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ACP | Articles | Volume 19, issue 12
Atmos. Chem. Phys., 19, 8229–8241, 2019
https://doi.org/10.5194/acp-19-8229-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Interactions between aerosols and the South West Asian...

Atmos. Chem. Phys., 19, 8229–8241, 2019
https://doi.org/10.5194/acp-19-8229-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 25 Jun 2019

Research article | 25 Jun 2019

Simulations of black carbon over the Indian region: improvements and implications of diurnality in emissions

Gaurav Govardhan et al.

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Cited articles

Chakraborty, A., Satheesh, S. K., Nanjundiah, R. S., and Srinivasan, J.: Impact of absorbing aerosols on the simulation of climate over the Indian region in an atmospheric general circulation model, Ann. Geophys., 22, 1421–1434, https://doi.org/10.5194/angeo-22-1421-2004, 2004. a
Chan, C. Y., Chan, L. Y., Harris, J. M., Oltmans, S. J., Blake, D. R., Qin, Y., Zheng, Y. G., and Zheng, X. D.: Characteristics of biomass burning emission sources, transport, and chemical speciation in enhanced springtime tropospheric ozone profile over Hong Kong, J. Geophys. Res.-Atmos., 108, ACH 3–1–ACH 3–13, https://doi.org/10.1029/2001JD001555, 2003. a
Chandra, S., Satheesh, S. K., and Srinivasan, J.: Can the state of mixing of black carbon aerosols explain the mystery of “excess” atmospheric absorption?, Geophys. Res. Lett., 31, L19109, https://doi.org/10.1029/2004GL020662, 2004. a
Cherian, R., Venkataraman, C., Quaas, J., and Ramachandran, S.: GCM simulations of anthropogenic aerosol-induced changes in aerosol extinction, atmospheric heating and precipitation over India, J. Geophys. Res.-Atmos., 118, 2938–2955, https://doi.org/10.1002/jgrd.50298, 2013. a
Chin, M., Diehl, T., Dubovik, O., Eck, T. F., Holben, B. N., Sinyuk, A., and Streets, D. G.: Light absorption by pollution, dust, and biomass burning aerosols: a global model study and evaluation with AERONET measurements, Ann. Geophys., 27, 3439–3464, https://doi.org/10.5194/angeo-27-3439-2009, 2009. a
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We show substantial improvements in the near-surface BC mass concentrations simulated by a regional chemistry transport model, WRF-Chem, over the Indian region, upon scaling up the CMIP5 equivalent anthropogenic BC emissions by 3 and introducing a diurnal variation to those. The diurnality in emissions alone significantly controls the simulated near-surface BC mass concentration, with a mean delay of 3–4 h. The simulated AOD, however, is still underestimated.
We show substantial improvements in the near-surface BC mass concentrations simulated by a...
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