Aerosol Processes

Atmospheric aerosols degrade health and visibility, and have highly uncertain effects on climate. We are combining modeling, satellite remote sensing, and in situ observations to develop the representation of aerosol processes in chemical transport models.

Project Leaders:

Betty Croft Melanie Hammer Junwei Xu Chi Li Arjya Sarkar Brian Boys

Tools: GEOS-Chem, CALIPSO and OMI

Betty Croft and Junwei Xu are participating in NETCARE (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments).

References:

Xu, J.-W., R. V. Martin, A. Morrow, S. Sharma, L. Huang, W. R. Leaitch, J. Burkart, H. Schulz, M. Zanatta, M. D. Willis, D. K. Henze, C. J. Lee, A. B. Herber, and J. P. D. Abbatt: Source attribution of Arctic black carbon constrained by aircraft and surface measurements, Atmos. Chem. Phys. Discuss., doi:10.5194/acp-2017-236, 2017. [Link]

Croft, B., R. V. Martin, W. R. Leaitch, P. Tunved, T. J. Breider, S. D. D’Andrea, and J. R. Pierce, Processes controlling the seasonal cycle of Arctic aerosol number and size distributions, Atmos. Chem. Phys., 16, 3665-3682, doi:10.5194/acp-16-3665-2016, 2016. [Link]

Croft, B., G. R. Wentworth, R. V. Martin, W. R. Leaitch, J. G. Murphy, B. N. Murphy, J. K. Kodros, J. P. D. Abbatt and J. R. Pierce, Contribution of Arctic seabird-colony ammonia to atmospheric particles and cloud-albedo radiative effect, Nat. Commun., 7:13444, doi:10.1038/ncomms13444, 2016. [Link]

Croft, B., J. R. Pierce, and R. V. Martin, Interpreting Aerosol Lifetimes Using the GEOS-Chem Radionuclide Model Atmos. Chem. Phys., 14, 4313–4325, 2014. [Full Text (PDF)].

Philip, S., R. V. Martin, J. R. Pierce, J. L. Jimenez, Q. Zhang, M. R. Canagaratna, D. V. Spracklen, C. R. Nowlan, L. N. Lamsal, M. J. Cooper, and N. A. Krotkov, Spatially and seasonally resolved estimate of the ratio of global organic matter to organic carbon, Atmospheric Environment, 87 (2014) 34-40, http://dx.doi.org/10.1016/j.atmosenv.2013.11.065. [Full Text (PDF)].

Croft, B., Pierce, J. R., Martin, R. V., Hoose, C., and Lohmann, U., Uncertainty associated with convective wet removal of entrained aerosols in a global climate model, Atm. Chem. Phys. 12, 10725-10748, 2012. [Full Text (PDF)]