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Profile Page

John Merrill
Emeritus Professor of Oceanography
313 CACS building
401 874 6715

Educational Background

Ph.D., Atmospheric Science
M.S., Physics
B.A., Physics
University of Colorado, Boulder
University of Illinois, Urbana-Champaign
University of California, Berkeley

Areas of Specialization


My research work has been on long range transport at large scales, in collaboration with atmospheric chemists, volcanologists, and paleoclimatologists. We use ozonesondes to obtain vertical profiles above Narragansett to study the role of meteorological processes in atmospheric chemistry; and we observe near-surface winds to study the extent and variability of trends.


I advise graduate students, teach a graduate course on climate, OCG 535, and co-instruct an undergraduate oceanography course, OCG 123.


Kelly Knorr
Michael St. Laurent
Charles Eaton
Sarah Whitford
Stephanie Butman
Sherri Hitz
Samuel Hall
Julie Snow
Stephanie Schollaert
William Ellis


Shen, H., B. Heikes, J. Merrill, McNichol, A.P. and L. Xu (2010), “Coastal New England pilot study to determine fossil and biogenic formaldehyde source contributions using radiocarbon.” J. Geophys Res., 115, D10301, doi 10.1029/2009JD012810.

Fero, J., S. Carey and J. Merrill (2009), “Simulating the dispersal of tephra from the 1991 Pinatubo eruption: Implications for the formation of widespread ash layers.” Journal of Volcanology and Geothermal Research, 186, 120-131. doi 10.1016/j.jvolgeores.- 2009.03.011.

Parrington, M., et al. (2009), “The impact of the assimilation of ozone from the Tropospheric Emission Spectrometer on surface ozone across North America.” Geophys. Res. Lett., 36, L04802, doi 10.1029/2008GL036935.

Nassar, R. et al. (2008), “Validation of Tropospheric Emission Spectrometer (TES) nadir ozone profiles using ozonesonde measurements.” J. Geophys. Res. 113, D15S17, doi 10.1029/2007JD008819.

Fero, J., S. Carey and J. Merrill (2008), "Simulation of the 1980 eruption of Mount St. Helens using the ash-tracking model PUFF." Journal of Volcanology and Geothermal Research 175, 355-366, doi 10.1016/j.jvolgeores.- 2008.03.029.

Thompson A. M., et al. (2007), Intercontinental Chemical Transport Experiment Ozonesonde Network Study (IONS) 2004: 2. Tropospheric ozone budgets and variability over northeastern North America, J. Geophys. Res., 112, D12S13, doi:10.1029/2006-

Cooper O. R., et al. (2006), Large upper tropospheric ozone enhancements above midlatitude North America during summer: In situ evidence from the IONS and MOZAIC ozone measurement network, J. Geophys. Res., 111, D24S05, doi:10.1029/2006-

Merrill, J. and J. Kim (2004), Meteorological events and transport patterns in ACE-Asia, J. Geophys. Res., 109, D19S18, doi 10.1029/2003JD004124.


Analysis of Rhode Island coastal wind profiles, Kelly Knorr and John Merrill, AGU Fall meeting, San Francisco, December, 2012.

Impact of instrumental response on observed ozonesonde profiles: First order estimates and implications for measures of variability, Glenna Clifton, J. T. Merrill, B. Johnson and S. Oltmans, AGU Fall meeting, San Francisco, December, 2009.

Layering occurrence and characteristics in ozonesonde profiles in the upper troposphere/lower stratosphere region, K. George, J. Merrill, B. Johnson, S. Oltmans and J. Snow, AGU Fall meeting, San Francisco, December, 2008.

Wind field structure, divergence and vertical exchange in PASE, J. Merrill, D. Lenschow, I. Faloona and S. Conley, AGU Fall meeting, San Francisco, December, 2008.

Simulation of the 1980 eruption of Mt. St. Helens using the ash-tracking model PUFF, J. Fero, S. Carey and J. T. Merrill, AGU Fall meeting, San Francisco, December, 2007.

Student investigations of tropospheric ozone, S. Austin et al., AGU Fall meeting, San Francisco, December, 2006.

Tropospheric ozone across North America in summer, 2004 from ozonesonde observations during IONS, J. T. Merrill, S. Oltmans, B. Johnson and A. M. Thompson, AGU Fall meeting, San Francisco, December 2005.


Member for
6 years 38 weeks