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Why should we care if all the ice in the arctic seas melt?
Because that will lead to wilder weather in the mid-Northern latitudes - i.e. the US and Europe.
This is a study from Nature Climate Change. showing how the lack of ice has resulted in extreme summer weather in lower latitudes in the Northern Hemisphere.
(Just to clarify, Nature Climate Change is a subjournal of Nature. In other words, the absolute unequivocal consensus among scientists has made the most prestigious multidisciplinary scientific journal in the world develop an entire journal devoted to climate change and AGW, just in case you were confused about the concept of consensus, which some of you seem challenged by).
http://www.nature.com/nclimate/journal/v4/n1/full/nclimate2065.html
Nature Climate Change | Letter
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Extreme summer weather in northern mid-latitudes linked to a vanishing cryosphere
Qiuhong Tang,
Xuejun Zhang
& Jennifer A. Francis
Nature Climate Change 4, 45–50 (2014)
The past decade has seen an exceptional number of unprecedented summer extreme weather events 1, 2, 3, 4 in northern mid-latitudes, along with record declines in both summer Arctic sea ice 5, 6 and snow cover on high-latitude land 7. The underlying mechanisms that link the shrinking cryosphere with summer extreme weather, however, remain unclear 8, 9, 10, 11, 12. Here, we combine satellite observations of early summer snow cover and summer sea-ice extent 13 with atmospheric reanalysis data 14 to demonstrate associations between summer weather patterns in mid-latitudes and losses of snow and sea ice. Results suggest that the atmospheric circulation responds differently to changes in the ice and snow extents, with a stronger response to sea-ice loss, even though its reduction is half as large as that for the snow cover. Atmospheric changes associated with the combined snow/ice reductions reveal widespread upper-level height increases, weaker upper-level zonal winds at high latitudes, a more amplified upper-level pattern, and a general northward shift in the jet stream. More frequent extreme summer heat events over mid-latitude continents are linked with reduced sea ice and snow through these circulation changes.
Of course, this builds upon previous scientific work, including the work showing similar findings.
Evidence linking Arctic amplification to extreme weather in mid-latitudes - Francis - 2012 - Geophysical Research Letters - Wiley Online Library
http://www.nature.com/nature/journal/v464/n7293/full/nature09051.html
Because that will lead to wilder weather in the mid-Northern latitudes - i.e. the US and Europe.
This is a study from Nature Climate Change. showing how the lack of ice has resulted in extreme summer weather in lower latitudes in the Northern Hemisphere.
(Just to clarify, Nature Climate Change is a subjournal of Nature. In other words, the absolute unequivocal consensus among scientists has made the most prestigious multidisciplinary scientific journal in the world develop an entire journal devoted to climate change and AGW, just in case you were confused about the concept of consensus, which some of you seem challenged by).
http://www.nature.com/nclimate/journal/v4/n1/full/nclimate2065.html
Nature Climate Change | Letter
Share/bookmark
Extreme summer weather in northern mid-latitudes linked to a vanishing cryosphere
Qiuhong Tang,
Xuejun Zhang
& Jennifer A. Francis
Nature Climate Change 4, 45–50 (2014)
The past decade has seen an exceptional number of unprecedented summer extreme weather events 1, 2, 3, 4 in northern mid-latitudes, along with record declines in both summer Arctic sea ice 5, 6 and snow cover on high-latitude land 7. The underlying mechanisms that link the shrinking cryosphere with summer extreme weather, however, remain unclear 8, 9, 10, 11, 12. Here, we combine satellite observations of early summer snow cover and summer sea-ice extent 13 with atmospheric reanalysis data 14 to demonstrate associations between summer weather patterns in mid-latitudes and losses of snow and sea ice. Results suggest that the atmospheric circulation responds differently to changes in the ice and snow extents, with a stronger response to sea-ice loss, even though its reduction is half as large as that for the snow cover. Atmospheric changes associated with the combined snow/ice reductions reveal widespread upper-level height increases, weaker upper-level zonal winds at high latitudes, a more amplified upper-level pattern, and a general northward shift in the jet stream. More frequent extreme summer heat events over mid-latitude continents are linked with reduced sea ice and snow through these circulation changes.
Of course, this builds upon previous scientific work, including the work showing similar findings.
Evidence linking Arctic amplification to extreme weather in mid-latitudes - Francis - 2012 - Geophysical Research Letters - Wiley Online Library
http://www.nature.com/nature/journal/v464/n7293/full/nature09051.html
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