SMOKE MANAGEMENT IN THE MONTEREY AREA. Presented at: 2011 NATIONAL AIR QUALITY CONFERENCE, SAN DIEGO. Presented by: Bob Nunes Monterey Bay Unified Air Pollution Control District. CHALLENGES FACED.
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SMOKE MANAGEMENT IN THE MONTEREY AREA
Presented at:2011 NATIONAL AIR QUALITY CONFERENCE, SAN DIEGO
Presented by:Bob NunesMonterey Bay Unified Air Pollution Control District
A Diverse Air Basin Setting Creates Very Different Conditions for Smoke Management between the Cool Coastal Plain and the Hot Inland Valleys.
For this reason, the Air District created separate coastal vs. inland zones for our Smoke Management Program.
Fort Hunter Liggett
Smoke Behaves Like Marine Stratus, Becomes Trapped Under
the Marine Inversion and Fumigates Smoke to the Ground-Level
GOOD SMOKE MANAGEMENTSmoke jettisoned vertically 1,000’s of feet in the air, far above population.
BAD SMOKE BEHAVIOR
Smoke tracking along the ground where it can impact nearby communities.
Ag Burns – Burn clean ag waste under permissive burn day conditions.
Range Improvement Burns - High emission events where the objective is to move the smoke above or away from population centers.
Fire Hazard Reduction – Reduce hazardous fuel build-up along the Wildland-Urban Interface.
Dry Fuels + Extra Air Efficient Burn with Less Smoke
Damp Fuels Smoky Burn
Overall Theme – Burn Hot, Dry, Quick and Clean
SUPERFUND PRESCRIBED BURNS AT FORMER FORT ORD
Smoke Management in a Challenging Setting
recommendations for next annual Burn Plan.
There are two basic phases:
The strategy looks for environmental conditions that will foster development of a vertical column that will jettison the majority of the smoke above population areas.
These conditions are rare at Fort Ord.
IGNITION vs. SMOLDER PHASE PLUMES
Low-level smoke emerges from smolder field, causing short-term offsite smoke impacts.
Vertical Obs – Ignition Timing
Problematic low level wind shear revealed by profiler.
Vertical Obs – Post Assessment
Wind Driven Smoke
Training Over Surface
the Presence of Lo-
Level Wind Shear
Oct 2008 Burn Day
Continuous hourly eBAMS PM2.5 monitors were deployed at 3 school sites:
These were co-located
at sites where an Army contractor was monitoring PM10.
District eBAM PM2.5 monitor