World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Characterization and Intercomparison of Aerosol Absorption Photometers: Result of Two Intercomparison Workshops : Volume 3, Issue 2 (07/04/2010)

By Müller, T.

Click here to view

Book Id: WPLBN0003999842
Format Type: PDF Article :
File Size: Pages 72
Reproduction Date: 2015

Title: Characterization and Intercomparison of Aerosol Absorption Photometers: Result of Two Intercomparison Workshops : Volume 3, Issue 2 (07/04/2010)  
Author: Müller, T.
Volume: Vol. 3, Issue 2
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2010
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Li, S., Müller, T., Engström, J. E., Wang, Y. Q., Viana, M., Tuch, T.,...Sheridan, P. J. (2010). Characterization and Intercomparison of Aerosol Absorption Photometers: Result of Two Intercomparison Workshops : Volume 3, Issue 2 (07/04/2010). Retrieved from http://www.ebooklibrary.org/


Description
Description: Leibniz Institute for Tropospheric Research, Leipzig, Germany. Absorption photometers for real time application have been available since the 1980s, but the use of filter-based instruments to derive information on aerosol properties (absorption coefficient and black carbon, BC) is still a matter of debate. Several workshops have been conducted to investigate the performance of individual instruments over the intervening years. Two workshops with large sets of aerosol absorption photometers were conducted in 2005 and 2007. The data from these instruments were corrected using existing methods before further analysis. The inter-comparison shows a large variation between the responses to absorbing aerosol particles for different types of instruments. The unit to unit variability between instruments can be up to 30% for Particle Soot Absorption Photometers (PSAPs) and Aethalometers. Multi Angle Absorption Photometers (MAAPs) showed a variability of less than 5%. Reasons for the high variability were identified to be variations in sample flow and spot size. It was observed that different flow rates influence system performance with respect to response to absorption and instrumental noise. Measurements with non absorbing particles showed that the current corrections of a cross sensitivity to particle scattering are not sufficient. Remaining cross sensitivities were found to be a function of the total particle load on the filter. The large variation between the response to absorbing aerosol particles for different types of instruments indicates that current correction functions for absorption photometers are not adequate.

Summary
Characterization and intercomparison of aerosol absorption photometers: result of two intercomparison workshops

Excerpt
Anderson, T. L., Covert, D. S., Wheeler, J. D., Harris, J. M., Perry, K. D., Trost, B. E., Jaffe, D. J., and Ogren, J. A.: Aerosol backscatter fraction and single scattering albedo: Measured values and uncertainties at a coastal station in the Pacific Northwest, J. Geophys. Res., 104(D21), 26793–26807, 1999.; Anderson, T. L. and Ogren, J. A.: Determining aerosol radiative properties using the TSI 3563 integrating nephelometer, Aerosol Sci. Tech., 29, 57–69, 1998.; Anderson, T. L., Covert, D. S., Marshall, S. F., Laucks, M. L., Charlson, R. J., Waggoner, A. P., Ogren, J. A., Caldow, R., Holm, R. L., and Quant, F. R., Sem, G. J., Wiedensohler, A., Ahlquist, N. A., and Bates, T. S.: Performance Characteristics of a High-Sensitivity, Three-Wavelength, Total Scatter/Backscatter Nephelometer, J. Atmos. Oceanic Technol., 13(5), 967–986, 1996.; Andreae, M. O.: The dark side of Aerosols, Nature, 409, 671–672, 2001.; Ansmann, A., Wandinger, U., Wiedensohler, A., and Leiterer, U.: Lindenberg Aerosol Characterization Experiment 1998 (LACE 98): Overview, J. Geophys. Res., 107(D21), 8129, doi:10.1029/2000JD000233, 2002.; Arnott, W. P., Hamasha, K., Moosmüller, H., Sheridan, P. J., and Ogren, J. A.: Towards aerosol light-absorption measurements with a 7-wavelength aethalometer: Evaluation with a photoacoustic instrument and 3-wavelength nephelometer, Aerosol Sci. Tech., 39, 17–29, 2002.; Bates, T. S., Huebert, B. J., Gras, J. L., Griffiths, F. B., and Durkee, P. A.: International Global Atmospheric Chemistry (IGAC) Project's First Aerosol Characterization Experiment (ACE 1): Overview, J. Geophys. Res., 103(D13), 16297–16318, 1998.; Bond, T. C., Anderson, T. L., and Campbell, D.: Calibration and intercomparison of filter-based measurements of visible light absorption by aerosols, Aerosol Sci. Tech., 30, 582–600, 1999.; Cappa, C. D., Lack, D. A., Burkholder, J. B., and Ravishankara, A. R.: Bias in filter-based aerosol light absorption measurements due to organic aerosol loading: Evidence from laboratory measurements, Aerosol Sci. Tech., 42, 1022–1032, doi:10.1080/02786820802389285, 2008.; Charlson, R. J., Langner, J., Rodhe, H., Leovy, C. B., and Warren, S. G.: Perturbation of the northern hemisphere radiative balance by backscattering from anthropogenic sulfate aerosols, Tellus, 43AB, 152–163, 1991.; Collaud Coen, M., Weingartner, E., Apituley, A., Ceburnis, D., Flentje, H., Henzing, J. S., Jennings, S. G., Moerman, M., Petzold, A., Schmidhauser, R., Schmid, O., and Baltensperger, U.: Minimizing light absorption measurement artifacts of the Aethalometer: evaluation of five correction algorithms, Atmos. Meas. Tech. Discuss., 2, 1725–1770, 2009.; Gerber, H. E.: Optical Techniques for the measurement of light absoption by particulates, in: Particulate Carbon, Atmospheric Life Cycle, edited by: Wolff, G. T. and Klimisch, R., Plenum Press, New York, 1982.; Hansen, A. D. A.: The Aethalometer, available at: http://mageesci.com/support/downloads/Aethalometer_book_2005.07.03.pdf, 2005.; Hansen, A. D. A., Rosen, H., and Novakov, T.: The aethalometer – an instrument for the real-time measurement of optical absorption by aerosol particles. Sci. Total Environ. 36, 191–196, 1984.; Hansen, J., Sato, M., and Ruedy, R.: Radiative forcing and climate response, J. Geophys. Res., 102(D6), 6831–6864, 1997.; Heintzenberg, J., Wiedensohler, A., Tuch, T. M., Covert, D. S., Sheridan, P. J., Ogren, J. A., Gras, J., Nessler, R., Kleefeld, C., Kalivitis, N., Aaltonen, V., Wilhelm, R.-T., and Havlicek, M.: Intercomparisons and aerosol calibrations of 12 commercial integrating nephelometers of three manufacturers, J. Atmos. Ocean. Tech., 23, 902–914, 2006.; Heintzenberg, J.: The SAMUM-1 experiment over Southern Morocco: overview and introduction, Tellus B, 61, 2–11, 2009.; Intergovernmental Panel on Climate Change (IPCC): Climate Change 2001: The Scientific Basis, Contribution

 

Click To View

Additional Books


  • Ground-based All-sky Mid-infrared and Vi... (by )
  • The Airborne Multiangle Spectropolarimet... (by )
  • Constraining Regional Greenhouse Gas Emi... (by )
  • Fast-response High-resolution Temperatur... (by )
  • Uncertainty Analysis of Computational Me... (by )
  • A New Aerosol Collector for Quasi On-lin... (by )
  • Eddy Covariance Flux Measurements with a... (by )
  • The Effect of Radiometer Placement and V... (by )
  • Observing Wind, Aerosol Particles, Cloud... (by )
  • Retrieval of Cirrus Optical Thickness an... (by )
  • Space and Ground Segment Performance and... (by )
  • On the Consistency of 2-d Video Disdrome... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.