Articles | Volume 15, issue 21
https://doi.org/10.5194/acp-15-12487-2015
https://doi.org/10.5194/acp-15-12487-2015
Research article
 | 
10 Nov 2015
Research article |  | 10 Nov 2015

A multi-year study of lower tropospheric aerosol variability and systematic relationships from four North American regions

J. P. Sherman, P. J. Sheridan, J. A. Ogren, E. Andrews, D. Hageman, L. Schmeisser, A. Jefferson, and S. Sharma

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Subject: Aerosols | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Anderson, T. L. and Ogren, J. A.: Determining aerosol radiative properties using the TSI 3563 1400 integrating nephelometer, Aerosol Sci. Technol., 29, 57–69, 1998.
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, 26793–26807, https://doi.org/10.1029/1999JD900172, 1999.
Anderson, T. L., Masonis, S. J. Covert, D. S., Ahlquist, N. C., Howell, S. G., Clarke, A. D., and McNaughton, C. S.: Variability of aerosol optical properties derived from in situ aircraft measurements during ACE-Asia, J. Geophys. Res., 108, 8647, https://doi.org/10.1029/2002JD003247, 2003.
Andreae, M. O., Jones, C. D., and Cox, P. M.: Strong present-day aerosol cooling implies a hot future, Nature, 435, 1187–1190, 2005.
Andrews, E., Sheridan, P. J., Ogren, J. A., and Ferrare, R.: In situ aerosol profiles over the Southern Great Plains cloud and radiation test bed site: 1. Aerosol optical properties, J. Geophys. Res. 109, D06208, https://doi.org/10.1029/2003JD004025, 2004.
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Short summary
Variability in aerosol optical properties relevant to radiative forcing were studied on several timescales at four continental North American NOAA-ESRL sites. Light scattering and intensive properties varied most on seasonal scales while absorption variability on weekly and diurnal timescales was comparable to its seasonal variability. Large reductions in light scattering were observed at the two long-term sites (relative to late 1990s), along with a smaller contribution by sub-1µm particles.
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