|
NARSTO PAC2001 Langley Site Gaseous, Particle, and Meteorological Data |
The Langley Ecole Lochiel (LEL) site was at 49.0289 N and -122.6025 W and at 90m a.s.l. The site was surrounded by hobby farms and by relatively few country roads that are lined with both coniferous and deciduous trees, with little change in terrain heights within a radius of 15 km. Nontraditional agricultural practices, such as mushroom and chicken farming and small orchards, are common within this radius of the site. The nearest small urban center, Langley, is about 6 km north of the site. The site was approximately 10 km to the major expressways of Highway 1 in Canada and I-5 in the US, and was approximately 6km to Highway 1A in Canada. Particle sampling was done in the center of an unobstructed field of approximately 30-50m2 about 2.5m from ground. On-site measurements were conducted from five temporary labs with inlets about 5m above ground.
Measurements at this site, from August 13th to 31st, were intended to address the unknowns related to particles and ozone, with an emphasis on the transition from the urban mix to a suburban/rural setting, particularly the impact of agricultural sources on the particulate matter formation and evolution. Similar to the instrumentation package at Slocan Park site, the instrumentation package includes measurements in these five categories.
Table 1 lists the selected measurements carried out at this site that are being archived.
Discussion of all measurements made at the Langley site: Measurements include detailed gas phase measurements of NOx=NOy (total and speciated), CO, O3 (Hayden et al., 2004), SO2, VOCs, OVOCs, carbonyls, NH3 (Pryor et al., 2004), HOx, and NH3. The large collection of gaseous measurements was intended for a detailed understanding of the oxidation environment and chemical processes in which both O3 and secondary particulate matter are formed. For particle chemical characterization at this site, detailed measurements were carried out on size distributed inorganic ionic components (Anlauf et al., 2002), organic carbon, elemental carbon, and mass from 0.05 to 18 mm AD twice a day. High-time resolution measurements using a second AMS were carried out, that was capable of measuring the size distribution of inorganic species and homologues of organic species from 0.06 to 0.7 mm (Boudries et al., 2004; Alfarra et al., 2004). Detailed organic carbon speciation measurements (Cheng et al., 2004; McCarry et al., 2002), carbon isotope characterization (Huang et al., 2002; Whiticar et al., 2002), sulfur isotope characterization (Norman et al., 2002), and amorphous carbon (Sloan et al., 2002) were carried out for particles 2.5 mm on 10-h day samples collected twice daily. The gas-particle partitioning of semi-volatile organic compounds was studied using a Hi-cap denuder sampling system and detailed lab organic analyses. Continuous mass measurements for particles 2.5 mm were made using a TEOM with a diffusion dryer on the inlet. Particle number size distributions were measured from 0.01 to 3 mm using a DMA and an optical probe. Hygroscopic properties of particles were measured at two particle sizes using two DMAs in tandem (Prenni et al., 2002). For NH3, HNO2, HNO3, HCHO, and PM 2.5 mm mass measurements and the particle chemical size distributions, more than one technique were deployed at this site. The multiple measurements of these species provided a test of the performance and validation of the different techniques and ensure that instrument biases were corrected. They also provide complementing data of different characteristics, such as better sensitivities versus time resolution. At this site, the diurnal evolution of the boundary layer height was studied using a scanning LIDAR (Strawbridge and Snyder, 2004a) that scanned the north, east and west quadrants. Radiation measurements, both UV and visible, were done using an Eppley and a CIMEL sun photometer (O'Neill et al., 2004).
Vertical distribution of certain parameters, such as O3 and meteorological parameters, in the lower part of the atmosphere were also assessed from tethered balloons at Langley Poppy High School, 7.9km northeast of the Langley Ecole Lochiel site. Number size distribution between 0.25 and 10 mm were done from ground the Langley Ecole Lochiel site. This was further aided by a scanning lidar that based at the Langley Ecole Lochiel site.
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] describes specific study objectives (Li, 2004) and presents 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 and aloft measurements were taken from a Convair 580 and a Cessna 188. Selected measurement data have been compiled for each site and aircraft and are archived as site-specific data sets.
| Species | Technique | Time Resolution | Frequency | PI |
|---|---|---|---|---|
| Gas Phase Measurements | ||||
| O3 | UV-photometry | 1-min | Continuous | Anlauf - MSC |
| NO, NO2 | Chemiluminescence | 1-min | Continuous | Hayden - MSC |
| NOy | Chemiluminescence | 1-min | Continuous | Anlauf - MSC |
| PAN/PPN | GC | 5-min | Continuous | Bottenheim - MSC |
| HNO3 | Annular denuder | 4-hour | 5/day | Anlauf - MSC |
| HNO2 | Annular denuder | 4-hr | 5/day | Anlauf - MSC |
| Speciated NMHC | Canister-capillary GC | Integrated 5-30 min | Every 3 hrs Every hour intensive |
Bottenheim - MSC Wang - EPS |
| Non-particle forming biogenic VOC (isoprene, OVOCs) | On-site GC/MS/FID | 2-hr | Continuous | Bottenheim - MSC |
| Particle-forming biogenic VOCs (mono-terpenes) | On-site GC/MS/FID | 2-hr | Continuous | Bottenheim - MSC |
| NH3 | coil-fluorescence | 5-min | Continuous | Pryor - U. Indiana |
| SO2 | Pulse fluorescence | 1-min | Continuous | Anlauf - MSC |
| CO | IR-absorption - gas correlation | 1-min | Continuous | Anlauf - MSC |
| HCHO | Coil-Hantz reaction-fluorescence | 1-min | Continuous | Macdonald - MSC |
| CH3CHO | DNPH cartridge | 4-hr | 6/day | Wang - EPS |
| Solar radiation | Eppley | 1-min | Continuous | Anlauf - MSC |
| HO2/RO2 | Radical amplifier | 1-5 min | Continuous | Mihele - MSC |
| Particle Chemical Characterization Measurements | ||||
| Size distribution (<0.05 - 15 µm) of inorganic species and mass | MOUDI Impactor - IC and micro-balance |
10 hour | 2/day | Anlauf/Li/Brook - MSC |
| Size distributed speciation | Aerodyne Aerosol Mass Spectrometer | 1-min | Continuous | Worsnop - Aerodyne |
| Black carbon | Optical absorption | 1-hr | Continuous | Sharma - MSC |
| Mass (<2.5 µm) | TEOM | 1-min | Continuous | Anlauf - MSC |
| Mass (<2.5 µm) | Regular FP - microbalance | 4-hrs | 5/day | Brook - MSC |
| Mass (<2.5 um) | URG ADS | 4-hrs | 5/day | Brook - MSC |
| Sulfur isotope (<2.5 µm) | Hivol FP - MS | 24-hrs | One/day | Norman - U. Calgary |
| Trace organics species - polar (<2.5 µm) | Hivol FP - solvent extraction - derivatization - GCMS/GC FID | 10-hrs | 2/day | McLaren - York U. |
| Air toxics | Hivol - solvent extraction - GC/MS | 24-hrs | 1/day | Harner - MSC |
| Trace organics species - aromatic acids (<2.5 µm) | Hivol FP - solvent extraction - derivatization - Capillary electrophoresis | 12-hrs | 2/day | Rudolph - York U. |
| PAHs - vapour phase | Hivol - Quartz filter - GC/MS, Daylight hours | Daylight hours | 1/day | Shoeib - MSC |
| PAHs - particle phase | Hivol - Quartz filter - GC/MS, Daylight hours | Daylight hours | 1/day | Shoeib MSC |
| Particle Physical Characterization Measurements | ||||
| Ultrafine particle number size distribution (6 - 300 nm) | DMA | 10-min | Continuous | Leaitch - MSC |
| H2O, Hygroscopicity | Thermal method | 10-min | Continuous | Leaitch - MSC |
| Meteorological Measurements and Vertical Profiling | ||||
| T, P, RH WS, WD at surface |
Typical met package | 1-min | Continuous | Anlauf - MSC |
| Met Sonding | Typical met package | Langley Poppy High School | 4/days | Froude - MSC |
The data set should be cited as follows:
Li, Shao-meng. 2004. NARSTO PAC2001 Langley Site Gaseous, Particle, and
Meteorological 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.
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.esd.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.
| Data File Names | Link to Time Series Plots of Reported Variables (PDF) |
|---|---|
| NARSTO_PAC2001_LNEL_ALN_S+O-ISOT-PM2.5_HIVOL_20010814D16_V1.csv | View LNEL_ALN_S+O-ISOT-PM2.5_HIVOL_20010814D16 |
| NARSTO_PAC2001_LNEL_AMM_HCHO_HANTZSCH_20010814D17_v1.csv | View LNEL_AMM_HCHO_HANTZSCH_20010814D17 |
| NARSTO_PAC2001_LNEL_C-M_GAS-ROX_20010814D18_V2.csv | View LNEL_C-M_GAS-ROX_20010814D18 |
| NARSTO_PAC2001_LNEL_DKW_CARBONYL_PART1_OF_1_20010813D19_V1.csv | View LNEL_DKW_CARBONYL_PART1_OF_1_20010813D19 |
| NARSTO_PAC2001_LNEL_DKW_VOC_PART1_OF_2_20010813D19_V1.csv | View LNEL_DKW_VOC_PART1_OF_2_20010813D19 |
| NARSTO_PAC2001_LNEL_DKW_VOC_PART2_OF_2_20010813D19_V1.csv | View LNEL_DKW_VOC_PART2_OF_2_20010813D19 |
| NARSTO_PAC2001_LNEL_J-R_AROM-ACIDS_HIVOL_20010820D12_V1.csv | View LNEL_J-R_AROM-ACIDS_HIVOL_20010820D12 |
| NARSTO_PAC2001_LNEL_J-R_PAH_HIVOL_20010820D12_V1.csv | View LNEL_J-R_PAH_HIVOL_20010820D12 |
| NARSTO_PAC2001_LNEL_JRB_PM25_ADS_20010813D20_V1.csv | View LNEL_JRB_PM25_ADS_20010813D20 |
| NARSTO_PAC2001_LNEL_JRB_PM25_TEOM_20010816D17_V1.csv | View LNEL_JRB_PM25_TEOM_20010816D17 |
| NARSTO_PAC2001_LNEL_JRB_PM25-OC+EC_FP-CYCLONE_20010814D19_V2.csv | View LNEL_JRB_PM25-OC+EC_FP-CYCLONE_20010814D19 |
| NARSTO_PAC2001_LNEL_JWB_PAN_GC-PDD_20010813D20_V1.csv | View LNEL_JWB_PAN_GC-PDD_20010813D20 |
| NARSTO_PAC2001_LNEL_KGA_GAS_PHASE_20010810D22_V1.csv | View LNEL_KGA_GAS_PHASE_20010810D22 |
| NARSTO_PAC2001_LNEL_KGA_GAS-PART-DENUD+FILTER_20010814D19_V1.csv | View LNEL_KGA_GAS-PART-DENUD+FILTER_20010814D19 |
| NARSTO_PAC2001_LNEL_KGA_MET_TOWER_20010813D19_V2.csv | View LNEL_KGA_MET_TOWER_20010813D19 |
| NARSTO_PAC2001_LNEL_KGA_PART-IONS_MOUDI_20010814D18_V1.csv | View LNEL_KGA_PART-IONS_MOUDI_20010814D18 |
| NARSTO_PAC2001_LNEL_M-S_GAS-OCS_20010814D17_V1.csv | View LNEL_M-S_GAS-OCS_20010814D17 |
| NARSTO_PAC2001_LNEL_M-S_GAS-PAH_20010814D17_V1.csv | View LNEL_M-S_GAS-PAH_20010814D17 |
| NARSTO_PAC2001_LNEL_M-S_PART-PAH_20010814D17_V1.csv | View LNEL_M-S_PART-PAH_20010814D17 |
| NARSTO_PAC2001_LNEL_PCB_OVOC_GC-FID_20010815D18_V1.csv | View LNEL_PCB_OVOC_GC-FID_20010815D18 |
| NARSTO_PAC2001_LNEL_R-M_PART-ORG_HIVOL_20010816D16_V1.csv | View LNEL_R-M_PART-ORG_HIVOL_20010816D16 |
| NARSTO_PAC2001_LNEL_SCP_GAS-NH3_20010816D18_V1.csv | View LNEL_SCP_GAS-NH3_20010816D18 |
| NARSTO_PAC2001_LNEL_S-L_PART-FATTY-ACIDS_20010816D15_V1.csv | View LNEL_S-L_PART-FATTY-ACIDS_20010816D15 |
| NARSTO_PAC2001_LNEL_S-L_PART-KETONES_20010816D15_V1.csv | View LNEL_S-L_PART-KETONES_20010816D15 |
| NARSTO_PAC2001_LNEL_S-L_PART-OHSSTEROLS_20010816D15_V1.csv | View LNEL_S-L_PART-OHSSTEROLS_20010816D15 |
| NARSTO_PAC2001_LNEL_S-S_BC_AETHALOMETER_20010814_D18_V1.csv | View LNEL_S-S_BC_AETHALOMETER_20010814 |
| NARSTO_PAC2001_LNEL_WRL_HYGGRO_HTDMA_20010816D16_V1.csv | View LNEL_WRL_HYGGRO_HTDMA_20010816D16 |
| NARSTO_PAC2001_LNEL_WRL_PART_DMA_20010817D16_V1.csv | View LNEL_WRL_PART_DMA_20010817D16 |
| NARSTO_PAC2001_LPHS_FAF_MET_SONDE_20010813D5_V1.csv | View LPHS_FAF_MET_SONDE_20010813D5 |
| NARSTO_PAC2001_LPHS_FAF_MET_SONDE_20010817D6_V1.csv | View LPHS_FAF_MET_SONDE_20010817D6 |
| NARSTO_PAC2001_LPHS_FAF_MET_SONDE_20010823D5_V1.csv | View LPHS_FAF_MET_SONDE_20010823D5 |
| NARSTO_PAC2001_LPHS_FAF_MET_SONDE_20010828D4_V1.csv | View LPHS_FAF_MET_SONDE_20010828D4 |
| NARSTO_PAC2001_LPHS_FAF_WINDS_SONDE_20010813D21_V1.csv | View LPHS_FAF_WINDS_SONDE_20010813D21 |
| NARSTO_PAC2001_WPF__FAF_MET_SONDE_20010808D23_V1.csv | |
| NARSTO_PAC2001_CWK__FAF_MET_SONDE_20010808D22_V1.csv | View CWK__FAF_MET_SONDE_20010808D22 |
Pacific 2001 data file names are comprised of nine sections, defined as follows:
Model file name: NARSTO_PAC2001_SLPK_JRB_MET_TOWER_200108D75_V1.csv
| Abbreviation | Site Name |
|---|---|
| BNDB | Boundary Bay |
| CSRT (CSTN, CSTS) | Cassiar Tunnel |
| GEPP | Golden Ears Provincial Park |
| LNEL | Langley Ecole Lochiel |
| LPHS | Langley Poppy High School |
| SLPK | Slocan Park |
| SLPS | Slope Study |
| SMMT | Sumas Mountain |
| CSNA | CFS Cessna 188 |
| CNVR | NRC-IAR Convair 580 |
| Initials | Name | Affiliation |
|---|---|---|
| AMM | Anne Marie Macdonald | Environment Canada |
| ANL | Anna Lise Norman | University of Calgary |
| C-M | Cris Mihele | Environment Canada |
| DKW | Danny Wang | Environment Canada |
| FAF | Frank Froude | Environment Canada |
| GVRD | Greater Vancouver Regional District | Greater Vancouver Regional District |
| HAB | H. A. Weibe | Environment Canada |
| J-R | Jochen Rudolph | York University |
| JRB | Jeff Brook | Environment Canada |
| JWB | Jan Bottenheim | Environment Canada |
| KGA | Kurt Anlauf | Environment Canada |
| LAG | Lisa Graham | Environment Canada |
| M-M | Mike Mozurkewich | York University |
| M-S | Mahiba Shoeib | Environment Canada |
| PCB | Peter Brickell | Environment Canada |
| R-M | Robert McLaren | York University |
| S-L | Shoa-meng Li | Environment Canada |
| S-P | Sara Pryor | University of Indiana |
| S-S | Sangeeta Sharma | Environment Canada |
| WOR | Douglas Worsnop | Aerodyne Research Inc. |
| WRL | Richard Leaitch | Environment Canada |
Alfarra, et al., 2003. 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.
Brook, et al., 2003. OC and EC measurement during Pacific 2001. Presentation at the European Aerosol Conference, 2003.
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/j.atmosenv.2004.01.057.
Hayden, et al., 2004. Gaseous chemical characterization of the Lower Fraser Valley airshed during Pacific 2001. Atmospheric Environment, this issue, doi:10.1016/j.atmosenv.2003.12.048.
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 Issue)
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.
Norman, A.L., Belzer, W., Barrie, L., Wang, D., 2002. Sulphate in PM2.5: results from the Pacific 2001 field campaign. 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, doi:10.1016/j.atmosenv.2003.12.045.
Wang, D., Fuentes, J.D., Dann, T., Travers, D., Connolly, T., Arktas, Y., 2002. Non-methane hydrocarbon measurements in the Vancouver region during Pacific 2001. Presentation at the American Geophysical Union Fall Meeting, December 2002, San Francisco, CA, USA.
Name: Li, Shao-meng
E-mail: shao-meng.li@ec.gc.ca
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.
Obtain a Portable Document Format (PDF) reader: Adobe Acrobat Reader | PDF Reader software list
