Adaptive sampling of upwelling eddies at the long-term ecosystem observatory

Oscar Schofield
Rutgers University

Friday, April 16, 1999
12:00 Noon—Pacific Forum (Video Conference to UC Berkeley)

sschofield.gif (26488 bytes)Off the coast of New Jersey, a distributed network of real-time coupled physical/bio-optical observation systems (LEO-15) is being constructed to span the scales from the continental shelf to the near-shore. The system (satellites, aircraft, buoys, radar, autonomous nodes, ships, and autonomous underwater vehicles) are being integrated through acoustic, radio, and satellite communications for adaptive sampling based on real-time observations and coupled data-assimilative physical/bio-optical model forecasts. The goal is to synoptically define the physical forcing of coastal biological productivity. Currently, the phenomenological focus for LEO-15 is on the impact of episodic upwelling on coastal optical properties. Off the southern coast of New Jersey, upwelled water evolves into an along-shore line of three recurrent upwelling centers that are co-located with historical regions of low dissolved oxygen. The upwelling eddies are clearly visible in ocean AVHRR, RADARSAT, and SeaWiFs color imagery. The optical features of the upwelled waters are dominated by inorganic particles during the earliest phases of the upwelling cycle, but later are dominated by particulate organic carbon associated with diatoms and dinoflagellates.

This seminar will focus on the operation of the LEO-15 network and results from the ONR/NOPP sponsored 1998 Coastal Predictive Skill Experiments during the summer upwelling season.

Next: Satellite remote sensing- A tool for biogeochemical insight

Last updated: December 19, 2000