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June 2 - June 23 2003 The first ECOHAB Pacific Northwest cruise took place in June 2003 aboard the R/V Wecoma. The Wecoma left Seattle at 10:00 AM PDT June 2 and returned to Seattle at 10:00 AM June 23. The chief scientist was Barbara Hickey and the cruise leader was Nancy Kachel.
The sequence of weather conditions was almost ideal, allowing a variety of water and plankton conditions to be sampled. Surveys and sampling were performed under strong, persistent upwelling conditions (the first half of the cruise), downwelling conditions (3.5 days only) and then weak upwelling conditions (the last week). Over 250 data profiles were obtained.
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The study included obtaining multi-disciplinary data from a large scale
grid, sampling water properties while following a drifter, deployment
of surface drifters, satellite imagery, and laboratory studies using
water collected at selected sites. Moored arrays were deployed to provide
time series of currents and water properties, including total domoic
acid, plankton assemblages, and Pseudo-nitzschia numbers, from
May to October, bracketing the first two survey cruises.