Shenfu Dong - NOAA's Atlantic Oceanographic and Meteorological Laboratory /tag/shenfu-dong/ Preparing the nation for change by studying the ocean, earth & atmosphere Fri, 19 Apr 2024 13:53:50 +0000 en-US hourly 1 https://wordpress.org/?v=6.5.2 /wp-content/uploads/2018/09/NOAA_logo_512x512-150x150.png Shenfu Dong - NOAA's Atlantic Oceanographic and Meteorological Laboratory /tag/shenfu-dong/ 32 32 The Atlantic Meridional Overturning Circulation is weakening in the deep sea of the North Atlantic Ocean, Study Finds /atlantic-meridional-overturning-circulation-weakening-in-the-deep-sea-of-north-atlantic/ Thu, 18 Apr 2024 14:58:59 +0000 /?p=76120 Just in! A new study, which analyzed mooring observations and hydrographic data, found the Atlantic Meridional Overturning Circulation (AMOC) abyssal limb in the North Atlantic has weakened over the past two decades contributing to sea level rise in the region. 

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]]> New Mapping Method Uses Sustained Observations to Estimate AMOC at 22.5°S /new-mapping-method-uses-sustained-observations-to-estimate-amoc-at-22-5s/ Thu, 25 Jan 2024 16:58:33 +0000 /?p=72090 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. 

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]]> State of the Climate in 2022 Report Released /state-of-the-climate-in-2022-report-released/ Wed, 06 Sep 2023 14:27:44 +0000 /?p=66073 Today, September 6, the 2022 State of the Climate report was released by the American Meteorological Society, showing greenhouse gas concentrations, global sea levels, and ocean heat content reached record highs in 2022. 

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]]> NOAA Scientists Detect a Reshaping of the Meridional Overturning Circulation in the Southern Ocean /noaa-scientists-detect-reshaping-of-the-meridional-overturning-circulation-in-southern-ocean/ Wed, 29 Mar 2023 12:56:10 +0000 /?p=53047 Scientists at NOAA’s Atlantic Oceanographic and Meteorological Laboratory (AOML) have shown that the Global Meridional Overturning Circulation (GMOC), commonly known as the global ocean conveyor belt, has changed significantly in the Southern Ocean since the mid-1970s, with a broadening and strengthening of the upper overturning cell and a contraction and weakening of the lower cell. These changes are attributed to human induced ozone depletion in the Southern Hemisphere stratosphere and increased carbon dioxide in the atmosphere. The study also shows that the changes in the Southern Ocean are slowly advancing into the South Atlantic and Indo-Pacific oceans.

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]]> SAMOC Initiative Advances Understanding of the South Atlantic’s Unique Role in Global Overturning Circulation /samoc-initiative-advances-understanding-of-south-atlantics-role-in-global-circulation/ Mon, 23 Jan 2023 18:57:23 +0000 /?p=47152 Since the inception of the international South Atlantic Meridional Overturning Circulation (SAMOC) initiative in 2007, substantial advances have been made in observing and understanding the South Atlantic component of the Atlantic Meridional Overturning Circulation (AMOC). The goals of the SAMOC initiative are to monitor climatically relevant oceanic fluxes of mass, heat, and freshwater, provide observations to validate and improve numerical models and climate predictions, and understand the impacts of the SAMOC on climate and weather.

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]]> First South Atlantic Meridional Overturning Circulation Project Cruise in Three Years /first-cruise-in-three-years-south-atlantic-meridional-overturning-circulation-project/ Wed, 07 Sep 2022 16:45:49 +0000 /?p=34733 After two weeks at sea, the South Atlantic Meridional Overturning Circulation (SAM) project team completed its first cruise since June 2019! 

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]]> State of the Climate in 2021 Report Released /state-of-the-climate-in-2021-report/ Wed, 31 Aug 2022 17:32:11 +0000 /?p=34336 The State of the Climate in 2021 report was released today by the American Meteorological Society, showing greenhouse gas concentrations, global sea levels, and ocean heat content reached record highs in 2021 despite a La Niña event taking place in the Pacific Ocean.

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]]> New Research Showing Link between Florida Current and Pacific Ocean could Improve Sea Level, Climate Prediction /scientists-at-aoml-detect-new-link-between-florida-current-transport-and-pacific-ocean/ Mon, 07 Mar 2022 19:58:03 +0000 /?p=29293 A recent study by scientists at NOAA’s Atlantic Oceanographic and Meteorological Laboratory (AOML) is the first to demonstrate that El Niño-Southern Oscillation (ENSO) temperature variations in the equatorial Pacific Ocean can help predict Florida Current transport anomalies three months later. The connection between Florida Current transport and ENSO is through ENSO's impact on sea level on the eastern side of the Florida Straits, which plays a dominant role in the Florida Current transport variability on interannual time scales.

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]]> Deep Ocean Warming Continues into the Vema Channel /deep-ocean-warming-continues-into-the-vema-channel/ Wed, 20 Oct 2021 17:03:25 +0000 /?p=26822 In a recent study published in American Geophysical Union (AGU), scientists at NOAA’s Atlantic Oceanographic and Meteorological Laboratory (AOML) contributed to an international study that confirmed warming trends and the possibility of increased rates of warming in one of the deepest channels of the Southwest Atlantic ocean, the Vema Channel.

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]]> AOML Scientists Develop First-ever Daily Estimates of the Heat Transport in the South Atlantic Ocean /first-ever-daily-estimates-of-heat-transport-south-atlantic/ Mon, 03 May 2021 15:33:03 +0000 /?p=21628 In a recent article published in the Journal of Geophysical Research - Oceans, scientists at AOML evaluate the variability of the heat transport in the South Atlantic by developing a new method to measure its changes on a daily basis. This study presents, for the first time, full‐depth, daily measurements of the volume and heat transported by the Meridional Overturning Circulation (MOC) in the South Atlantic at 34.5°S based on direct observations.

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