XBT - NOAA's Atlantic Oceanographic and Meteorological Laboratory

New Mapping Method Uses Sustained Observations to Estimate AMOC at 22.5°S

AOML Communications — Thu, 25 Jan 2024 16:58:33 +0000

Changes in the Atlantic Meridional Overturning Circulation (AMOC) and its transport of heat can affect climate and weather patterns, regional sea levels, and ecosystems. A new study led by Ivenis Pita, a University of Miami PhD student working at NOAA’s Atlantic Oceanographic and Meteorological Laboratory/ the Cooperative Institute of Marine and Atmospheric Studies (CIMAS), is the first to estimate the AMOC and heat transport at 22.5°S in the South Atlantic, demonstrating the importance of sustained in situ observations to monitor the state of the AMOC.

The post New Mapping Method Uses Sustained Observations to Estimate AMOC at 22.5°S appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

Ocean Observations Collected Ahead of Atlantic Tropical Storm Claudette

AOML Communications — Tue, 06 Jul 2021 20:49:58 +0000

The 2021 hurricane season is off to a busy start with five named storms having already formed in the Atlantic Ocean. Recently, Tropical Storm Claudette travelled directly over three ocean observation platforms, providing key ocean data for the initialization of the ocean component for hurricane forecast models.

The post Ocean Observations Collected Ahead of Atlantic Tropical Storm Claudette appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

AOML Scientists Monitor How Heat and Water are Transported Through the Atlantic Ocean Using Field and Satellite Observations

AOML Communications — Wed, 21 Apr 2021 16:19:09 +0000

In a recently published study, scientists at AOML present 28-year long (1993-2020) estimates of the Atlantic Meridional Overturning Circulation (AMOC) volume and heat transports at multiple latitudes by merging in-situ oceanographic and satellite observations. By combining ocean observations with satellite data, they were able to estimate the AMOC volume and heat transports in near real time. These data can be used to validate ocean models, to detect climate variability, and to investigate their impact on extreme weather events.

The post AOML Scientists Monitor How Heat and Water are Transported Through the Atlantic Ocean Using Field and Satellite Observations appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

Increasing water temperature tied to rapid sea level rise along the U.S. East Coast during 2010-2015

AOML Communications — Mon, 17 Dec 2018 18:59:20 +0000

In a new article accepted for publication in the Geophysical Research Letters, Ricardo Domingues (CIMAS University of Miami & NOAA/AOML) and his coauthors explored the observed rapid sea level rise along the U.S. East Coasts during 2010-2015, which is linked to extensive flooding and "sunny day" flooding (or nuisance flooding) events in large urban areas including Norfolk, Baltimore, Charleston, and Miami, among others.

The post Increasing water temperature tied to rapid sea level rise along the U.S. East Coast during 2010-2015 appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

New Antenna System Design Improves Reliability and Significantly Reduces Cost

AOML Communications — Sun, 13 Mar 2016 01:24:37 +0000

Scientists and engineers from NOAA have successfully designed, built, and tested a new antenna system that dramatically increases data transmission reliability while drastically reducing operating costs. The new Iridium-based transmission system, developed by NOAA’s Atlantic Oceanographic & Meteorological Laboratory (AOML) & the Cooperative Institute for Marine & Atmospheric Studies (CIMAS), has no restrictions on data format or size, allowing data from various ocean and land-based observation platforms to be transmitted more securely and at a fraction of the cost of the older Inmarsat-C platform.

The post New Antenna System Design Improves Reliability and Significantly Reduces Cost appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

New Antenna System Design Improves Reliability and Significantly Reduces Cost

AOML Communications — Thu, 05 Mar 2015 00:34:54 +0000

Scientists and engineers from NOAA have successfully designed, built, and tested a new antenna system that dramatically increases data transmission reliability while drastically reducing operating costs. The new Iridium-based transmission system, developed by NOAA’s Atlantic Oceanographic & Meteorological Laboratory (AOML) & the Cooperative Institute for Marine & Atmospheric Studies (CIMAS), has no restrictions on data format or size, allowing data from various ocean and land-based observation platforms to be transmitted more reliably and at a fraction of the cost of the older Inmarsat-C platform. Since completion, the Iridium system has been adopted on a number of Expendable Bathythermographs (XBTs) observation transects and have been simultaneously tested and implemented in other AOML observing systems.

The post New Antenna System Design Improves Reliability and Significantly Reduces Cost appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

Wind forced variability of the Antarctic Circumpolar Current south of Africa between 1993 and 2010

AOML Communications — Fri, 16 May 2014 14:43:27 +0000

Researchers from PhOD and from the University of Cape Town used temperature data from the AX25 repeat XBT transect (from South Africa to Antarctica) in combination with other hydrographic and satellite observations to report a mechanism by which local winds alter the structure of the Antarctic Circumpolar Current flow south of Africa.

The post Wind forced variability of the Antarctic Circumpolar Current south of Africa between 1993 and 2010 appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.

Relationship between the Off-equatorial Current System and the Tropical Atlantic Variability

AOML Communications — Sat, 15 Jun 2013 17:00:15 +0000

Scientists at PHOD developed a synthetic method, which combines high-density expendable bathythermograph (XBT) temperature data along the AX08 XBT transect (which runs between Cape Town and NYC) with altimetric sea level anomalies, to estimate the variability of the off-equatorial currents, such as the North Equatorial Countercurrent and the North Equatorial Undercurrent, on seasonal to interannual timescales. Understanding how the ocean dynamics is liked to anomalies of temperature and wind-stress in the tropical Atlantic is critical to understand the climate and weather variability in the adjacent continental areas.

The post Relationship between the Off-equatorial Current System and the Tropical Atlantic Variability appeared first on NOAA's Atlantic Oceanographic and Meteorological Laboratory.