Sentences with phrase «poleward expansion»

"Poleward expansion" refers to the phenomenon of something moving or spreading towards the Earth's poles, the points located at the top and bottom of the planet. It implies things like plants, animals, or weather patterns extending their range or becoming more common in regions closer to the poles than where they would usually be found. Full definition
There is evidence in satellite and radiosonde data and in observational data for poleward expansion of the tropical circulation by as much as a few degrees of latitude since the 1970s [34]--[35], but natural variability may have contributed to that expansion [36].
«If you find wet get wetter, dry get drier, occurring increasingly in tandem with poleward expansion, there's just almost no way that can happen naturally,» Marvel said.
There is evidence in satellite and radiosonde data and in observational data for poleward expansion of the tropical circulation by as much as a few degrees of latitude since the 1970s [34]--[35], but natural variability may have contributed to that expansion [36].
«We think, but have not yet been able to establish, that this is connected to independently observed poleward expansion of the Hadley circulation,» Emanuel says, referring to a large - scale pattern of global winds, which in recent years has also moved further poleward.
A poleward expansion of the tropics is likely to bring even drier conditions to these heavily populated regions, but may bring increased moisture to other areas.
Their study found that the increase in average intensity and in the poleward expansion occurred regardless of where the greatest change in temperatures occurred in the Pliocene.
Poleward expansion of the tropics also appears to be linked to an expansion in the range of tropical cyclones, potentially bringing weather events to regions which previously have not encountered them.
Climate models predict expanding Hadley Cells as the climate warms, meaning a poleward expansion of the subtropical desert zones.
As a recent study led by NOAA noted, «A poleward expansion of the tropics is likely to bring even drier conditions to» the U.S. Southwest, Mexico, Australia and parts of Africa and South America.»
For example, there is an expansion of the subtropical dry zones associated with the poleward expansion of the Hadley circulation with global warming (Lu et al. 2009).
The Hadley cell shows a clear signal of poleward expansion, while poleward movement is present but less clear in the jet stream and mid-latitude storm tracks.
Poleward expansion of mangroves is a threshold response to decreased frequency of extreme cold events
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