1.0 Introduction

The goals of the Tropical Oceans-Global Atmosphere research program (TOGA) as stated by the World Climate Research Program were these:

In order to achieve these goals, a strategy of large-scale, long-term monitoring of the upper ocean and atmosphere, intensive process-oriented studies and modeling was developed (National Academy of Sciences, 1986). A number of regional process experiments were envisioned with the goal of understanding the dynamics and thermodynamics of the oceanic mixed layer (National Academy of Sciences, 1983). Specifically, a western Pacific process experiment was recommended because of the importance of understanding the warm pool.

The major recommendation of the U.S. TOGA Workshop on Western Pacific Air-Sea Interaction was that the scientific questions raised at the workshop about the warm pool system required a substantial modeling and observational effort to answer, and an intensive process experiment (Coupled Ocean Atmosphere Response Experiment: COARE) was outlined (Lukas and Webster, 1988; Webster and Lukas, 1992). The goals of COARE are to describe and understand these processes:

COARE was designed to observe, and ultimately model, the variability of the coupled ocean-atmosphere system in the western equatorial Pacific on time scales of minutes to years and over space scales of centimeters to thousands of kilometers. A fundamental aspect of the strategy of COARE was to tie the relatively short duration, intensive observations into the long-term, large-scale datasets being gathered by TOGA scientists. Thus, certain elements of COARE were designed to be kept in place for several years. These make up the enhanced monitoring component of COARE, which included observations reported here.

As a part of the enhanced monitoring for the TOGA-COARE, deployments and maintenance of an array of thermistor chain and conductivity moorings with meteorological packages were made in three cruises conducted during 1992-94 (EQ-1, EQ-2, EQ-3) on board the R/V Moana Wave. CTD (conductivity, temperature, depth) measurements were made during these cruises to help calibrate the moorings and to further define the scales of temperature and salinity variability within the array. Current profile measurements, meteorological observations, and continuous near-surface temperature and salinity observations were also made during these cruises. The major purposes of these expeditions were these:

In this report, the data acquired during the mooring maintenance cruises are described. These include CTD profiles, salinity from discrete water samples, acoustic Doppler current profiler (ADCP), meteorology, thermosalinograph sampling and expendable bathythermograph (XBT) profiles. Other observations obtained by bow-mounted sensors of temperature, salinity and velocity fluctuation, free rising profiling of temperature, salinity and velocity fluctuation, and mooring data will be described separately in other data reports.
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