Aerodyne AMS Users Meeting, St Louis, 8-10 September Why are we here? Data Analysis Clinics Boulder, PSI. Barcelona, Boulder
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1 Aerodyne AMS Users Meeting, St Louis, 8-10 September st/2nd AMS Users Meeting Portland / Aerodyne 3rd Aerodyne 4th Caltech 5th GaTech 6th Juelich 7th Minnesota 8th DRI, Reno, NV 9th Manchester Hi-Res Clinic Boulder 10th Toronto Data Analysis Clinics Boulder, PSI 11th Hyytiälä PSI (EUCAARI) 12th Orlando Barcelona, Boulder 13th Minnesota Boulder, PSI (ACSM) 14th Prague Boulder (AMS + CIMS) AMS Meeting at PKU 15th Korea / Orlando CIMS Aerodyne 16th Milan Boulder CIMS Fort Collins 17th Portland CIMS Boulder AMS Workshop at IAP PAM AGU 18th AMS/CIMS PKU, Beijing CIMS Helsinki PAM AGU Why are we here? 2018 Nanjing Chinese AMS Clinic CIMS(UWash.) 19th AMS (IAC, St Louis) [PAM]
2 AMS Introduction Doug Worsnop Nitrate Sulfate Ammonia Organics (44,57) AMS Users Meeting Aerodyne Caltech Georgia Tech FZ - Juelich University of Minnesota Desert Research Institute Manchester OOA, HOA OOA1, OOA2 O/C/N/H ratios SV-OOA, LV-OOA OOA/HOA Toronto Hyytiala Orlando -> Minnesota -> Prague Busan October 2001/2002 October 24, 2003 October 8, August, September, September, September 2008 SP -> BC CIMS -> HOM ELVOC C2H3O2-, I-, NO3- PM2.5, CE = 1 October 2009 September 2010 October 2011-> October Portland 2016; Beijing, 2017 St Louis, 2018 PMF/ME-2 source apportionment Molecular Revolution
3 Size and (elementally) chemically resolved Aerosol Mass Spectrometer (AMS) sub-micron aerosol composition Particle Beam Particle Composition Aerodynamic Sizing A simple molecular beam mass spectrometer Generation Time-of-flight (ToF) Mass Spectrometer Aerodynamic Lens Oven at 600 C Jayne et al, 2000; Drewnick et al, 2005; DeCarlo et al., 2006; Onasch et al, 2012
4 Inorganic (SO4,NO3) ~ Organic (OOA) O/C ~ 0.7 Hyytiälä 2 ug/m3 Beijing 80 ug/m3 Jimenez et al, Science, 2009
5 Highly Time- and Size-Resolved Characterization of Submicron Aerosol Particles in Beijing, using an Aerodyne Aerosol Mass Spectrometer Junying Sun*, Yangmei Zhang, Xiaochun Zhang, Xiaoye Zhang Nga L. Ng, Manjula R. Canagaratna, John T. Jayne, Douglas R. Worsnop, Yele Sun, Qi Zhang, CAMS 2006 Atmospheric Environment (2009)
6 Observed Urban and Remote Size Modes Urban Site Bi-modal Local Sources Remote Site Mono-modal Aged-Transported 3 dm/dlogd ( g m-3) Edinburgh, Scotland November, 2000 Cheju-Do Island, Korea April, 2001 Organics Nitrate Sulfate Sulfate Organics Nitrate Aerodynamic Diameter (nm) Aerodynamic Diameter (nm) Scotland SASUA-3 ACE ASIA Traffic mode Accumulation mode 2 3 Accumulation mode Allan, Alfarra et al. (U. Manchester)
7 Organic Mass Distributions Morning Rush Hour Traffic mode m/z = 57 C4H9+ m/z = 44 CO2+ Accumulation mode Small mode, hydrocarbon-based, primary traffic organic PM Accumulation mode oxidized organic PM
8 Secondary Aerosol Primary Aerosol PM-phase rxn PM Gases Gaseous organic EMISSIONS >> Combustion Secondary Organic Nucleation Aq-phase rxn PM Primary Organic Gas-phase oxidation Particle EMISSIONS
9 Ox = O3 + NO2
10 Primary Emission SO2 VOC Volatile Organic Compounds Secondary Formation H2SO4 one compound OOA Oxygenated Organic Aerosol 1,000 s compounds Analytical Challenge: AMS mass spectra simplify classification of too many organic compounds to identify
11 3.0-3 Nitrate Equivalent Mass Concentration (µg m ) Urban organic aerosol is a mixture of hydrocarbon and oxygenated components 43 Ammonium 4.8 ug/m3 Nitrate 5.8 Sulphate 9.4 Organics 13.4 Chloride Mexico City 2/ m/z (Daltons)
12 600C, ecnhmoy > H2O+ CO+ CO , 55 f44 vs O/C m/z 44 / org ratio 0.4 Oxalic Acid 0.3 Fulvic Acid 0.2 AMS Observations 0.1 PSI Chamber Oleic Acid + Ozone O/C ratio
13 Atmospheric (pressure) Ions API-ToFMS (Tofwerk) Mikael Ehn, Heikki Junninen BSMA
14 Negative ion spectra from Hyytiälä DAY C10H14O12N-? NIGHT
15 10 3 mbar CI-APi-TOF for neutral compound measurements Timing and control detector Acquisition Data processing HNO3,Acetone etc toftools - Eisele type inlet design. Filters, Flow control Flow control 3-stage turbo pump -Sheath flow 20 lpm, includes charger ions. -Total flow 30 lpm -> sample flow 10 lpm -Sample mixing with electric field -APi samples 0.8 lpm Compressor Diaphragm pump Scroll pump reflector
16 ELVOC C10,C20 in the gas phase O/C > 0.7 Nucleation, Clusters Nanoparticle growth
17
18 < ppt ppt ppb (ppm) Ilona Riipinen
19 ELVOC SVOC SVOC (NOx)
20 Inter-comparisons of four aerosol mass spectrometers during the summer time of 2018 in an urban site, Beijing, China Jian Zhao, Yao He, Weiqi Xu, Yele Sun
21 Instrument setups On the rooftop of a two-story building (~ 8 m above ground) in IAP (39o58 28 N, 116o22 16 E; 49 m.a.s.l.),cas, Beijing, China Ambient air (an typical urban site) Room 1 PM1 len, HR-ToF-AMS, standard vaporizer CDCE (~0.5); RIESO4=1.37; RIENH4=4.3; Room 2 PM1 len, Q-ACSM, standard vaporizer CDCE (~0.5); RIESO4=0.84; RIENH4=1.45; Room 3 PM2.5 len, ToF-ACSM1, capture vaporizer CE=1; RIESO4=1.09; RIENH4=3.06; PM2.5 len, ToF-ACSM2, capture vaporizer CE=1; RIESO4=1.02; RIENH4=3.08; PM2.5 URG cyclones Nafion Driers (for each instrument) (Sun et al., ACP, 2015)
22 Andreae et al., Nature, 2005 Erwartete Entwicklung: kühlende Effekte durch Sulfataerosole nehmen in Zukunft eher ab, (wegen der Gesundheitseffekte durch Feinstaub müssen die Aerosolbelastungen verringert werden), Gleichzeitig nehmen die erwärmenden Effekte durch steigende GHG-Emissionen zu. Deutliche Verschärfung des Klimawandels zu erwarten.
23 Why must GHG and Aerosols diverge? Aerosol Emissions CO2 Emissions RCP data: IIASA, 2009 Different forces are at work controlling emissions. And, of course, the lifetimes are different! Andi Andreae, MPI Mainz
24
25 Submicron Aerosol at a Receptor Site in New Delhi: Interpreting Sources and Their Origin. SAHIL BHANDARI, Shahzad Gani, Dongyu S. Wang, Kanan Patel, Sarah Seraj, Joshua Apte, Lea Hildebrandt Ruiz, University Of Texas At Austin Prashant Soni, Zainab Arub, Gazala Habib, Indian Institute of Technology Delhi 09/06/2018 Smog envelops buildings on the outskirts of the Indian capital New Delhi in November, Credit Roberto Schmidt/Agence France-Presse Getty Images
26 Aerodyne (MS) Product Line ACSM ToF-ACSM Mini-AMS HR-ToF-AMS LToF-AMS APi-TOF IMS-ToF GC-ToF PM2.5 Lens, eptof, Capture Vaporizer, ADQ SP- Module Thermo-denuder Aerosol Dryer / Sampling System PAM Flow Reactor IMR (I-), NO3- Module, EESI-ToF TAG Module Vocus-PTR-ToF
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