Oceanic Remote Chemical Analyzer

ORCA Project Overview

Current conditions:
Minimum Oxygen Levels:
Twanoh: near-hypoxic.
Carr Inlet: moderate.
Point Wells: moderate.

Surface pH Levels
Carr Inlet: Jan 19 2017 pH: 7.73886
Pt Wells: Dec 22 2016 pH: 7.52402

Twanoh pCO2 data

Dabob Bay pCO2 data

The Oceanic Remote Chemical Analyzer (ORCA) is an autonomous moored profiling system providing real-time data streams of water and atmospheric conditions. It consists of a profiling underwater sensor package with a variety of chemical and optical sensors, and a surface mounted weather station, solar power system, winch, and custom computer and software package equipped with WIFI/cellular communication.

Since its deployment in 2000, the ORCA system has provided a near-continual stream of high-resolution water quality data from locations in the Puget Sound, Washington State. There are currently 6 mooring systems deployed, spread throughout Puget Sound and Hood Canal.