1 / 12

Quebec Smoke in the Northeast July 2002

Quebec Smoke in the Northeast July 2002. Summarized by R. Poirot. July 7, 2002 was one of the haziest days ever observed in VT High PM concentrations, Poor Visibility, & unusual “Yellow” color. Photo by Peter Huoppi in the Burlington (VT) Free Press 7/8/02 (taken 7/7/02).

rock
Download Presentation

Quebec Smoke in the Northeast July 2002

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Quebec Smoke in the NortheastJuly 2002 Summarized by R. Poirot

  2. July 7, 2002 was one of the haziest days ever observed in VT High PM concentrations, Poor Visibility, & unusual “Yellow” color Photo by Peter Huoppi in the Burlington (VT) Free Press 7/8/02 (taken 7/7/02)

  3. Burlington, VT CAMNET 7/5/0215:00 7/6/02 15:00 7/7/02 15:00

  4. Continuous Methods CAMM in Burlington TEOM in Rutland Compared well with Collocated FRMs on Peak Smoke Day

  5. Multiple Continuous PM-2.5 Methods in Rutland (& corresponding CO). Nephelometer typically compares well, except at high RH (but not on 7/8)?

  6. Fires East of James Bay on July 6, 2000 Satellite Detected Canadian Fires, 1994-97 VT Impacts on 7/7/02 from Quebec fires were Extreme, but smaller northern fire influences are not uncommon. Receptor Model Results on 1989-95 VT PM Data

  7. Similar Woodsmoke Source Identified by Battelle Receptor Modeling at Lye Brook, VT also appears to come from North Average Mass = 2.42 ug/m3 = 32.0 % of Total Fine Mass, Increasing Trend Bext: Major on Best 20% days, Minor on Worst 20% Days, Summer Maxima Major Mass Contributing Species of Source: OC, EC, S, K Major Species Contributed by Source: OC, Mn, V, K, EC Battelle Guess: Veg. Burning New Guess: Veg. Burning (local & Can.)

  8. PM2.5 Hourly values in NY state

  9. TEOM Data in Maine

  10. Canadian Fires Larger Than 200 Hectares

  11. MODIS Global Web Fire Maps

  12. Questions – Some unusual aspects of the 7/7/02 event: • Why was the Smoke “Yellow” (its usually “Blue”)? • Why wasn’t there much of a “Smoky Smell” other similarly distant fire impacts in VT (of lower mass impact) have typically come with strong aromatic “Smoke” odor)? • Why is there an apparently strong diurnal Pattern (from such a distant source)? • Comments - A great episode for further study because: • Widespread Haze & PM-relevant, multi-jurisdictional impacts • (Recent) Availability of lots of continuous PM-2.5 data • (Recent) Accessibility to other info sources (ASOS, Satellite) • Peak Impact day (7/7/02) was a FRM, STN, IMPROVE day.

More Related