Table 1. Atmospheric Composition and Radiative Forcing Studies Previously Conducted in the ICARTT Study Region

Study	Dates	References
Northeastern North American Continental Studies
North American Cooperative Network of Enhanced Measurement Sites (NACEMS)	summer-fall 1988	Trainer et al. [1993] and Parrish et al. [1993] 
Acid Model Operational Diagnostic Evaluation Study (AMODES)	summer-fall 1988	Tremmel et al. [1993, 1994]
North East Oxidant and Particle Study (NARSTO-NE-OPS)	summers 1998, 1999, 2001	Zhang et al. [1998] and Seaman and Michelson [2000]
Harvard Forest	ongoing, long-term	Munger et al. [1998] and Goldstein et al. [1998]

Western North Atlantic Studies
Global Change Expedition/Coordinated Air-Sea Experiment/Western Atlantic Ocean Experiment (GCE/CASE/WATOX)	summer 1988	special section in Global Biogeochemical Cycles, 4, 1990
Atmospheric-Ocean Chemistry Experiment (AEROCE)	1988 to present	Prospero [2001]
North Atlantic Regional Experiment (NARE)	1993-1997	special section in Journal of Geophysical Research, 101(D22), 1996; special section in Journal of Geophysical Research, 103(D11), 1998; and Li et al. [2002]
SASS (Subsonic Assessment) Ozone and NOx Experiment (SONEX) Pollution from Aircraft Emissions in the North Atlantic Flight Corridor (POLINAT-2)	fall 1997	Singh et al. [1999] and Thompson et al. [2000b]
New England Air Quality Study (NEAQS)	summer 2002	Bates et al. [2005]

Western Europe and Eastern North Atlantic Studies
Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE)	spring and summer 1997	Reeves et al. [2002]
Maximum Oxidation rates in the free troposphere and Testing Atmospheric Chemistry in Anticyclones (MAXOX/TACIA)	summers in late 1990s	Reeves et al. [2002]
Atmospheric Chemistry and Transport of Ozone/European Export of Precursors and Ozone by Long-Range Transport (ACTO/EXPORT)	May and August 2000	Methven et al. [2003] and Purvis et al. [2003]
Convective Transport of Trace Gases into the Middle and Upper Troposphere over Europe: Budget and Impact on Chemistry (CONTRACE)	May and November 2001	Huntrieser et al. [2005]
EUROTRAC-TOR	1996-2002	Schultz et al. [1997]
Free Tropospheric Experiments (FREETEX)	1996 and 1998	Carpenter et al. [2000]

Aerosol and Radiative Forcing Studies
Atlantic Stratocumulus Transition Experiment/Marine Aerosol and Gas Exchange (ASTEX/MAGE)	June 1992	special section in Journal of Geophysical Research, 101(D2), 1996
Tropospheric Aerosol Radiative Forcing Observational Experiment (TARFOX) 	summer 1996	special section in Journal of Geophysical Research, 104(D2), 1999, and special section in Journal of Geophysical Research, 105(D8), 2000
Second Aerosol Characterization Experiment (ACE-2)	summer 1997	special issue in Tellus, Series B, 52(2), 2000
AEROSOLS99	winter 1999	special section in Journal of Geophysical Research, 106(D18), 2001