1996 NARE (North Atlantic Regional Experiment): The fundamental aims were to determine the relative importance of natural and anthropogenic ozone O3 sources as well as to quantify the principal mechanisms for the transport of O3 and its precursors from the continental boundary layer to the remote marine troposphere. Measurements were made from the P-3 aircraft [Parrish, D.D., T.B. Ryerson, J.S. Holloway, M. Trainer, and F.C. Fehsenfeld, New directions: Does pollution increase or decrease tropospheric ozone in Winter-Spring?, Atmospheric Environment, 1999].
1994, 1995 SOS (Southern Oxidant Study): The primary purpose was to describe the sources, variation, and distribution of ozone and its precursors in the southeastern United States during the summer season using the P-3 aircraft. June and July 1994 and 1995 [Ryerson, T.B., M.P. Buhr, G.J. Frost, P.D. Goldan, J.S. Holloway, G. Hübler, B.T. Jobson, W.C. Kuster, S.A. McKeen, D.D. Parrish, J.M. Roberts, D.T. Sueper, M. Trainer, J. Williams, and F.C. Fehsenfeld, Emissions lifetimes and ozone formation in power plant plumes, Journal of Geophysical Research, 1998].
1991+ ONA (Ozone in the North Atlantic): Measurements of CO and O3 were made at surface coastal sites in Nova Scotia and Newfoundland, Canada and in the Azores. The goal of the study was to determine if the pollution plume of North America could be observed at the surface from 500 to 1500 km downwind from the Northeastern US urban corridor over Canada, and as far as 3000 km downwind in the Azores. [Parrish, D. D., J. S. Holloway, M. Trainer, P. C. Murphy, G. L. Forbes, and F. C. Fehsenfeld, Export of North American ozone pollution to the North Atlantic Ocean, Science, 259, 1436-1439, 1993; Parrish, D., M. Trainer, J. Holloway, J. Yee, M. Warshawsky, F. Fehsenfeld, G. Forbes, and J. Moody, Relationships between ozone and carbon monoxide at surface sites in the North Atlantic region, Journal of Geophysical Research, 1998].
1989 BOULDER, Colorado: A late winter-early spring study that focused on an ammonia measurement intercomparison [Williams, E., S. T. Sandholm, J. D. Bradshaw, J. S. Schendel, A. O. Langford, P. K. Quinn, P. J. LeBel, S. A. Vay, P. D. Roberts, R. B. Norton, B. A. Watkins, M. P. Buhr, D. D. Parrish, J. G. Calvert, F. C. Fehsenfeld, An intercomparison of five ammonia measurement techniques, Journal of Geophysical Research, 1992].
1988 NACNEMS: Measurements made at seven surface stations in the eastern U.S. and Canada during late summer and early fall of 1988. The focus of the campaign was the production of ozone and the partitioning of reactive oxidized nitrogen species in rural regions of eastern North America [Trainer, M., D. D. Parrish, M. P. Buhr, R. B. Norton, F. C. Fehsenfeld, K. G. Anlauf, J. W. Bottenheim, Y. Z. Tang, H. A. Wiebe, J. M. Roberts, R. L. Tanner, L. Newman, V. C. Bowersox, J. F. Meagher, K. J. Olszyna, M. O. Rodgers, T. Wang, H. Berresheim, K. L. Demerjian, U. K. Roychowdhury, Correlation of ozone with NOy in photochemically aged air, Journal of Geophysical Research, 98(D2), 2917-2925, 1993; Parrish, D. D., M. P. Buhr, M. Trainer, R. B. Norton, J. P. Shimshock, F. C. Fehsenfeld, K. G. Anlauf, J. W. Bottenheim, Y. Z. Tang, H. A. Wiebe, J. M. Roberts, R. L. Tanner, L. Newman, V. C. Bowersox, K. J. Olszyna, E. M. Bailey, M. O. Rodgers, T. Wang, H. Berresheim, U. K. Roychowdhury, K. L. Demerjiani, The total reactive oxidized nitrogen levels and the partitioning between the individual species at six rural sites in eastern North America, Journal of Geophysical Research, 1993].
1987 NIWOT RIDGE, Colorado: Ground site at Niwot Ridge, Colorado at an elevation of 3 km. Focus was on characterizing the odd-nitrogen species in rural areas [Ridley, B. A., J. D. Shetter, J. G. Walega, S. Madronich, C. M. Elsworth, F. E. Grahek, F. C. Fehsenfeld, R. B. Norton, D. D. Parrish, G. Hübler, M. Buhr, E. J. Williams, E. J. Allwine, H. H. Westberg, The Behavior of Some Organic Nitrates at Boulder and Niwot Ridge, Colorado, Journal of Geophysical Research, 1990].
1986 SCOTIA, Pennsylvania: Summertime measurements were made at a ground site in rural Pennsylvania near College Station. Interpretation of the results focused on photochemistry in rural environments, and defined the important role played by natural hydrocarbons [Trainer, M., E.J. Williams, D.D. Parrish, M.P. Buhr, E.J. Allwine, H.H. Westberg, F.C. Fehsenfeld and S.C. Liu: Models and observations of the impact of natural hydrocarbons on rural ozone, Nature, 1987].