NARSTO PAC2001 NRC-IAR Convair 580 Particle Count, Ozone, Meteorological DataEntry ID: NARSTO_PAC2001_CONVAIR_PM_OZONE
Abstract: The main mission for the National Research Council (NRC) - Institute for
Aerospace Research (IAR) Convair 580 was to map the particle spatial
distribution in the valley through remote sensing, and to provide critical
meteorological data, particle number size distribution and O3 profiles. Only
the latter set of measurements are being archived at this time.
The ... flights followed mostly meridional and two approximately east?west tracks
at 4800 m over the valley for remote sensing using two LIDARs (Strapp and
Chevrier, 2001). Spirals from 150?6000 m, for vertical profiles of O3, particle
number size distribution, and meteorological parameters, were conducted at the
model western boundary at 49? 20'N and 123? 45' W, at the model southern
boundary of 48? 25' N and 123? W, as well as during takeoff and landing. A
typical flight covered the valley in eight meridional legs, approximately
equally spaced, with three of them directly over the ground sites Slocan Park
(SP), Langley Ecole Lochiel (LEL), and Sumas Eagle Ridge (SER). East?west
flight tracks were flown north and south of the Fraser River, covering most of
the urban centers of the valley to probe the urban-suburban-rural gradient,
with additional E?W tracks over the north shore lakes to help understand the
valley flow situation.
The remote sensing was based on aerosol backscattering using upward- and
downward-looking LIDARs at the 1064 nm wavelength with a depolarization channel
(Strawbridge and Snyder, 2004a). The profiles were obtained during aircraft
spirals, specifically located at the western and southern boundaries of the
domains of air quality models UAM/V and Model 3/CMAQ, and were intended as the
input as boundary conditions for further modeling. The Convair mission flights
covered an area with boundaries roughly corresponding to the model domain of
Model 3/CMAQ application to the region, with the eastern boundary at 121? 52'
30" W and the western boundary at 123? 50' 13" W, and extended from 48? 30' N
to 49? 30' N over the mountain tops.
On August 26th and 29th, night missions were flown from approximately 9 p.m. to
2 a.m. the next morning, primarily to map the nighttime movement of the urban
plume in the main and secondary valleys (Strawbridge and Snyder, 2004b). The
ground site overflights provided an assessment of the vertical thermal
structure and the extent of particle spatial distribution over the sites.
More information can be found in Li (2004), the Pacific 2001 Special Issue in
(Click for Interactive Map)
Start Date: 2001-08-14Stop Date: 2001-08-30
ATMOSPHERE > AEROSOLS > AEROSOL PARTICLE PROPERTIES
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
ATMOSPHERE > ATMOSPHERIC WINDS > UPPER LEVEL WINDS
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > OZONE
ISO Topic Category
Role: TECHNICAL CONTACT
Email: shao-meng.li at ec.gc.ca
Role: DIF AUTHOR
Email: larc-asdc-uds at lists.nasa.gov
NASA Langley Atmospheric Science Data Center User and Data Services NASA Langley Research Center 2 South Wright Street Mail Stop 157D Building 1268C
Province or State: VA
Postal Code: 23681-2199
Strapp, J., and W.T. Chevrier, Pacific 2001 flight plan report, 26p, June 2001.
Strawbridge and Snyder, 2004a Strawbridge, K., Snyder, B., 2004a. Planetary
boundary layer height determination during Pacific 2001 using the advantage of
a scanning lidar instrument. Atmospheric Environment, this issue,
Strawbridge and ... Snyder, 2004b Strawbridge, K., Snyder, B., 2004b. Daytime and
nighttime aircraft lidar measurements showing evidence of particulate matter
transport into the northern valleys of the Lower Fraser Valley, BC. Atmospheric
Environment, this issue, doi:10.1016/j.atmosenv.2003.10.036.
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
Creation and Review Dates
DIF Creation Date: 2004-12-17
Last DIF Revision Date: 2008-09-02