Pittsburgh, Pennsylvania, USA
Location   Latitude: 40.44; Longitude: -79.94
Site Type   Urban
Sampling Height   500 m (ASL)
Reported Time   September 2002
Instrument   Quadrupole Aerosol Mass Spectrometer

The creation, development, and maintenance of this database have been supported through the DOE Atmospheric System Research (ASR) grants DE-FG02-08ER64627, DE-SC0002191, and DE-FG02-11ER65293. 
If you use data from this database, please cite this web page and the paper(s) that reported the datasets you use.
Contact Qi Zhang for questions and comments

Time series of aerosol species

Species
Citation
Comments
Data

Sulfate 
Ammonium
Nitrate
Organics
Chloride
Total*


  1. 1 hour average
  2. Time: EST (= UTC - 5 hr)
  3. Concentrations reported at ambient conditions at the time of measurement
  4. Part of Pittsburgh Air Quality Study (PAQS)


Download 1-hour aveage mass concentration data

*Total = SO42-+ NO3-+ NH4++ Cl-+ Organics

Chemically resolved size distributions

Species
Citation
Figure #
Comments
Data




Total







Figure 3c




1 hour average





Sulfate







Figure 3d




1 hour average





Ammonium







Figure 3e




1 hour average





Nitrate







Figure 3f




1 hour average





Organics







Figure 3g




1 hour average



Deconvolved organic aerosol components (2 component analysis)

Components
Citation
Figure #
Comments
Data




HOA




Figure 9a-1




2-component analysis





OOA




Figure 9b-1




2-component analysis




Time series






Figure 1a



2-component analysis





QA/QC

Dectection limit (DL)

Collection efficiency (CE) and relative ionization efficiency (RIE)

Chemical species
CE
RIE

DL (ug/m3)

10 min Avg.
1 hr Avg.
Sulfate
0.5
1.15
0.05
0.020
Ammonium
0.5
3.8
0.11
0.045
Organics
0.7
1.4
0.15
0.061
Nitrate
0.5
1.1
0.01
0.004
Zhang, Q., et al. JGR 2005, 110, D07S09,doi:10.1029/2004JD004649



Intercomparisons with collocated instruments

 

Time series

Instruments
Citation
Figure #
Comments
Data


AMS Total vs. TEOM PM2.5 mass


Figure 2a

AMS Total = PM1

TEOM PM2.5 mass (R&P)

Time Series


Scatter plots



AMS Organics vs. OC


Figure 2b


2h OC (Sunset) and 24 hr OC (filter samples)


AMS Sulfate vs. PM2.5Sulfate



Figure 2c


PM2.5 Sulfate (Semicontinuous sulfate analyzer)









AMS Ammonium vs. PM2.5 Ammonium









Figure 2d









4hr PM2.5 Ammonium (Steam Sampler)

Size distributions 

Instruments
Citation
Figure #
Comments
Data





AMS and SMPS










Figure 4




AMS 2hr particle mass distribution vs. SMPS number distribution





Papers published on this dataset

  • Qi Zhang, Canagaratna, M., Jayne, J., Worsnop, D. and Jimenez, J. (2005) Time and Size-Resolved Chemical Composition of Submicron Particles in Pittsburgh - Implications for Aerosol Sources and Processes. Journal of Geophysical Research 110, D07S09, doi:10.1029/2004JD004649. PDF
  • Qi Zhang, Stanier, C., Canagaratna, M., Jayne, J., Worsnop, D., Pandis, S. and Jimenez, J. (2004) Insights into Nucleation Burst and Particle Growth in Pittsburgh Based on Aerosol Mass Spectrometry. Environmental Science & Technology 38(18), 4797-4809. PDF
  • Qi Zhang, Alfarra, R., Worsnop, D., Allan, J., Coe, H., Canagaratna, M., and Jimenez, J. (2005) Deconvolution and Quantification of Hydrocarbon-like and Oxygenated Organic Aerosols Based on Aerosol Mass Spectrometry. Environmental Science & Technology 39 (13), 4938-4952, doi:10.1021/es048568l. PDF
  • Qi Zhang, Worsnop, D., Canagaratna, M., and Jimenez, J. (2005) Hydrocarbon-like and Oxygenated Organic Aerosols in Pittsburgh: Insights into Sources and Processes of Organic Aerosols Atmospheric Chemistry and Physics, 5, 3289-3311. PDF
  • Qi Zhang, Jimenez, J., Worsnop, D., and Canagaratna, M. (2007) A Case Study of Urban Particle Acidity and Its Influence on Secondary Organic Aerosol, Environmental Science & Technology, 41 (10), DOI 10.1021/es061812j. PDF
  • Qi Zhang, J.L. Jimenez, M.R. Canagaratna, J.D. Allan, H. Coe, I. Ulbrich, M.R. Alfarra, A. Takami, A.M. Middlebrook, Y.L. Sun, K. Dzepina, E. Dunlea, K. Docherty, P.F. DeCarlo, D. Salcedo, T. Onasch, J.T. Jayne, T. Miyoshi, A. Shimono, S. Hatakeyama, N. Takegawa, Y. Kondo, J. Schneider, F. Drewnick, S. Weimer, K. Demerjian, P. Williams, K. Bower, R. Bahreini, L. Cotrell, R.J. Griffin, J. Rautiainen, J.Y. Sun, Y.M. Zhang, and D.R. Worsnop (2007) Ubiquity and Dominance of Oxygenated Species in Organic Aerosols in Anthropogenically-Influenced Northern Hemisphere Mid-latitudes, Geophysical Research Letters 34, L13801, doi:10.1029/2007GL029979 PDF
  • Jimenez, J. L, Canagaratna, M. R., Donahue, N. M., Prevot, A. S. H., Zhang, Q., Kroll, J. H., DeCarlo, P. F., Allan, J. D., Coe, H., Ng, N. L., Aiken, A. C., Docherty, K. S., Ulbrich, I. M., Grieshop, A. P., Robinson, A. L., Duplissy, J., Smith, J. D., Wilson, K. R., Lanz, V. A., Hueglin, C., Sun, Y. L., Tian, J., Laaksonen, A., Raatikainen, T., Rautiainen, J., Vaattovaara, P., Ehn, M., Kulmala, M., Tomlinson, J. M., Collins, D. R., Cubison, M. J., Dunlea, E. J., Huffman, J. A., Onasch, T. B., Alfarra, M. R., Williams, P. I., Bower, K., Kondo, Y., Schneider, J., Drewnick, F., Borrmann, S., Weimer, S., Demerjian, K., Salcedo, D., Cottrell, L., Griffin, R., Takami, A., Miyoshi, T., Hatakeyama, S., Shimono, A., Sun, J. Y., Zhang, Y. M., Dzepina, K., Kimmel, J. R., Sueper, D., Jayne, J. T., Herndon, S. C., Trimborn, A. M., Williams, L. R., Wood, E. C., Middlebrook, A. M., Kolb, C. E., Baltensperger, U., Worsnop, D. R. (2009) Evolution of Organic Aerosols in the Atmosphere, Science 326, 5959, doi:10.1126/science.1180353 PDF
  • N.L. Ng, M.R. Canagaratna, Q. Zhang, J.L. Jimenez, J. Tian, I.M. Ulbrich, J.H. Kroll, K.S. Docherty, P.S. Chhabra, R. Bahreini, S.M. Murphy, J.H. Seinfeld, L. Hildebrandt, N.M. Donahue, P.F. DeCarlo, V.A. Lanz, A.S.H. Prevot, E. Dinar, Y. Rudich, and D.R. Worsnop (2009) Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass SpectrometryAtmospheric Chemistry and Physics 10, 10, doi:10.5194/acp-10-4625-2010 PDF
  •  Qi Zhang, Jose L. Jimenez, Manjula R. Canagaratna, Ingrid M. Ulbrich, Nga L. Ng, Douglas R. Worsnop, Yele Sun (2011) Understanding atmospheric organic aerosols via factor analysis of aerosol mass spectrometry: a review Analytical Bioanalytical Chemistry 401, 10, doi:10.1007/s00216-011-5355-y PDF