Model analysis of the factors regulating the trends and variability of methane, CO2 and OH

Lead PI: Arlene H. Fiore

Unit Affiliation: Ocean and Climate Physics, Lamont-Doherty Earth Observatory (LDEO)

July 2014 - July 2018
Project Type: Research

DESCRIPTION: We investigate spatiotemporal variability in atmospheric oxidaton from polluted boundary layers to the remote atmosphere and the role of intercontinental transport. We are interested in observation-based constraints for testing the global chemistry-climate models used to project future changes in atmospheric composition and interactions with climate.


National Aeronautics & Space Administration




NASA Goddard Space Flight Center


Murray, L.T., A.M. Fiore, J.X. Warner, L.N. Lamsal, S.A. Montzka, R.G. Prinn, R.F. Weiss, G.A. Schmidt, A space-based proxy for tropospheric hydroxyl variability, in preparation for Proc. Nat. Acad. Sci.

Fiore, A. M., Fischer, E. V., Milly, G. P., Pandey Deolal, S., Wild, O., Jaffe, D. A., Staehelin, J., Clifton, O. E., Bergmann, D., Collins, W., Dentener, F., Doherty, R. M., Duncan, B. N., Fischer, B., Gilge, S., Hess, P. G., Horowitz, L. W., Lupu, A., MacKenzie, I. A., Park, R., Ries, L., Sanderson, M. G., Schultz, M. G., Shindell, D. T., Steinbacher, M., Stevenson, D. S., Szopa, S., Zellweger, C., and Zeng, G.: Peroxy acetyl nitrate (PAN) measurements at northern midlatitude mountain sites in April: a constraint on continental source–receptor relationships, Atmos. Chem. Phys., 18, 15345–15361,, 2018.

Valin, L. C., A. M. Fiore, K. Chance, and G. González Abad (2016), The role of OH production in interpreting the variability of CH2O columns in the southeast U.S., J. Geophys. Res. Atmos., 121, 478–493, doi:10.1002/2015JD024012.


global chemistry-climate models methane (CH4) oxidizing capacity hydroxyl radical long-range pollution transport


Modeling and Adapting to Future Climate