Australian, Belgian and New Zealand scientists have expanded our understanding of the way phyoplankton take up scarce iron in the ocean – a process that regulates ocean food chains from the bottom up and helps remove up to 40 per cent of carbon dioxide (CO2) from the atmosphere.
Research published recently in the Proceedings of the National Academy of Science explores the relationship between iron, which limits primary productivity in vast regions of the ocean, and its uptake by phytoplankton species.
New melt record for Greenland ice sheet
CCNY's Marco Tedesco says 'exceptional' season stretched up to 50 days longer than averageNew research shows that 2010 set new records for the melting of the Greenland Ice Sheet, expected to be a major contributor to projected sea level rises in coming decades.
"This past melt season was exceptional, with melting in some areas stretching up to 50 days longer than average," said Dr. Marco Tedesco, director of the Cryospheric Processes Laboratory at The City College of New York (CCNY – CUNY), who is leading a project studying variables that affect ice sheet melting.
Loss of reflectivity in the Arctic doubles estimate of climate models
A new analysis of the Northern Hemisphere's "albedo feedback" over a 30-year period concludes that the region's loss of reflectivity due to snow and sea ice decline is more than double what state-of-the-art climate models estimate.
The findings are important, researchers say, because they suggest that Arctic warming amplified by the loss of reflectivity could be even more significant than previously thought.
The findings are important, researchers say, because they suggest that Arctic warming amplified by the loss of reflectivity could be even more significant than previously thought.
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