Sentences with phrase «weather over the continents»

This study is the latest in a growing body of research that suggests dwindling sea ice and snow cover in the polar regions may be altering the weather over the continents of the Northern Hemisphere.

Some scientific indicators suggest a January 2016 weakening of the stratospheric polar vortex, increasing the chance for severe late winter weather over the continents.

Not exact matches

While the Aleutian Low pressure system sits over Southcentral Alaska in the winter, it can impact weather across the North American continent.

In late 2010 and early 2011, the continent Down Under received about twice its normal complement of rain, thanks in large part to unusually warm sea - surface temperatures just north of Australia and a particularly strong La Niña — in essence, combining a source of warm humid air with the weather patterns that steered the moisture over the continent where it condensed and fell as precipitation.

A new study by scientists at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, and the University of California, Irvine, shows that while ice sheets and glaciers continue to melt, changes in weather and climate over the past decade have caused Earth's continents to soak up and store an extra 3.2 trillion tons of water in soils, lakes and underground aquifers, temporarily slowing the rate of sea level rise by about 20 percent.

The loss of Arctic summer sea ice and the rapid warming of the continent could be altering the jet stream [3]-- and thus weather patterns — over North America, Europe and Russia, increasing the likelihood of extreme weather events and driving winter storms south.

This report discusses our current understanding of the mechanisms that link declines in Arctic sea ice cover, loss of high - latitude snow cover, changes in Arctic - region energy fluxes, atmospheric circulation patterns, and the occurrence of extreme weather events; possible implications of more severe loss of summer Arctic sea ice upon weather patterns at lower latitudes; major gaps in our understanding, and observational and / or modeling efforts that are needed to fill those gaps; and current opportunities and limitations for using Arctic sea ice predictions to assess the risk of temperature / precipitation anomalies and extreme weather events over northern continents.

As North America is the only broad continent that stretches from high to low latitudes without an east - west mountain chain, the intersections of cold and hot air masses will continue to occur over the U.S. and Canada meaning severe weather will continue and will likely intensify as warming occurs.

It is one thing to run a weather prediction model over a continent, test its predictability over the next 1 to seven days, do this every day in parallel over 40 years.