New research by an international team of scientists explains what's behind a stalled trend in Arctic Ocean sea ice loss since 2007. The findings indicate that stronger declines in sea ice will occur when an atmospheric feature known as the Arctic dipole reverses itself in its recurring cycle. The many environmental responses to the Arctic dipole are described in a recent article. This analysis helps explain how North Atlantic water influences Arctic Ocean climate. Scientists call it Atlantification.
New research by an international team of scientists explains what's behind a stalled trend in Arctic Ocean sea ice loss since 2007. The findings indicate that stronger declines in sea ice will occur when an atmospheric feature known as the Arctic dipole reverses itself in its recurring cycle.
Co-authors include Andrey V. Pnyushkov, research assistant professor at the International Arctic Research Center; Uma S. Bhatt, atmospheric sciences professor at the UAF Geophysical Institute and UAF College of Natural Science and Mathematics; and researchers from Massachusetts, Washington state, Norway, and Germany.
In the Arctic dipole's present"positive" regime, which scientists say has been in place since 2007, high pressure is centered over the Canadian sector of the Arctic and produces clockwise winds. Low pressure is centered over the Siberian Arctic and features counterclockwise winds.This wind pattern drives upper ocean currents, with year-round effects on regional air temperatures, atmosphere-ice-ocean heat exchanges, sea-ice drift and exports, and ecological consequences.
The new research refers to these alternating changes in the Fram Strait and the Barents Sea as a"switchgear mechanism" caused by the Arctic dipole regimes.
Australia Latest News, Australia Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
New research explains 'Atlantification' of the Arctic OceanNew research by an international team of scientists explains what's behind a stalled trend in Arctic Ocean sea ice loss since 2007. The findings indicate that stronger declines in sea ice will occur when an atmospheric feature known as the Arctic dipole reverses itself in its recurring cycle.
Read more »
Arctic sea ice may melt faster in coming years due to shifting windsWinds pushing Atlantic Ocean water into the Arctic control sea ice loss
Read more »
Montgomery County jail undergoing renovationsRenovations include new cell blocks, a new kitchen and a new laundry room.
Read more »
Arctic soil methane consumption may be larger than previously thought and increases in a drier climateArctic wetlands are known emitters of the strong greenhouse gas methane (CH4). Well-drained soils on the other hand remove methane from the atmosphere. In the Arctic and boreal biomes, well drained upland soils with a high potential for atmospheric methane consumption cover more than 80% of the land area. Despite the large upland coverage and their potential importance for methane uptake, the underlying mechanisms, environmental controls and even the magnitude of Arctic soil methane uptake are poorly understood.
Read more »
'The View' gets a new set — and a new table — for season 27Whoopi Goldberg will moderate 'The View' season 27 from a new set and table — plus, see EW's exclusive first look at the cohosts' new cast photo.
Read more »
Hammer Horror Has a New Owner, New Slate of Movies to Be RevealedDracula and The Mummy studio Hammer Film Productions finds a new owner in John Gore, plans for a brand-new slate of movies.
Read more »