NARSTO PAC2001 Sumas Eagle Ridge Gaseous, Particle, and Meteorological DataEntry ID: NARSTO_PAC2001_SUMAS_MTN
Abstract: The NARSTO_PAC2001_SUMAS_MTN_GAS_PM_MET_DATA were obtained between August 13 and September 5, 2001 during the Pacific 2001 Air Quality Study (PAC2001).
Measurements at the Sumas Eagle Ridge (SER) site The SER site was located at 49.05166 N and -122.24666 W, at 300m a.s.l. and approximately 250m above the surrounding valley floor. The site was in a forest clearing of about 85 - 95m2 on top of a ... concrete-covered reservoir, and surrounded by a mixture of coniferous and deciduous trees. The shortest distance from the site to residential area was about 1 km, and was about 3 km to the edge of city of Abbotsford and the nearby major traffic route of Highway 1 in the valley floor. About 3 km to the south of the site, where the elevation drops to about 50m a.s.l. in the valley floor, NH3 emissions are strong from agricultural sources, and their impact of particle formation and hence the visibility reduction is expected to be significant. Because the site was elevated, the boundary layer did not reach the site each day until midmorning, as indicated by NO and CO. Hence, it was a unique site to study changes in gas and particle chemistry from light to dark hours, the nighttime chemistry and the interaction between biogenic emissions and urban pollution. The site was chosen also to characterize particles for optical, chemical and physical properties since PM in this area of the valley appears to be optically different from those typically observed over the urban areas in Vancouver. The main objectives were (1) to obtain mass and optical closure in order to better attribute aerosol types and sources to the issues of PM and visibility, and (2) to determine the contribution of non-volatile organic compounds, biogenic VOCs, and NH3 to particle mass.
Gas phase measurements included oxidant related species: O3, NOx , total and speciated NOy, H2O2, CO, SO2, VOCs, including terpenes and some of their oxidation products, carbonyls, and NH3. Nighttime NO3 was measured at a site near this main site by differential optical absorption spectroscopy. Particle chemical characterization measurements included size-distributed mass, inorganic composition, and organic carbon and elemental carbon (using quartz filters and thermal optical transmittance measurements from 0:05 to 18 mm AD. High-time resolution measurements using an AMS were carried out for the last 5 days during this period, covering the size distribution of inorganic and organic species from 0.06 to 0:7 mm AD. Carbon isotope and detailed speciation of organic carbon in particles 2:5 mm were done on high volume samples on quartz filters that were collected twice daily. Continuous mass measurements for particles 10 mm were made using a TEOM that operated at 50C. Particle physical measurements were made to characterize the particle evolution at this site. This included concentration of particles 40:015 mm, number size distribution measurements from 0.003 to 0:20 mm using ultrafine DMAs. Standard meteorological measurements were carried out at this site during the measurement period.
The Pacific 2001 Air Quality Study (PAC2001) was conducted from 1 August to 31 September, 2001 in the Lower Fraser Valley (LFV), British Columbia, Canada. The study consisted of individual research projects organized to address several issues on ambient particulate matter and ozone that are important to policy makers. A special issue of Atmospheric Environment [Vol. 38(34), Nov 2004] described specific study objectives (Li, 2004) and presented a series of results papers from the field study. The ground sampling sites during the study were (1) Cassiar Tunnel, (2) Slocan Park, (3) Langley Ecole Lochiel, (4) Sumas Eagle Ridge, and (5) Golden Ears Provincial Park. Aloft measurements were taken from a Convair 580 and a Cessna 188. Selected measurement data were compiled for each site and aircraft and are archived as site-specific data sets.
NARSTO (formerly North American Research Strategy for Tropospheric Ozone) is a public/private partnership, whose membership spans government, the utilities, industry, and academe throughout Mexico, the United States, and Canada. The primary mission is 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 available.
Start Date: 2001-08-13Stop Date: 2001-09-05
ATMOSPHERE > AEROSOLS > AEROSOL OPTICAL DEPTH/THICKNESS
ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES
ATMOSPHERE > AEROSOLS > CARBONACEOUS AEROSOLS
ATMOSPHERE > AEROSOLS > NITRATE PARTICLES
ATMOSPHERE > ATMOSPHERIC PRESSURE > ATMOSPHERIC PRESSURE MEASUREMENTS
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > CARBON MONOXIDE
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > NON-METHANE HYDROCARBONS/VOLATILE ORGANIC COMPOUNDS
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROGEN OXIDES
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > SULFUR COMPOUNDS > SULFUR DIOXIDE
ISO Topic Category
Data Set Progress
Role: TECHNICAL CONTACT
Email: shao-meng.li at ec.gc.ca
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
Alfarra, et al., 2004. Characterization of organic aerosols in the Lower Fraser
Valley during the Pacific 2001 using two Aerodyne aerosol mass spectrometers.
Atmospheric Environment, this issue, doi:10.1016/j.atmosenv.01.054.
Anlauf, K.G., Li, S.-M., Leaitch, W.R., Brook, J., Hayden, K., Wiebe, A., 2002.
Chemical and size characteristics of particles in the Lower Fraser Valley:
Pacific 2001 ... Field Study, Presentation at the American Geophysical Union Fall
Meeting, December 2002, San Francisco, CA, USA.
Boudries, H., et al., 2004. Chemical and physical processes controlling the
distribution of aerosols in the Lower Fraser Valley, Canada, during the PACIFIC
2001 field campaign. Atmospheric Environment, this issue, doi:10.1016/
Brook, J.R., Strawbridge, K., Snyder, B.J., Boundries, H., Worsnop, D., Anlauf,
K., Sharma, S., Hayden, K., 2004. Towards an understanding of the fine particle
variations in the LFV: integration of chemical, physical and meteorological
observations. Atmospheric Environment, this issue,
Chan, T.W., Mozurkewich, M., 2002. Atmospheric aerosol size distribution at
Sumas Mountain, Vancouver, BC. Presentation at the American Geophysical Union
Fall Meeting, December 2002, San Francisco, CA, USA.
Cheng, Y., Li, S.-M., Leithead, A., Leaitch, W.R., Brickell, P., 2004.
Characterizations of cis-pinonic acid and n-fatty acids on fine aerosols in the
Lower Fraser Valley during Pacific 2001 Air Quality Study. Atmospheric
Environment, this issue, doi:10.1016/j.atmosenv.2004.01.051.
Hayden, et al., 2004. Gaseous chemical characterization of the Lower Fraser
Valley airshed during Pacific 2001. Atmospheric Environment, this issue,
Huang, et al., 2002. Carbon isotope measurements of different carbon species
(OC and EC) in aerosols; method development, application to Pacific 2001
campaign samples and its implications. Presentation at the American Geophysical
Union Fall Meeting, December 2002, San Francisco, CA, USA.
Li, Shao-Meng. 2004. A concerted effort to understand the ambient particulate
matter in the Lower Fraser Valley: the Pacific 2001 Air Quality Study.
Atmospheric Environment, Volume, 38(34), pp. 5719-5731. (Pacific 2001 Special
McCarry, B.E., Rosati, M., Yang, R., 2002. PAH and nitro- PAH analyses of air
particulate material collected during Pacific 2001 study. Presentation at the
Symposium on Atmospheric Aerosols and Pacific 2001 Field Study, 85th CSC
Conference, Vancouver, Canada, June 1-5, 2002.
McLaren, et al., 2003. Presentation at the American Geophysical Union Fall
Meeting, December 2002, San Francisco, CA, USA.
Pryor, et al., 2004. Spatial and temporal variability of reduced nitrogen
concentrations in the Fraser Valley. Atmospheric Environment, this issue,
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Creation and Review Dates
DIF Creation Date: 2006-07-14
Last DIF Revision Date: 2013-12-02