Trace gases in and over the West Pacific and East Indian Oceans during the El Nino-southern oscillation event of 1987: a report of GMCC (geophysical monitoring for climatic change) data collected on the second Soviet-American Gas and Aerosol Experiment (SAGA II)

Abstract

Five trace gases in the surface water and atmosphere of the West Pacific and East Indian Oceans were measured by automated gas chromatography from May through July 1987. The data included more than 1000 measurements each of N/sub 2/O, F11 and F12 in the surface water and in the atmosphere, and about 2000 measurements each of CH/sub 4/ and CO/sub 2/ in the surface water and atmospheric boundary layer of the West Pacific. In addition, over 600 measurements of dissolved N/sub 2/O were obtained from hydrocasts made along the entire 45,000-km cruise track. Data from this cruise are presented here in graphic and tabular form, along with detailed discussions of the methods used in analyzing the samples and reducing the data, and a brief summary of the results and their significance. Also included are results from laboratory tests of a new, automated headspace technique for dissolved N/sub 2/O and laboratory tests of the Weiss equilibrator. Data from the equilibrator tests were used to develop a mathematical model of its performance.