ALOHA Wirewalkers

The ALOHA Wirewalker project is a collection of autonomous oceanographic observations from the North Pacific Ocean that are obtained with two wave-powered drifting profilers (Wirewalker™, Del Mar Oceanographic) since June 2017. The autonomous profilers are deployed in the open ocean where they move vertically along a wire that is suspended between a float at the sea surface and a weight placed at 400 m depth. The system horizontal displacement follows the ocean currents. These observations allow the investigation of the diel ecosystem variability and the study of the formation and maintenance of relatively thin layers of plankton accumulation thanks to the high resolution both vertically (~0.1 m) and temporally (1/6 s).

The Wirewalkers are deployed during expeditions of the Hawaii Ocean Time-series (HOT) where they complement shipboard measurements of the physical and biogeochemical characteristics of the ocean. Additionally, the Wirewalkers are deployed during the expeditions organized by the Simons Collaboration on Ocean Processes and Ecology ( SCOPE).

Measurements collected within the ALOHA Wirewalker project have been processed using a consistent procedure in order to facilitate the joint analysis of the observations from different deployments. The ALOHA Wirewalker dataset from June 2017 to February 2020 is now public and accessible as doi:10.5281/zenodo.3750468.

This project is supported by the Simons Foundation