1 / 19

Photo by Peter Huoppi in the Burlington (VT) Free Press 7/8/02 (taken 7/7/02)

Summer 2002 was a Regionally Hazy one in New England (Lots of Major Sulfate Episodes and One Big Forest Fire). … and most of these episodes (except the fire) were accurately forecast and “captured” by UMD Aircraft Flights over MANE-VU RPO region.

montana
Download Presentation

Photo by Peter Huoppi in the Burlington (VT) Free Press 7/8/02 (taken 7/7/02)

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. Summer 2002 was a Regionally Hazy one in New England (Lots of Major Sulfate Episodes and One Big Forest Fire) … and most of these episodes (except the fire) were accurately forecast and “captured” by UMD Aircraft Flights over MANE-VU RPO region

  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 (Note: “uncorrected” TEOM & CAMM and prelim. Filter weights - not equilibrated 24 hrs.)

  5. This is not an Exceedance Day – Clear Skies? Burlington VT PM2.5 7/7/02 FRM : 61.4 ug/m3 Duplicate FRM: 62.6 ug/m3 CAMM 24-hr mean: 61.9 ug/m3

  6. Impacts in NY State were highest at Highest Elevation (& most Northeasterly) Whiteface Mountain (from Dirk Felton, NY DEC)

  7. Maximum Impacts in Maine occurred a day or two later (7/8-10) Note Second Short Spike early AM of 7/10 was also observed in VT & Northeastern NY (Maine data from Tom Downs, Maine DEP)

  8. Acadia impact occurred later (7/8-10) than other NE sites. Burlington, VT camera faces West, so afternoon yellow color may be enhanced, but both the haze and the incident light had distinct yellow tint all day on 7/7/02.

  9. IMPROVE Nephelometers show the same pattern (well Duh!)

  10. The (experimental) NGN3 (2.5 um heated inlet) at Acadia (see fire data on previous slide) appears to be functioning quite nicely as a continuous PM-2.5 monitor (based on collocated FRM run by Maine DEP). Will be interesting to see the collocated Acadia NGN2/NGN3 comparison along with the IMPROVE Aerosol Speciation Data.

  11. Smoke Pattern from ASOS Visibility sensors The largest circles correspond to > 100 ug/m3 PM2.5 From R. Husar & his new data browser!

  12. Quebec Fires, July 6, 2002 SeaWiFS satellite and METAR surface haze shown in the Voyager distributed data browser Satellite data are fetched from NASA GSFC; surface data from NWS/CAPITA servers SeaWiFS, METAR & TOMS Index Superimposed

  13. 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

  14. 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.)

  15. Why is this a chronic Forest Fire Area?

  16. Burlington VT STN Mass agrees “perfectly” with Collocated CAMM & FRM(s) on 7/7/02 (Except for the SMOKE) this was Very, Very Clean Canadian Air Need to Assume Lots of Non-Carbon Organic Matter (Oxygen, Hydrogen, etc.)

  17. Traditional Fudge Factor: Organic Matter = 1.4 x Organic Carbon Here, we need factor of 1.8 or 2, depending on how OC’s defined, (& assuming most of the “missing mass” on 7/7/02 was “organic matter” (& not water, etc.) and also assuming the STN “OC” or “OCx2-adjusted OC” is OK…)

  18. Concerns over More Smoke on 7/11/02 Proved Incorrect It appears the Fires had largely been extinguished by July 9th or 10th

More Related