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Using satellite sensor data and information from local meteorological stations, a transient upwelling event in the Gulf of Nicoya, Costa Rica, has been observed during the period 6-8 March 1997 in coincidence with strong upwelling in the Gulf of Papagayo. Strong north-easterlies funnelled through two mountain passes are responsible for this feature, observed intermittently between November and March.
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Brenes et al. (2003) studied this question.
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