AOML oceanographers are participating in a joint research cruise to study the Meridional Overturning Circulation onboard the R/V Endeavor during October 3-20. The team will sail from Fort Lauderdale, FL to collect roughly 55 full-depth conductivity-temperature-depth (CTD) profiles in the Florida Current and the Deep Western Boundary Current east of the Bahamas. The scientists will also work with their partners from the University of Miami to recover, redeploy, and maintain three tall moorings and nine smaller moored instruments during this cruise in support of the NOAA Western Boundary Time Series project and its partner National Science Foundation project.
Underwater gliders observations reveal the importance of salinity effects during passage of Hurricane Gonzalo (2014)
Hurricanes are known to drive the cooling of surface waters as they travel over the ocean, leaving a cooling swath where they pass. The sea surface cooling is mostly caused by mixing forced by the strong winds of the hurricane, which occurs as the mixture of warm surface waters with colder waters that can be as deep as 100 m below the surface.
On October 15, 2015, the scientists, technicians, and engineers involved in the AOML Western Boundary Time Series (WBTS) project marked a milestone with the completion of the 100th successful dropsonde cruise in the Florida Current since the project’s inception in 2000.
In October, AOML scientists, technicians and engineers involved in the Western Boundary Time Series (WBTS) project completed the 100th successful dropsonde cruise in the Florida Current since the project’s inception in 2000. The dropsonde cruises measure volume transport in the Florida Current using an out-of-service telephone cable between Florida and Grand Bahama Island.
The pathways of recently ventilated North Atlantic Deep Water (NADW) are part of the lower limb of the Atlantic Meridional Overturning Circulation (AMOC). In the South Atlantic these pathways have been the subject of discussion for years, mostly due to the lack of observations. Knowledge of the pathways of the AMOC in the South Atlantic is a first order prerequisite for understanding the fluxes of climatically important properties.
On July 14th, 2015, AOML physical oceanographers deployed one of two sea gliders in the Caribbean from the University of Puerto Rico’s R/V La Sultana. The third deployment will continue the project’s mission to gather important data in the Caribbean and Tropical North Atlantic Ocean to help with hurricane intensity forecasting and provide valuable information about the role the ocean plays in tropical cyclone development. What’s new for this mission? For the first time, the gliders will collect ocean current velocity profiles in addition to the real-time temperature, salinity, and oxygen data. AOML scientists also equipped the glider with an improved battery which will allow the glider to record more profile measurements. The second of the two gliders will be deployed in the Tropical North Atlantic in the upcoming weeks.
AOML physical oceanographers and interns conducted a hydrographic survey along the 27th north parallel in the Florida Straits aboard the R/V F.G. Walton Smith on July 14-15 as a component of the Western Boundary Time Series project. These 2-day cruises are designed to calibrate daily estimates and quantify Florida Current volume transport and water mass changes.
If you’ve ever sailed aboard a ship in the coastal ocean, or checked a weather report before going to the beach, then you are one of many millions of people who benefit from ocean observations. NOAA collects ocean observations and weather data to provide mariners with accurate forecasts of seas, as well as coastal forecasts and even regional climate predictions. It takes a lot of effort to maintain observations in all of the ocean basins to support these forecasts, and NOAA certainly can’t do it alone. Partnerships are essential to maintaining a network of free-floating buoys, known as drifters, and NOAA’s latest partner is not your typical research or ocean transportation vessel: the six sailboats and crew currently racing around the world in the Volvo Ocean Race.
AOML physical oceanographers Molly Baringer, Ulises Rivero, Pedro Pena, Andrew Stefanick, Grant Rawson, Jay Hooper and Francis Bringas conducted a Western Boundary Times Series cruise aboard the UNOLS R/V Endeavor on February 15, 2015. Molly Baringer, AOML Deputy Director, served as chief scientist and was supported by additional crew from the University of Puerto Rico. Scientists measured full water column values of salinity, temperature, and oxygen. Scientists also telemetered data from a series of moorings along the 26th north parallel for a joint NOAA and National Science Foundation program designed to monitor the Atlantic meridional overturning circulation current. Francis Bringas also conducted a fall rate experiment that consisted of deploying 200 XBTs from different launch heights.