects are publicly available at the NARSTO Permanent Data Archive, NASA Langley DAAC. Data users should acknowledge the U.S. EPA Particulate Matter (PM) Supersites Program and the project investigator(s) listed below.
The data set should be cited as follows:
Pandis, Spyros, Cliff Davidson, and Allen Robinson. 2007. NARSTO
EPA_SS_PITTSBURGH Gas Conc and PM Physical Properties Data. Available on-line
(http://eosweb.larc.nasa.gov/PRODOCS/narsto/table_narsto.html)
at the Atmospheric Science Data Center at NASA Langley Research Center,
Hampton, Virginia, U.S.A.
More information see The Pittsburgh Air Quality Study .
Data files are in the NARSTO Data Exchange Standard (DES) format that is described in detail on the NARSTO Quality Systems Science Center (QSSC) web site. The files follow a tabular layout and are stored as ASCII comma-separated values files (.csv). The DES does not rely on row position to identify specific information, but uses a tag to describe the information contained in the row. The DES is a self-documenting format with three main sections: the header contains information about the contents of the file and the data originator; the middle section contains metadata tables that describe/define sites, flags, and other codified fields; and the final section is the main data table that contains key sampling and analysis information and the data values. Descriptions of the standardized metadata fields are also available on the QSSC web site.
Time-series plots are included for all of the numeric variables in each of the data files. These plots are useful for screening for outliers and visualization of values less than the detection limit and values with other quality flags. See companion time-series plots (ZIP).
Users writing computer codes to read these data should be aware that some variables have formatting that differs from the format indicated in the *TABLE COLUMN FORMAT TYPE or *TABLE COLUMN FORMAT FOR DISPLAY key phrases. For example, values or missing codes for a "Decimal" variable may not have a decimal point.
Cabada, J. C.; Rees, S. L.; Takahama, S.; Khlystov, A.; Pandis, S. N.; Davidson, C. I.; Robinson, A. L., Mass size distributions and size resolved chemical composition of fine particulate matter at the Pittsburgh supersite. Atmospheric Environment 2004, 38, 3127-3141.
Cabada, J. C.; Khlystov, A.; Wittig, A. E.; Pilinis, C.; Pandis, S. N., Light scattering by fine particles during the Pittsburgh Air Quality Study: measurements and modeling. Journal of Geophysical Research-Atmospheres 2004, 109, (D16).
Millet, D. B.; Donahue, N. M.; Pandis, S. N.; Polidori, A.; Stanier, C. O.; Turpin, B. J.; Goldstein, A. H., Atmospheric volatile organic compound measurements during the Pittsburgh Air Quality Study: Results, interpretation, and quantification of primary and secondary contributions. Journal of Geophysical Research-Atmospheres 2005, 110, (D7).
Rees, S. L.; Robinson, A. L.; Khlystov, A.; Stanier, C. O.; Pandis, S. N., Mass Balance Closure and the Federal Reference Method for PM2.5 in Pittsburgh, Pennsylvania. Atmospheric Environment 2004, 38, (20), 3305-3318.
Stanier, C. O.; Khlystov, A. Y.; Pandis, S. N., Ambient aerosol size distributions and number concentrations measured during the Pittsburgh Air Quality Study (PAQS). Atmospheric Environment 2004, 38, (20), 3275-3284.
Wittig, A. E.; Anderson, N.; Khlystov, A. Y.; Pandis, S. N.; Davidson, C. I.; Robinson, A. L., Pittsburgh Air Quality Study Overview. Atmospheric Environment 2004, 38, (20), 3107-3125.
Name: Pandis, Spyros
E-mail: spyros@andrew.cmu.edu
Name: Davidson, Cliff
E-mail: cliff@cmu.edu
Name: Robinson, Allen
E-mail: alr@andrew.cmu.edu
The User and Data Services Office at the Langley Atmospheric Science Data Center is involved throughout the system to monitor the quality of data on ingest, to ensure prompt replies to user questions, to verify media orders prior to filling them, and to ensure that the needs of the users are being met. If you have a problem finding what you need, trouble accessing the system, or need an answer to a question concerning the data or how to obtain data, please contact the User and Data Services staff. Telephone: (757) 864-8656 FAX: (757) 864-8807 E-mail: larc@eos.nasa.gov URL: http://eosweb.larc.nasa.gov
The User and Data Services Office at the Langley Atmospheric Science Data Center is involved throughout the system to monitor the quality of data on ingest, to ensure prompt replies to user questions, to verify media orders prior to filling them, and to ensure that the needs of the users are being met.
If you have a problem finding what you need, trouble accessing the system, or need an answer to a question concerning the data or how to obtain data, please contact the User and Data Services staff.
Telephone: (757) 864-8656
FAX: (757) 864-8807
E-mail: larc@eos.nasa.gov
URL: http://eosweb.larc.nasa.gov
When data from the Langley Atmospheric Science Data Center are used in a publication, we request the following acknowledgment be included: These data were obtained from the NASA Langley Research Center Atmospheric Science Data Center. The Langley Data Center requests a reprint of any published papers or reports or a brief description of other uses (e.g., posters, oral presentations, etc.) of data that we have distributed. This will help us determine the use of data that we distribute, which is helpful in optimizing product development. It also helps us to keep our product-related references current. Please contact us at larc@eos.nasa.gov for instructions on mailing reprints.
When data from the Langley Atmospheric Science Data Center are used in a publication, we request the following acknowledgment be included: These data were obtained from the NASA Langley Research Center Atmospheric Science Data Center.
The Langley Data Center requests a reprint of any published papers or reports or a brief description of other uses (e.g., posters, oral presentations, etc.) of data that we have distributed. This will help us determine the use of data that we distribute, which is helpful in optimizing product development. It also helps us to keep our product-related references current.
Please contact us at larc@eos.nasa.gov for instructions on mailing reprints.
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