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 Sajeev Philip Arjya Sarkar Brian Boys

Tools: GEOS-Chem, ECHAM5-HAM global climate model, and CALIPSO

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


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. Discuss., 15, 29079-29124, 2015 [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, [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)]

Croft, B., U. Lohmann, R.V. Martin, P. Stier, S. Wurzler, J. Feichter, C. Hoose, U. Heikkila, A. van Donkelaar, and S. Ferrachat, Influences of in-cloud aerosol scavenging parameterizations on aerosol concentrations and wet deposition in ECHAM5-HAM, Atmos. Chem. Phys. , 10, 1511-1543, 2010. [Full Text (PDF)]

Croft, B., U. Lohmann, R.V. Martin, P. Stier, S. Wurzler, J. Feichter, R. Posselt, and S. Ferrachat, Aerosol size-dependent below-cloud scavenging by rain and snow in the ECHAM5-HAM, Atmos. Chem. Phys. Discuss., 9, 7873-7925, 2009. [Full Text (PDF)]