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Poleward shifts in winter ranges of North American birds.
Gabriel Vecchi, an atmospheric scientist at NO's Geophysical Fluid Dynamics Laboratory, said the researchers could not say with certainty whether increases in greenhouse gases or stratospheric ozone depletion have caused the poleward movement.
The research documents a poleward migration of storm intensity in both the Northern and Southern Hemispheres through an analysis of 30 years of global historical tropical cyclone data.
NOAA said the amount of poleward migration varies by region, but the greatest migration so far has been found in the northern and southern Pacific and South Indian Oceans.
Chapters chart what will happen when 'environmental refugees' travel poleward as southern conditions worsen, consider social and economic upheaval, and analyze measures that can be taken now to assure social structures are maintained.
While natural fluctuations in climate can lead to either intensification or poleward shifts in precipitation, it is very rare for the two effects to occur together naturally.
The number of cyclones moving over northern Europe has increased in winter, suggesting a poleward shift of the storm track (Paciorek et al.
This season coincides with the declining northwestern winds that induce upwelling and the start of a nearshore countercurrent with poleward flow (Lynn & Simpson 1987, Zaitsev et al.
Climate change is causing many plants to migrate poleward in response to changing temperatures.
Unexpectedly, though, it wasn't the continent's biology that most moved me, or its tumbling crevasses of poleward storms.
Scientists say climate change is already visible in sea-level rise, loss of alpine glaciers and snow cover, shrinking Arctic summer sea ice, thawing permafrost, poleward migration of animals and plants and an increase in intense tropical cyclone activity in the North Atlantic.
While the more poleward positioning of the high pressure cores does bring colder air northwards, it also pushes significantly warmer air deep into the temperate climate zone, even to the edges of the polar, frigid, airmass.
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