Monterey Bay Aquarium Research Institute
2004 projects
Upper ocean biogeochemistry

Southern Ocean iron enrichment experiment

Project Manager: Francisco Chavez
Lead Scientists: Francisco Chavez/Ken Johnson

The Monterey Bay Aquarium Research Institute (MBARI) provided instrumented drifter packages and associated support for real-time tracking and in-water measurement (physical, chemical and bio-optical) in support of the Southern Ocean iron enrichment experiment (SOFeX). Continuous measurements of dissolvable iron concentrations were taken while the ship was underway in the patch. 

For this year, as with Iron-Ex II, we will provide three drifters for each experiment with two drifters typically deployed at all times. At least one drifter will be located in the center of the iron-enriched patch, with a second drifter located outside of the fertilized area, serving as a control point. A third drifter will be maintained for backup and deployed as needed. The within patch drifters will track the fertilized patch, transmit their position information to the ship, and through the use of associated software developed at MBARI, enable the ship to optimally deploy and sample the patch. The drifters are equipped with instrumentation to measure a suite of scientific parameters related to water chemistry and phytoplankton physiology. 

Last updated: Feb. 05, 2009