Posts Tagged ‘Magdalena Andres’
Hot Wash: Pioneer-Adjacent PIES Deployments
RAPID: A Cost-Effective Approach for Characterizing Variability at High Temporal Resolution for Long Duration on the Continental Slope of the Southern Mid-Atlantic Bight
Two popeye data shuttle-enabled current and pressure sensor equipped inverted echo sounders (PDS-PIESs, Figure 1) were successfully deployed on the continental slope east of the U.S. National Science Foundation Ocean Observatories Initiative (OOI) Pioneer Array in the southern Mid-Atlantic Bight in June 2024. Data collected during the 4-year deployments will be shared broadly when PDS pods ascend annually to the sea surface and return data batches via a satellite link.
[media-caption path="https://oceanobservatories.org/wp-content/uploads/2024/06/IMG_8421-scaled.jpg" link="#"]Figure 1. Massachusetts Institute of Technology/Woods Hole Oceanographic Institution (MIT/WHOI) Joint Program students, Ysabel Wang (right, Physical Oceanography) and Will Harris (left, Applied Ocean Science and Engineering) and WHOI technician Brian Hogue (background) preparing a PDS-PIES for deployment. The instrument will measure round trip vertical acoustic travel time with bursts of 16 pings every 10 minutes and near-bottom pressure and current measurements every 30 minutes. The PDSs (orange) are scheduled to rise to the sea surface to return data batches remotely on September 1 in 2024 and yearly thereafter until 2027 with recovery of the PIES (white) planned for 2028.[/media-caption]The scientific motivation is to (1) capture mesoscale variability offshore of the Pioneer Array, (2) capture western excursions of the Gulf Stream North Wall that may influence ocean-shelf exchange, and (3) observe the upper portion of the equatorward-flowing Deep Western Boundary Current where it squeezes under the poleward flowing Gulf Stream. The PDS-PIESs were deployed on the 1000 m isobath 40-km apart to extend the Pioneer Array mooring footprint offshore and to allow comparison with a glider which is running a line (nominally) along the 1000 m isobath (Figure 2).
[media-caption path="https://oceanobservatories.org/wp-content/uploads/2024/06/Screenshot-2024-06-11-at-2.08.19-PM.png" link="#"]Figure 2. Map of PDS-PIESs (red dots, C1: 36° 3.125′ N; 74° 42.365′ W and C2: 35° 42.005′ N; 74° 46.209′ W), Pioneer moorings (yellow dots), and nominal offshore Pioneer glider line (blue). Red curve is time-averaged position of the Gulf Stream core and dotted lines are Jason altimeter tracks. Heavy contours are the 200 and 1000 m isobaths.[/media-caption]Cruise RR2407 was supported through the Office of Naval Research through the National Ocean Partnership Program Global Internal Wave (NGIW) study and provided at sea experiences for four MIT/WHOI Joint Program students and four undergraduates from the University of Massachusetts Dartmouth as part of their Blue Economy Program with WHOI. Many thanks to the National Science Foundation Division of Ocean Sciences for funding the PDS-PIES deployments and to engineer Erran Sousa from the University of Rhode Island who provided emergency shoreside support (on a Saturday!) to walk us through the PDS setups.
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OOI Data Classroom at Sea
Ocean Data Labs researcher Sage Lichtenwalner took his data capabilities to the waves, so to speak, as he shared how Ocean Observatories Initiative (OOI) data can be used in the classroom with researchers and teachers aboard the R/V Neil Armstrong in early January. The OOI is funded by the National Science Foundation to collect ocean observations from five scientifically important sites in both the Atlantic and Pacific and make the data available over the internet for research and education.
Lichtenwalner, a research programmer at Rutgers University, was asked to join the cruise as part of an effort to build partnerships and future opportunities between STEMSEAS (Science, Technology, Engineering and Math Student Experiences Aboard Ships) and several Historically Black Colleges and Universities (HBCUs). The cruise was designed to align with STEMSEAS’ objectives and be both immersive and experiential for 12 participants from ten institutions, including six HCBUs. The idea was for faculty to experience the cruise as students on other STEMSEAS expeditions do, and to take back what they learned from their onboard experiences to share with their students and classes. They traveled from Woods Hole, MA to Pensacola, Fla., from January 3-11, 2023.
Lichtenwalner provided participants with practical, hands-on ways to integrate OOI data into their courses. During the eight-day cruise, Lichtenwalner gave four presentations to the group, including a demonstration about how they can use the OOI Data Labs Manual in their classes. “The OOI Data Labs Manual is an easy, accessible way to use real ocean data to teach oceanographic concepts,” he said. “Educators have found that the real-time nature of OOI data inspires students, making them more engaged with the data because of their timeliness and relevance.”
Lichtenwalner’s presentations were part of a series of talks given by the STEMSEAS team and HBCU participants, which included hands-on activities and resources to build students’ problem-solving and scientific thinking skills. Participants also shared their research and teaching strategies to foster collaborative discussions.
[media-caption path="/wp-content/uploads/2023/01/group-shot.png" link="#"]Spending eight days at sea together provided participants with plenty of hands-on learning about sampling at sea, as well as opportunities to share research and teaching strategies they use when on land.[/media-caption]
Onboard the R/V Neil Armstrong, Dr. Magdalena Andres, a physical oceanographer at Woods Hole Oceanographic Institution and co-Principal Investigator of the PEACH program, which is investigating physical processes that drive exchanges between the shelf and deep ocean at Cape Hatteras, served as chief scientist on the cruise. She put the visiting team to work, helping deploy instruments and make underway measurements as part of the “SWOT Adopt a Crossover Field Campaign—Cape Hatteras.” The project, funded by NASA’s Jet Propulsion Laboratory, falls under the umbrella of the Surface Water Ocean Topography (SWOT) Adopt a Crossover Consortium. Andres is part of a multi-institution research team that has “adopted” the site east of Cape Hatteras near the OOI Mid-Atlantic Bite array site, both to advance the community’s dynamical understanding of this key oceanographic region and to help validate measurements provided by the SWOT satellite which launched in December 2022. “SWOT promises to revolutionize our understanding of earth’s surface water. It’s exciting to have the STEMSEAS, HBCU, and Ocean Data Labs participants working side-by-side with the project’s scientists, engineers, students, and technicians on this forefront of ocean observing,” explained Andres.
[media-caption path="/wp-content/uploads/2023/01/IMG_5670-2-scaled.jpeg" link="#"]Loretta Williams Gurnell (right), founder of the SUPERGirls SHINE Foundation, is learning about atmospheric turbulence with a hands-on demonstration led by Dr. Alex Gonzalez from the Physical Oceanography department at the Woods Hole Oceanographic Institution. Alex is part of the NSF-supported DIYnamics Team, https://diynamics.github.io/pages/about.html, which is working to provide access to affordable materials for geoscience teaching demonstrations.[/media-caption]
While onboard, Andres had the team assist her in deploying current and pressure sensing inverted echo sounders (CPIESs) and XBTs (expendable bathythermographs), as well as collecting measurements with the ship’s CTD (conductivity, temperature, depth) profiler. CTDs measure vertical profiles of conductivity (a proxy for salinity) and temperature. XBTs collect profiles of temperature. CPIESs measure bottom pressure and vertical acoustic travel time data (a proxy for temperature and salinity profiles) and near bottom current measurements (velocity of ocean water). The CPIESs were left in place to collect data over the next 18 months.
In 2024, the OOI Pioneer Array will move to the Mid-Atlantic, not far from where the cruise deployed the CPIES and collected CTD casts. To prepare participants for future potential educational applications of OOI CTDs and other instruments in the area, Lichtenwalner made quick plots of the data collected along the way. “Doing real-time plotting to support operations is actually how I got started in oceanography, so it’s been fun to re-live that experience, while also introducing a new group of professors and educators to the power of using ocean data in real-life and in the classroom.”
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