Articles | Volume 15, issue 20
https://doi.org/10.5194/acp-15-11521-2015
https://doi.org/10.5194/acp-15-11521-2015
Research article
 | 
20 Oct 2015
Research article |  | 20 Oct 2015

Long-range transport of black carbon to the Pacific Ocean and its dependence on aging timescale

J. Zhang, J. Liu, S. Tao, and G. A. Ban-Weiss

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Cited articles

Ban-Weiss, G. A., Cao, L., Bala, G., and Caldeira, K.: Dependence of climate forcing and response on the altitude of black carbon aerosols, Clim. Dynam., 38, 897–911, https://doi.org/10.1007/s00382-011-1052-y, 2012.
Bell, M. L., Ebisu, K., Peng, R. D., Samet, J. M., and Dominici, F.: Hospital Admissions and Chemical Composition of Fine Particle Air Pollution, Am. J. Resp. Crit. Care, 179, 1115–1120, https://doi.org/10.1164/rccm.200808-1240OC, 2009.
Bian, H., Colarco, P. R., Chin, M., Chen, G., Rodriguez, J. M., Liang, Q., Blake, D., Chu, D. A., da Silva, A., Darmenov, A. S., Diskin, G., Fuelberg, H. E., Huey, G., Kondo, Y., Nielsen, J. E., Pan, X., and Wisthaler, A.: Source attributions of pollution to the Western Arctic during the NASA ARCTAS field campaign, Atmos. Chem. Phys., 13, 4707–4721, https://doi.org/10.5194/acp-13-4707-2013, 2013.
Bollasina, M. A., Ming, Y., and Ramaswamy, V.: Anthropogenic Aerosols and the Weakening of the South Asian Summer Monsoon, Science, 334, 502–505, https://doi.org/10.1126/science.1204994, 2011.
Bollasina, M. A., Ming, Y., Ramaswamy, V., Schwarzkopf, M. D., and Naik, V.: Contribution of local and remote anthropogenic aerosols to the twentieth century weakening of the South Asian Monsoon, Geophys. Res. Lett., 41, 680–687, https://doi.org/10.1002/2013gl058183, 2014.
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We tag BC emissions from 13 source regions around the globe in a global chemical transport model MOZART-4 and optimize the aging timescale for each source region by minimizing errors in vertical profiles of BC mass mixing ratios between simulations and HIAPER Polo-to-Pole Observations (HIPPO). We find that the optimized aging timescale of BC varies significantly by region and season. Our simulations indicate that BC lifetime increases nearly linearly with aging timescale for all source regions.
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