Predicted and Observed Histograms of Free Tropospheric Water vapor
Paper Number: 8.RA.15 Free Tropospheric Aerosol ... · Supported by Free Tropospheric Aerosol...
1
Supported by Free Tropospheric Aerosol Measurements at the Pico Mountain Observatory, Azores (2225m asl) Claudio Mazzoleni 1 ([email protected]), Lynn Mazzoleni 1 , Paulo Fialho 2 , Sumit Kumar 1 , Katja Dzepina 1 , Michael Dziobak 1 , Louisa Kramer 1 , Seth Olsen 3 , Robert Owen 4 , Detlev Helmig 5 , Jacques Hueber 5 , Swarup China 1 1 Atmospheric Science Program, Michigan Technological University, 2 Azores University, 3 University of Illinois, 4,* Michigan Tech Research Institute, 5 University of Colorado, * Currently at the U.S. E.P.A. The Pico Mountain Observatory Measurements Gases: 1. Carbon monoxide (NDIR-GFC) (since 2001) 2. Ozone (chemiluminescence) (since 2001) 3. Non Methane Hydrocarbons (GC) (2004-2006 and 2009-present) 4. Noxy (2002-2005 and 2008-2010) 5. PAN (2008-2009) Aerosol: 1. Seven-wavelength aethalometer (Mass equivalent Black Carbon) (since 2001) 2. PM intra-cavity Laser aerosol sizer (Aerosol optical Size from 0.09 to 1μm) (2010-2011) 3. Two-channels optical particle counter (PM>0.3 μm) (since 2012) 4. Three-wavelength nephelometer (Aerosol total and back- scattering) (since 2012) 5. Electron microscopy filter sampler (SEM membranes and TEM grids) (since 2012) 6. Four HiVol aerosol samplers (for EC/OC and detailed chemical analysis) (since 2012) Meteorological data 1. Rh, T, P (since 2001) 2. Wind speed and direction (since 2001) The Pico Mountain Observatory is located on Pico Island in the Azores, Portugal (38.47°N, 28.40°W). The station is far from persistent local sources on the summit caldera at an altitude of 2225 m and it lays typically above the boundary layer during summertime. Air masses reaching the station are often transported from North America and seldom from Europe or North Africa. The station was installed in 2001. http://instaar.colorado.edu/groups/pico/ 1. Richard Honrath for his pioneering effort in establishing the site and building the collaboration network 2. Mark Wise for assisting in the installation of the particle sizer 3. The Regional Government of Azores has supported politically and financially the Pico Mountain observatory and operation trough the Regional Secretariat for Science, Technology and Infrastructures (Project M1.2.1/I/006/2005); (Project M1.2.1/I/001/2008); (Project M1.2.1/I/002/2008) and also the Secretariat for the Environment and the Sea. Decadal Black Carbon Dataset 2012 Nephelometer Data Acknowledgments Key Points: In this poster we discuss a limited subset of the aerosol measurements performed at the Pico Mountain Observatory. The Black Carbon (BC) mass shows a clear seasonal pattern over a ten-years period. The 2012 scattering measurements show highly variable signals with events with high scattering and periods of very low aerosol loading. Dust events are clearly captured by the aethalometer ,as well the nephelometer Ångström exponents. Particles have various shapes, and mixing states, and soot particles typically are very compacted. The Location: The Azores are located in the middle of the North Atlantic Ocean where airmasses flow itypically Westerly. Electron Microscopy BC/Dust Event 2012 An aethalometer measures light attenuation through a quartz filter at 7 wavelengths. The measured attenuation is calibrated to an equivalent mass of black carbon with an assumed 1/λ dependence. Data were collected since 2001 over different periods of the year. In 2004 the instrument was operated for most of the year. Line in the middle of the boxes represent sample median, dots represent mean, lower and upper lines of the boxes are the 25 th and 75 th percentiles, whiskers indicate the 10 th and 90 th percentiles 0 2 4 0 50 100 150 200 250 Angstrom exponent 370-470 Angstrom exponent 470-520-660 Frequency count Bin Size 0 2 4 0 50 100 150 200 250 Angstrom exponent 470-520-660 Angstrom exponent 880-950 Frequency count Bin Size http://upload.wikimedia.org/wikipedia/commons/2/26/North_Atlantic_Ocean_laea_relief_location_map.jpg The Pico Volcano The Pico Mt. Observatory BC Seasonality Paper Number: 8.RA.15 0 20 40 60 80 100 0 10000 20000 30000 40000 50000 60000 (PM 0.3 ‐PM 0.4 )/PM 0.3 [%] PM [#/l] Run average 1h PM0.3 Run average 1h PM0.4 Normalized difference 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 BC Eq [g/m 3 ] 0.00 0.20 0.40 0.60 0.80 1.00 Fe [m/m 3 ] 0 10 20 30 40 50 60 Bsca [1/Mm] 1h run av Bsca 450nm 1h run av Bsca 535nm 1h run ave red Bsca 635nm ‐1 0 1 2 3 4 Angstrom Exponent TEM Images of bare (a) Pico - 28 July2012 and compacted- coated soot (b) Pico - 29 July2012 (a) (b) SEM Images of bare soot and irregular particles (a) Pico - 21July2012 and dust particle (b) Pico - 22 July2012 (a) (b) See also Poster by Katja Dzepina - 8RA.3 Thu 12:15-1:45 PM
Transcript of Paper Number: 8.RA.15 Free Tropospheric Aerosol ... · Supported by Free Tropospheric Aerosol...
Supported by
Free Tropospheric Aerosol Measurements at the Pico MountainObservatory, Azores (2225m asl)Claudio Mazzoleni1 ([email protected]), Lynn Mazzoleni1, Paulo Fialho2, Sumit Kumar1, Katja Dzepina1, Michael Dziobak1, Louisa Kramer1, Seth Olsen3, Robert Owen4, Detlev Helmig5, Jacques Hueber5, Swarup China1
1Atmospheric Science Program, Michigan Technological University, 2Azores University, 3University of Illinois, 4,*Michigan Tech Research Institute, 5University of Colorado, *Currently at the U.S. E.P.A.
The Pico Mountain Observatory
MeasurementsGases: 1. Carbon monoxide (NDIR-GFC) (since 2001)2. Ozone (chemiluminescence) (since 2001)3. Non Methane Hydrocarbons (GC) (2004-2006 and 2009-present) 4. Noxy (2002-2005 and 2008-2010)5. PAN (2008-2009)
Aerosol:1. Seven-wavelength aethalometer (Mass equivalent Black Carbon) (since 2001)2. PM intra-cavity Laser aerosol sizer (Aerosol optical Size from 0.09 to 1μm) (2010-2011)3. Two-channels optical particle counter (PM>0.3 μm) (since 2012) 4. Three-wavelength nephelometer (Aerosol total and back- scattering) (since 2012)5. Electron microscopy filter sampler (SEM membranes and TEM grids) (since 2012)6. Four HiVol aerosol samplers (for EC/OC and detailed chemical analysis) (since 2012)
Meteorological data1. Rh, T, P (since 2001)2. Wind speed and direction (since 2001)
The Pico Mountain Observatory is located on Pico Island in the Azores, Portugal (38.47°N, 28.40°W). The station is far from persistent local sources on the summit caldera at an altitude of 2225 m and it lays typically above the boundary layer during summertime. Air masses reaching the station are often transported from North America and seldom from Europe or North Africa. The station was installed in 2001.http://instaar.colorado.edu/groups/pico/
1. Richard Honrath for his pioneering effort in establishing thesite and building the collaboration network
2. Mark Wise for assisting in the installation of the particle sizer3. The Regional Government of Azores has supported politically and financially the Pico
Mountain observatory and operation trough the Regional Secretariat for Science, Technology and Infrastructures (Project M1.2.1/I/006/2005); (Project M1.2.1/I/001/2008); (Project M1.2.1/I/002/2008) and also the Secretariat for the Environment and the Sea.
Decadal Black Carbon Dataset
2012 Nephelometer Data
Acknowledgments
Key Points: In this poster we discuss a limited subset of the aerosol measurements performed at the Pico Mountain Observatory. The Black Carbon (BC) mass shows a clear seasonal pattern over a ten-years period. The 2012 scattering measurements show highly variable signals with events with high scattering and periods of very low aerosol loading. Dust events are clearly captured by the aethalometer ,as well the nephelometer Ångström exponents. Particles have various shapes, and mixing states, and soot particles typically are very compacted.
The Location: The Azores are located in the middle of the North Atlantic Ocean where airmasses flow itypically Westerly.
Electron Microscopy
BC/Dust Event 2012An aethalometer measures light attenuation through a quartz filter at 7 wavelengths. The measured attenuation is calibrated to an equivalent mass of black carbon with an assumed 1/λ dependence. Data were collected since 2001 over different periods of the year. In 2004 the instrument was operated for most of the year.
Line in the middle of the boxes represent sample median, dots represent mean, lower and upper lines of the boxes are the 25th and 75th percentiles, whiskers indicate the 10th and90th percentiles
0 2 40
50
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250
A ngstrom exponent370-470
A ngstrom exponent470-520-660
Freq
uenc
y co
unt
B in S ize0 2 4
0
50
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Angstrom exponent470-520-660
Angstrom exponent880-950
Freq
uenc
y co
unt
Bin Size
http://upload.wikimedia.org/wikipedia/commons/2/26/North_Atlantic_Ocean_laea_relief_location_map.jpg
The Pico Volcano The Pico Mt. Observatory
BC Seasonality
Paper Number: 8.RA.15
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(PM
0.3‐PM
0.4)/PM
0.3
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PM [#
/l]
Run average 1h PM0.3Run average 1h PM0.4Normalized difference
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BCEq
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3 ]
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9/4/2012 0:00 9/5/2012 0:00 9/6/2012 0:00 9/7/2012 0:00 9/8/2012 0:00 9/9/2012 0:00 9/10/2012 0:00
Fe [
m/m
3 ]
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Bsca [1
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1h run av Bsca 450nm1h run av Bsca 535nm1h run ave red Bsca 635nm
‐1
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Angstrom
Expon
ent
TEM Images of bare (a)Pico - 28 July2012and compacted-coated soot (b)Pico - 29 July2012
(a) (b)
SEM Images ofbare soot andirregular particles (a)Pico - 21July2012and dust particle (b)Pico - 22 July2012
(a) (b)
See also Poster by Katja Dzepina - 8RA.3 Thu 12:15-1:45 PM
