Sentences with phrase «summer global sea ice extent»

There has been a long - term downward trend in summer global sea ice extent, though the trend is less clear in the winter, reflecting the fact that the Arctic shows a clearer long - term trend than the Antarctic.

Not exact matches

The global mean temperature rise of less than 1 degree C in the past century does not seem like much, but it is associated with a winter temperature rise of 3 to 4 degrees C over most of the Arctic in the past 20 years, unprecedented loss of ice from all the tropical glaciers, a decrease of 15 to 20 % in late summer sea ice extent, rising sealevel, and a host of other measured signs of anomalous and rapid climate change.

«The very low summer extent of Arctic sea ice that has been observed in recent years is often casually interpreted as an early - warning sign of anthropogenic global warming.

«Arctic Ice in «Death Spiral» with additional heating due to global warming, the extent of sea ice cover has gotten smaller and smaller over the summers since the 198Ice in «Death Spiral» with additional heating due to global warming, the extent of sea ice cover has gotten smaller and smaller over the summers since the 198ice cover has gotten smaller and smaller over the summers since the 1980s.

In fact, it's pretty clear that the end - summer sea ice extent at one Pole doesn't mean anything WRT global temperature, especially if there is an opposite trend at the other Pole.

For example, additional evidence of a warming trend can be found in the dramatic decrease in the extent of Arctic sea ice at its summer minimum (which occurs in September), decrease in spring snow cover in the Northern Hemisphere, increases in the global average upper ocean (upper 700 m or 2300 feet) heat content (shown relative to the 1955 — 2006 average), and in sea - level rise.