M - O
OAXTC
The main goal of the NOAA/CMDL Ocean/Atmosphere Exchange of Trace Compounds (OAXTC) 1992 study was to determine the atmospheric mixing ratio of hydrochlorofluorocarbon 22 (HCFC-22) and its partial pressure in surface waters of the West Pacific Ocean to assess the possible existence of an oceanic sink for this compound. The ship, John V. Vickers, started out of Long Beach, CA, and reached Dutch Harbor, AK, one week later. The cruise continued to a point offshore of Kamchatka, Russia, Kwajalein Atoll, Marshall Islands, and finally ended in Noumea, New Caledonia, 12 weeks after it began. CFC-11 (CCl3F), CFC-12 (CCl2F2), CFC-113 (CCl2FCClF2), methyl chloroform (CH3CCl3), carbon tetrachloride (CCl4), nitrous oxide (N2O) and HCFC-22 (CHClF2) were measured in the air and surface waters of the Pacific Ocean between 55 deg N and 22 deg S during the late summer and early fall of 1992. Atmospheric measurements of all gases agreed well with results from NOAA fixed stations at similar latitudes. References: OAXTC 92: OCEAN / ATMOSPHERE EXCHANGE OF TRACE COMPOUNDS 1992, Oceanic Measurements of HCFC-22, CFC-11, CFC-12, CFC-113, CH3CCl3, CCl4, and N2O in the Marine air and Surface Waters of the West Pacific Ocean (03. August to 21 October 1992), J.M. Lobert, J.H. Butler, T.J. Baring, R.C. Myers, S.A. Montzka, J.W. Elkins NOAA Technical Memorandum ERL CMDL-9, July 1995. Contacts: James H. Butler +1 303 497 6898 (tel) 6290 (fax) jbutler@cmdl.noaa.gov Jurgen M. Lobert +1 303 497 7006 (tel) 7850 (fax) jurgen@fiji.ucsd.edu OAXTC 92 Data are available on the NOAA/CMDL/NOAH anonymous FTP account "ftp://ftp.cmdl.noaa.gov/noah/ocean/oaxtc_92" For more information see: "http://www.cmdl.noaa.gov/noah" and "http://www.cmdl.noaa.gov/noah/ocean/ocean.html"