Integrated Nutrient Observatory
Overview: Over the past several years, NERACOOS and its partners have tested and deployed a prototype automated nutrient monitoring observatory in the coastal and estuarine waters of the Northeast. The goal of this effort was to demonstrate the delivery of high frequency nutrient data to scientists, managers, and policy makers.
An award from the Integrated Ocean Observing System (IOOS) Ocean Techology Transition (OTT) program has funded this project. The nutrient observatory is currently transitioning into an operational service and is being supported but IOOS and the Environmental Protection Agency (EPA).
Below are the tentative deployement dates of nutrient sensors throughout the NERACOOS Region.
- Narragansett Bay Deployment, Narragansett Bay Commission
- Long Island Sound Deployment, University of Connecticut
- Great Bay Re-Deployment, University of New Hampshire
- Gulf of Maine Buoy E, I, M & N, University of Maine
- Great Bay Deployment, University of New Hampshire
- Great Bay Estuary Stakeholder workshop
- Buoy E and I Deployment, University of Maine
- Long Island Sound Deployment, University of Connecticut
- Buoy M and N Deployement, University of Maine
Nutrient Sensor Information:
NERACOOS will deploy several automated nutrient sensors that will be integrated into our buoy systems and will deliver nutrient readings several times a day.
- Designed for unattended long-term moored operations, the Cycle NH4 is one of WET Labs' line of single analyte chemical sensors.
- This nitrate sensor is a chemical-free solution for autonomous monitoring of nitrogen-based nutrient concentrations in ocean, estuarine and high turbidity freshwater environments.
- Designed for unattended long-term moored operations, the Cycle PO4 is the first of WET Labs' line of single analyte chemical sensors.
Integrated Nutrient Observatory Webinar Series - 2019
Data, Successes, and Challenges
March 15, 2019
"Transitioning State-of-the-Art Nutrient Sensing Technology to Develop an Operational Nutrient Observatory for NERACOOS"
Presented by Andrew Barnard and Adam Dutton, Sea-Bird Scientific
Sea-Bird Scientific is the world's largest developer and manufacturer of products for the measurement of parameters for oceanographic research and environmental water quality monitoring in natural waters. Since 2010, Sea-Bird Scientific has worked with scientists to further the understanding of biogeochemistry with nutrient sensors to measure otho-reactive phosphate with the Cycle-PO4 and the Submersible Ultra-violet Nitrate Analyzer (SUNA). In 2016, Sea-Bird Scientific made efforts to re-engineer improvements into the SUNAv2 and update the design of the phosphate auto-analyzer releasing the HydroCycle-PO4. Together with NERACOOS, lessons learned were applied to improve deployment longevity and service regimens through introducing an onboard QA/QC flagging system in HydroCycle to help operational monitors react to the possible problems with the data quality that occur in remote sensing.
"Lessons Learned from Operating and Maintaining Automated Nutrient Sensors on Operational Buoy Systems in the Northeast"
Presented by Nutrient Sensor Operators: Tom Gregory, University of New Hampshire; Kay Howard-Strobel, University of Connecticut; Dave Townsend, University of Maine; and Heather Stoffel, University of Rhode Island
Integrated Nutrient Observatory sensor operators will discuss some of the challenges, successes, and lessons learned from the project including integrating sensors into operational moorings, operating and maintaining sensors in estuarine and coastal environments, and conducting QA/QC on the data.
"NERACOOS Integrated Nutrient Observatory Data Access"
Presented by Riley Young-Morse, Gulf of Maine Research Institute
This presentation demonstrates how to access, plot, and download data from the Integrated Nutrient Observatory project using the NERACOOS ERDDAP system.
Great Bay and Narragansett Bay
March 7, 2019
"Nutrient Variability in Great Bay, NH"
Presented by Tom Gregory and Joe Salisbury, University of New Hampshire
In this presentation, Tom and Joe will focus on data and results from the NERACOOS Integrated Nutrient Observatory project. Sea-Bird Scientific nitrate and phosphate sensors were deployed on the Great Bay buoy during ice-free months over the past several years. These data show a local annual cycle and springtime nutrient draw-down and regeneration as winter approaches. Variability imposed by episodic events such as high discharge and edpisodic mixing during storm periods was also observed. Further, data from these sensors can be used with ancillary temperature, salinity, and oxygen data to diagnose phytoplankton behavior. Future work includes attribution of high nutrient events to processes including those influences by human activity.
"Nutrient Monitoring in Narragansett Bay"
Presented by Heather Stoffel, University of Rhode Island
Rhode Island had been working on Nitrogen reductions over the past 10+ years. With reductions reaching the 50% reduction goals, monitoring nutrients and changes in environmental conditions is an integral part of the assessment process. The Narragansett Bay Fixed-Site Monitoring Network (NBFSMN) is a key program in providing water quality data and analyses to coastal managers as part of this process. This talk focuses on how continuous monitoring of nitrate, using SUNA, can help to improve scientists understanding of water quality within Upper Narragansett Bay.
Gulf of Maine and Long Island Sound
February 28, 2018
"Nutrient Dynamics in the Gulf of Maine: New Insights Gained via Moored SUNA Nitrate Sensors"
Presented by: Dave Townsend, University of Maine
In this presentation Dave reviewed the current understanding of the basic workings of water mass and nutrient fluxes to the Gulf of Maine, highlighting recent observations of fluctuating pulses of difference water masses from outside the Gulf of Maine and their accompanying nutrient loads, as revealed by moored SUNA nitrate sensors together with other data sources.
"Initial Observations of Nitrate and Phosphate from Western Long Island Sound"
Presented by: Kay Howard-Strobel, University of Connecticut
High frequency time series of nitrate and phosphate concentration data collected during the summers of 2017 and 2018 at the Western Long Island Sound buoy station are presented along with other water quality characteristics. Kay will discuss methodology, implications for process interactions, and petential use in water management decisions.
Great Bay Stakeholder Workshop - 2015
On May 26, 2015 NERACOOS hosted a workshop in Greenland, New Hampshire for local stakeholders. The goal of the workshop was to inform stakeholders about the NERACOOS Integrated Nutrient Observatory project and specifically the deployment of nutrient sensors in Great Bay, as well as to discuss their potential use of the data.
Joe Salisbury, University of New Hampshire
"Great Bay Oceanography and Nutrient Dynamics"
Ru Morrison and Cassie Stymiest, NERACOOS
"NERACOOS and Integrated Nutrient Observatory Overview"
Ted Diers and Steve Couture, NH Department of Environmental Services
"Great Bay Water Quality Management"
Corey Koch, Sea-Bird Scientific
"Overview of Automated Nutrient Sensors"