Accession Number : AD0719284

Title :   Dispersion of Air Tracers Into and Within a Forested Area: Volume 3.

Descriptive Note : Final rept.,

Corporate Author : WASHINGTON UNIV SEATTLE COLL OF FOREST RESOURCES

Personal Author(s) : Fritschen,Leo J. ; Driver,Charles H. ; Avery,Charles ; Buffo,John ; Edmonds,Robert

Report Date : OCT 1970

Pagination or Media Count : 54

Abstract : Dispersion of fluorescent powders, dyes and spores from a clearcut area into and within a 45-year old Douglas-fir forest was studied under various meteorological conditions. A total of 111 rotorods samplers were used to trap the tracers within a canopy volume of 20 m height, 210 m width and 270 m length. Wind speed, direction and air temperature were monitored on five towers on a line perpendicular to the forest wall. Twenty-four multiple location releases were made during 1968 and 1963. Part 1 describes the experimental site, procedures and methods, Part 2 contains data collected and Part 3 results, discussion and conclusions. (Author)

Descriptors :   (*AIR POLLUTION, TRACER STUDIES), (*AEROSOLS, DIFFUSION), SCATTERING, FLUORESCENCE, POWDERS, DYES, SPORES, ATMOSPHERIC MOTION, VELOCITY, TOWERS, ATMOSPHERIC TEMPERATURE, METEOROLOGICAL INSTRUMENTS, COLLECTING METHODS, DATA PROCESSING, TREES

Subject Categories : Meteorology
      Air Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE