surface ozone at remote, high elevation usfs and nps sites ... · surface ozone at remote, high...
TRANSCRIPT
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Surface Ozone at Remote, High
Elevation USFS and NPS Sites
Joel D. Burley
Saint Mary’s College of California, Moraga, CA
Andrzej Bytnerowicz USDA Forest Service, Pacific Southwest
Research Station, Riverside, CA
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Acknowledgements (SMC) Student Researchers and Project Volunteers Jason McLean and Christina Estill (summer 2003)
Emily King, Katie Azevedo, Kate Albaugh (2006-2007)
Adele Panasci (summer 2007)
Jill Eymann, Dr. Pat Jackson, Matt Jackson (summer 2008)
Matt Jackson, Easar Forghany, Katy Orr (summer 2009)
Katy Orr, Miran Meric, Kellee Murayama (summer 2010)
Chris Beck, Bianca Auble (summer 2011)
Anthony Villafranca, Olivia Hua, Cammy Parker (summer 2012)
Jennifer Chapman Varela (summer 2013)
Nick Kennen and Thinus Venter (summer 2014)
Jason Powell (summer 2015)
Maya Szafraniec (2016-2017)
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Acknowledgements (non-SMC)
John D. Ray (NPS)
Lee Tarnay (NPS – YOSE)
Luke Sabala (NPS – JOTR)
Monica Buhler (NPS – DEPO)
Ricardo Cisneros (UC–Merced)
Don Schweizer (UC–Merced)
Barbara Zielinska (DRI)
Mark McDaniel (DRI)
Susan Schilling (USFS)
Trent Procter (USFS)
Mae Gustin (UNR)
WMRC Support Staff
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Objectives
• Measure surface ozone concentrations at remote,
high elevation sites
• Analyze the results in terms of elevation, topography,
and surface vegetation
• Draw inferences, when possible, regarding the
relative contributions of long distance (trans-
Pacific) transport vs. regional transport vs. local
photochemical production of O3.
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SMC-USFS-NPS Field Work
• Summer field campaigns to date:
Yosemite NP (2003, 2005, 2007-2014)
Joshua Tree National Park (2006)
Eastern Sierra (2007-2009, 2013-2016)
White Mountains (2009-2016)
Lake Tahoe (2010, 2012)
Today: DEPO, Lake Tahoe, White Mountains
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Methodology
Solar-powered ozone “boxes”
ozone only (no meteorological data)
portable (~ 70 pounds)
can utilize satellite telemetry to
transmit data in real time
approx. cost is $7500 to $12000 per unit
have been in use since 2003
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Devils Postpile NM
• 2007 and 2008 – Summer measurements at Meadow Site
• 2013 – coordinated summer fieldwork using two closely
spaced sampling locations (Meadow Site, Flagpole Site)
• 2014 to present – year-round measurements at
both the Meadow Site and the Granite Dome Site
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Lake Tahoe Basin
• Summer 2010 – coordinated field study with active ozone
monitors at 12 different sites
• Summer 2012 – short-term follow-up study with active
ozone monitors at 4 different sites
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10
20
30
40
50
60
0 6 12 18 24
Avera
ge o
zone (
ppb)
Hour (0 = 24 = midnight PST)
Tahoe Sites, Summer 2010
GP9
AGL
ICN
THB
ECHO
IVL
GP8
GP7
VAL
WC
SPP
LBC
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White Mountains
• Measurements started in the summer of 2008 at one site
at 7295 fasl; currently operating year-round at three high-
elevation WMRC stations:
Crooked Creek (10,600 fasl)
Barcroft Observatory (12,725 fasl)
White Mtn. Summit (14,260 fasl)
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10
20
30
40
50
60
70
80
0 6 12 18 24
Avera
ge o
zone (
ppb)
Hour (0 = 24 = midnight PST)
Tahoe Sites (2010) and White Mountain Summit (2009 – 2015)
200
9
2011
201
2
201
3
201
4
201
5
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Wish List / Future Work
• A lightweight ozone “box” on the TB2 buoy in the middle of Lake Tahoe
• Additional collaborators for the WMRC sites
• Satellite telemetry for all of the O3 boxes, not just
WMRC - Summit and WMRC - Barcroft
• High-resolution modeling to help explain the results