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NARSTO EPA_SS_HOUSTON TEXAQS2000 Formaldehyde and Hydrogen Peroxide Data |
This data set contains continuous formaldehyde (HCHO) and hydrogen peroxide (H2O2) measurements collected during Aug/Sep 2000 during the Texas Air Quality Study 2000 (TEXAQS2000) at the HRM Site 3 monitoring station. Integrated single point measurements of 3-minute samples were collected every 10 minutes.
More information can be found at URL: http://www.utexas.edu/research/ceer/texaqs.
The dataset should be cited as follows:
Dasgupta, Purnendu. 2002. NARSTO EPA_SS_HOUSTON TEXAQS2000 Formaldehyde and
Hydrogen Peroxide Data. Available on-line
(http://eosweb.larc.nasa.gov/PRODOCS/narsto/table_narsto.html)
at the Langley DAAC, Hampton, Virginia, U.S.A.
The Houston 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 overall goals were to characterize the composition and identify the sources of particulate matter in Southeastern Texas, to develop and test new methods for characterizing fine particulate matter, and to collect data on the physical and chemical characterization of fine particulate matter that can be used to support exposure and health effects studies.
Specific objectives were to: 1) Collect physicochemical data on fine PM over a 16 month sampling period (August 2000 - November 2001) in Southeastern Texas; use the data to identify sources and to characterize spatial and temporal variability in fine PM source contributions and composition. 2) Compare the spatial and temporal variability in fine PM source contributions and composition in southeastern Texas to variability throughout the United States. 3) Examine the physical and chemical processes that govern PM formation and transformation in Southeastern Texas. 4) Develop a combined database on PM, gas phase air pollutants and meteorological variables, suitable for testing models of the formation and fate of fine PM; this objective was achieved by coordinating with a large, integrated ozone and PM field study conducted during the summer of 2000.
The U.S. EPA Particulate Matter (PM) Supersites Program [http://www.epa.gov/ttn/amtic/supersites.html] 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 Atmospheric Science Data Center. Data users should acknowledge the U.S. EPA Particulate Matter (PM) Supersites Program and the project investigator(s) listed below.
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 [http://cdiac.ornl.gov/programs/NARSTO/]. 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.
Li, J. and P. K. Dasgupta. 2000. Measurement of Atmospheric Hydrogen Peroxide and Hydroxymethyl Hydroperoxide with a Diffusion Scrubber and Light Emitting Diode-Liquid Core Waveguide Based Fluorometry. Anal. Chem. 72, 5338-5347.
Name: Dasgupta, Purnendu
E-mail: Sandy.dasgupta@ttu.edu
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