Not exact matches
Through satellite images, researchers have observed a steep
decline in the average extent of Arctic sea
ice for every month of the year.
You can see how Arctic sea
ice volume has
declined through the satellite record in the chart below.
Furthermore,
decline in snow cover and sea
ice will tend to amplify regional warming
through snow and
ice - albedo feedback effects (see Glossary and Chapter 9).
This, along with more vulnerable thinner first - year
ice throughout much of the Arctic, suggests a faster than normal
decline through the rest of the melt season.
While a number of natural factors have certainly contributed to the overall
decline in sea
ice, the effects of greenhouse warming are now coming
through loud and clear.»
Animation of changes in average September sea
ice extent from 1979
through 2016 — with noteworthy natural variability and a long - term
decline.
The «hiding the
decline» refers neither to Little
Ice Age (as the Spiked Online version says) nor the recent pause in the upward trend of temperatures, but rather the pasting of current temperature data onto some rather dubious proxy data to continue the hockey stick pattern
through the 20th century.
This increase reflects the relatively slower
decline in
ice extent
through August than what had been projected earlier.
Declining Arctic sea
ice reached a milestone in the summer of 1998 when the
ice pulled back completely from the Arctic coasts of Alaska and Canada, opening up the Northwest passage
through which the diatom may have passed, Reid and colleagues write in their report of the diatom's return published in the journal Global Change Biology in 2007.
Over the past several months, the Arctic Ocean on the opposite side of the world has also seen record - low sea
ice — a new nadir in a decades - long
decline that, climate scientists say, is one of the many fingerprints of humans» hand in warming Earth's atmosphere and oceans
through the burning of fossil fuels.
The data show that Arctic
ice went
through an expansion as dramatic as its subsequent
decline, said Fyfe.
Ocean acidification, rising ocean temperatures,
declining sea
ice, and other environmental changes interact to affect the location and abundance of marine fish, including those that are commercially important, those used as food by other species, and those used for subsistence.16, 17,18,122,19,20,21 These changes have allowed some near - surface fish species such as salmon to expand their ranges northward along the Alaskan coast.124, 125,126 In addition, non-native species are invading Alaskan waters more rapidly, primarily
through ships releasing ballast waters and bringing southerly species to Alaska.5, 127 These species introductions could affect marine ecosystems, including the feeding relationships of fish important to commercial and subsistence fisheries.
Arctic
ice did
decline through 2012, but quickly returned to normal by 2015.
Tangential, but I suspect that even if Arctic
ice declines later in the century, the decision of running ships
through the Arctic will be made by marine insurers, not shippers.
Measured daily air temperatures by the DMI at 80 north latitude
through EVERY summer since 1958 have remained steady between 1958 and 2000, and, in fact, have
declined between 2000 and 2012 — which included record low sea
ice extents in 2007 and 2012.
For example, the Pacific - Arctic Gateway
through the Bering Strait would be an ideal monitoring area because of increased heat and freshwater flow, increased marine mammal migration,
declining sea
ice cover, increased oil and gas exploration, exploratory fisheries in the last decade, and flow of pollutants, especially persistent organic pollutants largely from Asia.
Although high concentrations of sea
ice still remain in the central section of the passage, Howell predicts that this
ice will melt out by September if above normal air temperatures and the rapid rate of
decline observed in July persists
through August.