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Contrasting Trends of Mass and Optical Properties of Aerosols Over the Northern Hemisphere from 1992 to 2011 : Volume 12, Issue 7 (19/07/2012)

By Wang, K.

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Book Id: WPLBN0003985131
Format Type: PDF Article :
File Size: Pages 29
Reproduction Date: 2015

Title: Contrasting Trends of Mass and Optical Properties of Aerosols Over the Northern Hemisphere from 1992 to 2011 : Volume 12, Issue 7 (19/07/2012)  
Author: Wang, K.
Volume: Vol. 12, Issue 7
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Dickinson, R. E., Su, L., Trenberth, K. E., & Wang, K. (2012). Contrasting Trends of Mass and Optical Properties of Aerosols Over the Northern Hemisphere from 1992 to 2011 : Volume 12, Issue 7 (19/07/2012). Retrieved from

Description: State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China. Atmospheric aerosols impact both human health and climate. PMX is the mass concentration of aerosol particles that have aerodynamic diameters less than X Μm, PM10 was initially selected to measure the environmental impact of aerosols. Recently, it was realized that fine particles are more hazardous than larger ones and should be measured. Consequently, observational data for PM2.5 have been obtained but only for a much shorter period than that of PM10. Optical extinction of aerosols, the inverse of meteorological visibility, is sensitive to particles less than 1.0 μm. These fine particles only account for a small part of total mass of aerosols although they are very efficient in light extinction. Comparisons are made between PM10 and PM2.5 over the period when the latter is available and with visibility data for a longer period. PM10 has decreased by 44% in Europe from 1992 to 2009, 33% in the US from 1993 to 2010, 10% in Canada from 1994 to 2009, and 26% in China from 2000 to 2010. However, in contrast, aerosol optical extinction increased 7% in the US, 10% in Canada, and 18% in China during the above study periods. The reduction of optical extinction over Europe of 5% is also much less than the 44% reduction in PM10. Over its short period of record PM2.5 decreased less than PM10. Hence, PM10 is neither a good measure of changes in smaller particles or of their long-term trends, a result that has important implications for both climate impact and human health effects. The increased fraction of anthropogenic aerosol emission, such as vehicle exhaust, to total atmospheric aerosols partly explains this contrasting trend of optical and mass properties of aerosols.

Contrasting trends of mass and optical properties of aerosols over the Northern Hemisphere from 1992 to 2011

Chiacchio, M., Ewen, T., Wild, M., Chin, M. A., and Diehl, T.: Decadal variability of aerosol optical depth in Europe and its relationship to the temporal shift of the North Atlantic Oscillation in the realm of dimming and brightening, J. Geophys. Res., 116, D02108, doi:10.1029/2010jd014471, 2011.; den Outer, P. N., Slaper, H., Kaurola, J., Lindfors, A., Kazantzidis, A., Bais, A. F., Feister, U., Junk, J., Janouch, M., and Josefsson, W.: Reconstructing of erythemal ultraviolet radiation levels in Europe for the past 4 decades, J. Geophys. Res., 115, D10102, doi:10.1029/2009jd012827, 2010.; Dey, S. and Di Girolamo, L.: A decade of change in aerosol properties over the Indian subcontinent, Geophys. Res. Lett., 38, L14811, doi:10.1029/2011gl048153, 2011.; Dwyer, J. G., Norris, J. R., and Ruckstuhl, C.: Do climate models reproduce observed solar dimming and brightening over China and Japan?, J. Geophys. Res., 115, D00k08, doi:10.1029/2009jd012945, 2010.; Englert, N.: Fine particles and human health – a review of epidemiological studies, Toxicol. Lett., 149, 235–242, 2004.; Fenger, J.: Air pollution in the last 50 years – from local to global, Atmos. Environ., 43, 13–22, doi:10.1016/j.atmosenv.2008.09.061, 2009.; Field, R. D., van der Werf, G. R., and Shen, S. S. P.: Human amplification of drought-induced biomass burning in Indonesia since 1960, Nat. Geosci., 2, 185–188, doi:10.1038/ngeo443, 2009.; Allen, G., Sioutas, C., Koutrakis, P., Reiss, R., Lurmann, F. W., and Roberts, P. T.: Evaluation of the TEOM(R) method for measurement of ambient particulate mass in urban areas, J. Air Waste Manage., 47, 682–689, 1997.; Andreae, M. O., Hegg, D. A., and Baltensperger, U.: Sources and Nature of Atmospheric Aerosols, in: Aerosol Pollution Impact on Precipitation, edited by: Levin, Z. and Cotton, W. R., Springer Netherlands, 45–89, 2009.; Che, H. Z., Zhang, X. Y., Li, Y., Zhou, Z. J., and Qu, J. J.: Horizontal visibility trends in China 1981–2005, Geophys. Res. Lett., 34, L24706, doi:10.1029/2007GL031450, 2007.; Garcia-Herrera, R., Diaz, J., Trigo, R. M., Luterbacher, J., and Fischer, E. M.: A review of the European summer heat wave of 2003, Crit. Rev. Env. Sci. Tec., 40, 267–306, doi:10.1080/10643380802238137, 2010.; Hand, J. L. and Malm, W. C.: Review of aerosol mass scattering efficiencies from ground-based measurements since 1990, J. Geophys. Res., 112, D16203, doi:10.1029/2007JD008484, 2007.; Hoff, R. M. and Christopher, S. A.: Remote Sensing of Particulate Pollution from Space: Have We Reached the Promised Land?, J. Air Waste Manage., 59, 645–675, 2009.; Husar, R. B., Husar, J. D., and Martin, L.: Distribution of continental


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