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Latest Atlantic Multidecadal Oscillation Stories

Slowdown Of Global Warming In Northern Hemisphere
2014-04-08 13:44:55

By A'ndrea Elyse Messer, Penn State The recent slowdown in the warming rate of the Northern Hemisphere may be a result of internal variability of the Atlantic Multidecadal Oscillation -- a natural phenomenon related to sea surface temperatures, according to Penn State researchers. "Some researchers have in the past attributed a portion of Northern Hemispheric warming to a warm phase of the AMO," said Michael E. Mann, Distinguished Professor of Meteorology. "The true AMO signal,...

2014-04-03 11:33:03

The extreme cold weather observed across Europe and the east coast of the US in recent winters could be partly down to natural, long-term variations in sea surface temperatures, according to a new study published today. Researchers from the University of California Irvine have shown that a phenomenon known as the Atlantic Multidecadal Oscillation (AMO)—a natural pattern of variation in North Atlantic sea surface temperatures that switches between a positive and negative phase every 60-70...

Atlantic Ocean Dances With The Sun And Volcanoes
2014-04-01 09:06:11

By Christina Troelsen, Aarhus University Natural fluctuations in the ocean temperature in the North Atlantic have a significant impact on the climate in the northern hemisphere. These fluctuations are the result of a complex dance between the forces of nature, but researchers at Aarhus University can now show that solar activity and the impact of volcanic eruptions have led this dance during the last two centuries. Imagine a ballroom in which two dancers apparently keep in time to...

Climate Change In Antarctica Partially Driven By Warming In The North And Tropical Atlantic Ocean
2014-01-23 04:26:22

April Flowers for redOrbit.com - Your Universe Online A team of New York University climatologists has concluded that the gradual warming of the North and Tropical Atlantic Ocean is adding to climate change in Antarctica. The conclusions rely on more than three decades of atmospheric data and reveal new ways in which Antarctic climate change is affected by distant regional conditions. "Our findings reveal a previously unknown—and surprising—force behind climate change that is...

Natural Climate Swings Contribute More To Increased Monsoon Rainfall
2013-03-21 10:52:49

University of Hawaii “‘ SOEST Natural swings in the climate have significantly intensified Northern Hemisphere monsoon rainfall, showing that these swings must be taken into account for climate predictions in the coming decades. The findings are published in the March 18 online publication of the Proceedings of the National Academy of Sciences. Monsoon rainfall in the Northern Hemisphere impacts about 60% of the World population in Southeast Asia, West Africa and North...

2010-10-01 14:45:12

'A recipe for a perfect drought' The convergence in the coming year of three cyclical conditions affecting ocean temperatures and weather is likely to create unprecedented challenges for states that depend on water from the Colorado River, a new UCLA study suggests. "If I were concocting a recipe for a perfect drought, this would be it," said Glen MacDonald, co-author of the study and director of UCLA's Institute of the Environment and Sustainability. Along with a former graduate...

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2009-04-17 07:15:00

The kinds of devastating droughts that claimed the lives of more than 100,000 people in Africa's Sahel region in the 1960's and 70's may represent a normal natural occurrence rather than an anomaly, according to new research.  What's more, they may be but a foretaste of the catastrophic "Ëœmegadroughts' that have periodically rocked the region for thousands of year. The dry spells that have brought well-documented and well-publicized disaster to millions of Africans in the last...

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2008-05-01 16:20:00

Scientists at Germany's Kiel University predict the Earth's temperature will stay roughly the same in the coming decade as the planet's natural climate cycle enters a cooling phase.  The researchers developed computer models for their analysis, which suggest the cooling phase will counter warming from greenhouse gas emissions.But thereafter, the researchers expect temperatures to begin rising quickly by about 2020.The forecast centers around the ocean's natural temperature cycles, called...

2006-08-15 16:09:48

By Jim Loney MIAMI (Reuters) - Global warming is affecting the intensity of Atlantic hurricanes, according to a new study by a university professor in Florida who says his research provides the first direct link between climate change and storm strength. James Elsner of Florida State University said he set out to perform a statistical analysis of the two theories in a raging debate within the scientific community: Whether recent intense hurricanes are the result of climate change or...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'