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A new study by an international team of researchers, using ocean sediment chemistry, has highlighted a widespread picture of changes in circulation in the ocean. the Atlantic badociated with rapid climate change.
The new integrated dataset, published today in the journal Nature Communications provides new insights into the interactions of ice melt, ocean circulation and climate change, with potential implications for long-term changes. global climate change systems.
Dr. Hong Chin Ng, from the School of Earth Sciences of the University of Bristol, is the principal author.
He said: "Rapid and significant changes in climate, carbon dioxide and ice sheet volume have occurred.
"Changes in the circulation of the Atlantic Ocean are thought to have played an important role in the conduct of these climatic events, but direct evidence has been difficult to find."
"In this study, we badyzed radioactive elements in ocean sediments to provide a much better constrained picture of the strength of ocean circulation in the past, and thus its relationship to ice cap timing and climate change. during the last major deglaciation. "
together results from the sediment cores on the other side of the l & # 39; Atlantic and revealed changes in the circulation in the Atlantic that coincide with the weather and rapid climatic transitions during the deglacial period.
Dr. Ng added: "This is the first time that spatially consistent and extensive observations (from the tropics to the high latitudes) have been collected on a common age scale." We found that the ocean slowed its circulation in two stages.
The results highlight the role of ice melt in slowing ocean circulation
. due to the continued accelerated melting of ice in the northern high latitudes badociated with climate change.
The new data can be used to test the response of climate models to changes in ice melt and ocean circulation.
More information:
Hong Chin Ng et al. Coherent deglacial changes in the circulation of the Western Atlantic Ocean, Nature Communications (2018). DOI: 10.1038 / s41467-018-05312-3
A new study by an international team of researchers, using ocean sediment chemistry, has highlighted a widespread picture of changes in the Atlantic circulation badociated with rapid climate change in the past.
The new integrated dataset, published today in the journal Nature Communications provides new insights into the interactions of ice melt, ocean circulation, and climate change. Global climate change systems.
Dr. Hong Chin Ng, from the School of Earth Sciences of the University of Bristol, is the principal author.
He said: "Rapid and significant changes in climate, carbon dioxide and ice sheet volume have occurred.
"It is thought that changes in the circulation of the Atlantic Ocean have played an important role in the conduct of these climatic events, but it is difficult to find direct evidence."
"In this study, we badyzed radioactive elements in ocean sediments to provide a much better constrained picture of the strength of ocean circulation in the past, and thus its relationship to ice cap timing and climate change. during the last major deglaciation. "
The whole results from cores of sediment from the I & # 39; other side of the Atlantic and revealed changes in traffic in the US. Atlantic that coincide with rapid climatic transitions during the deglacial period.
Dr. Ng added: "This is the first time that spatially consistent and extensive observations (from the tropics to the high latitudes) have been collected on a common age scale." We found that the ocean slowed its circulation in two stages.
The results highlight the role of ice melt in slowing ocean circulation
. due to the continued accelerated melting of ice in the northern high latitudes badociated with climate change.
The new data can be used to test the response of climate models to changes in ice melt and ocean circulation.
More information:
Hong Chin Ng et al. Coherent deglacial changes in the circulation of the Western Atlantic Ocean, Nature Communications (2018). DOI: 10.1038 / s41467-018-05312-3
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