Sentences with phrase «if sea ice declines»

«If sea ice declines at the rates projected by the IPCC climate models, and continues to influence emperor penguins as it did in the second half of the 20th century in Terre Adélie, at least two - thirds of the colonies are projected to have declined by greater than 50 % from their current size by 2100,» Dr Jenouvrier said.

Not exact matches

Responses to climate - linked factual questions, such as whether Arctic sea ice area has declined compared with 30 years ago, were politicized as if we were asking for climate - change opinions.

Now to contribute a single event to Global Warming, one has to look at the weather conditions, and if patterns are sighted which are tied to alteration of sea ice decline (our new atmosphere set up), we can connect the dots here too.

It is argued that uncertainty, differences and errors in sea ice model forcing sets complicate the use of models to determine the exact causes of the recently reported decline in Arctic sea ice thickness, but help in the determination of robust features if the models are tuned appropriately against observations.

Figure 1 shows the simulated warming expected in each season if declining sea ice was the major cause of warming.

If they do so by simulating near - average conditions most of the time, they are getting the right answer for the wrong reason, and their predictions of future sea ice decline should be discounted.

If things are so good now, despite declines in summer sea ice, what does that say about the accuracy of their predictions?

If Arctic Sea ice recovers, ocean heat content declines, and near surface temperatures decline over a 10 year period... why then we might actually have something really worth getting excited about.

If dynamic forces led to the Arctic sea ice decline and lead to an Arctic sea ice increase, we should expect a reversion to the mean in temperatures (that is, cooling).

If global warming were affecting sea ice (as climate models predict), then Arctic sea ice should be declining in a less jerky manner, and Antarctic sea ice should not be as steady as it is.

If this is correct, then the fact that the sea ice extent has been «declining since records began» (in 1979) doesn't mean that recent trends are unusual.

Not only that, but if rising CO2 levels were responsible for the decline of sea ice and implied effects on polar bears since 1979 (when CO2 levels were around 340 ppm), why has spring ice extent been so variable since 1989 (when the first big decline occurred) but so little changed overall since then?

Nearly all studies to date published in the peer - reviewed literature agree that summer Arctic sea ice extent is rapidly declining and that, if heat - trapping gas concentrations continue to rise, an essentially ice - free summer Arctic ocean will be realized before mid-century.

If this pattern should be reestablished it would likely lead to a stronger reversal of the decline in arctic sea ice.

Given that the IPCC models significantly underestimate the observed rate of Arctic sea - ice decline (17), a summer ice - loss threshold, if not already passed, may be very close and a transition could occur well within this century.

For example, a 2012 study published in Environmental Research Letters estimated that only 5 to 30 percent of the Arctic sea ice decline from 1979 to 2010 could be attributed to natural cycles, and even more is human - caused if we extend the analysis as far back as the 1950s, because the influences of natural cycles tend to average out to zero over time.

As I said several times previously, if the sea ice minimum were to decline faster than recently observed, then I would rethink my position and conclude that warming is occurring faster than expected.

And if the sea ice continues to decline, a new route connecting international trading partners may emerge — but not without significant repercussions to climate, according to a U.S. and Canadian research team that includes a University of Delaware scientist.

Some people wonder if the reason the sea ice is declining and the planet is warming can be explained by sunspots, which are related to variations in the Sun's energy output over time.

Dark open water does not reflect nearly as much sunlight as ice does, so sometimes people wonder if icebreakers speed up or exacerbate sea ice decline.

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.