Optical depth, size distribution and flux of dust from Owens Lake, California

Optical depth, size distribution and flux of dust from Owens Lake, California

A joint United States/Russian/French collaborative experiment was undertaken in March 1993 and March 1996. Projects LODE I and II (Lake Owens Dust Experiments) took place on the anthropogenically desertified playa (dry lakebed) and surrounding regions of Owens Lake, in east‐central California. One o...

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Bibliographic Details
Published in:Earth surface processes and landforms Vol. 24; no. 5; pp. 463 - 479
Main Authors: Niemeyer, Tezz C., Gillette, Dale A., DeLuisi, John J., Kim, Young J., Niemeyer, William F., Ley, Trevor, Gill, Thomas E., Ono, Duane
Format: Journal Article
Language:English
Published: Chichester, UK John Wiley & Sons, Ltd 01-05-1999
Wiley
Subjects:
Arid and mediterranean areas
Bgi / Prodig
dust
Earth sciences
Earth, ocean, space
emissions
Exact sciences and technology
flux
Geomorphology
Geomorphology, landform evolution
optical depth
Owens Lake
Owens Lake, CA
Physical geography
Surficial geology
United States
California
United States of America
North America
dust
size distribution
Aeolian features
Dust storm
Aerosol
Aeolian dust
Arid area
Lake
Grain size distribution
Remote sensing
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Summary:A joint United States/Russian/French collaborative experiment was undertaken in March 1993 and March 1996. Projects LODE I and II (Lake Owens Dust Experiments) took place on the anthropogenically desertified playa (dry lakebed) and surrounding regions of Owens Lake, in east‐central California. One of the five parts of Project LODE was to determine relationships between optical depth and flux of dust emitted from the dry lake. Project LODE II included subsequent dust plume measurements and size distributions obtained through April 1996, to further refine the flux measurements for distinct mineral aerosol source regions at Owens Lake. Size distributions of dust aerosol were determined and aerosol optical depths were calculated from sunphotometer solar extinction measurements taken downwind in plumes coming from the emissive areas of Owens Lake. This source was visually observed for 10 measured dust storms. The plume mass was calculated to be 1·5 × 109 g using ground‐based measurements and ≥1·6 × 109 g from satellite data. Project LODE II results were found to be consistent with LODE I results for the south end of the playa, but flux values were found to be reduced for the northeastern portion of the playa by comparison. Vertical flux values estimated by sunphotometry were found to be consistent with values estimated via a micrometeorological method. Copyright © 1999 John Wiley & Sons, Ltd.
Bibliography:Great Basin Unified Air Pollution Control District
ark:/67375/WNG-8RP0CD2L-8
istex:D416295C8BC3666E221AF11B248B17777195E3CB
ArticleID:ESP2
California Air Resources Board
ISSN:0197-9337
1096-9837
DOI:10.1002/(SICI)1096-9837(199905)24:5<463::AID-ESP2>3.0.CO;2-R