Accession Number:

AD0700974

Title:

DISPERSION OF AIR TRACERS INTO AND WITHIN A FORESTED AREA. VOLUME I.

Descriptive Note:

Technical 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:

1969-09-01

Pagination or Media Count:

40.0

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 1969. Part 1 describes the experimental site, procedures and methods, Part 11 contains data collected and Part 111 results, discussion and conclusions. Author

Descriptors:

• (*AIR POLLUTION
• TRACER STUDIES)
• (*AEROSOLS
• DIFFUSION)
• ATMOSPHERIC TEMPERATURE
• POLLEN
• GASES
• FLUORESCENCE
• DYES
• INSECTS
• MICROORGANISMS
• WIND
• FORESTRY

Subject Categories:

• Meteorology
• Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE