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What A Week It Was: Apocadocuments from
View By Scenario:
Species Collapse:(6)
Plague/Virus:(2)
Climate Chaos:(6)
Resource Depletion: (2)
Biology Breach:(14)
Recovery:(3)
This Week's Top Ten Very Scary Tags:
contamination  ~ oil issues  ~ health impacts  ~ ecosystem interrelationships  ~ arctic meltdown  ~ capitalist greed  ~ climate impacts  ~ short-term thinking  ~ toxic leak  ~ economic myopia  ~ global warming  



ApocaDocuments (4) matching "arctic meltdown" from this week
[see full week] ~ [see all stories tagged "arctic meltdown"]
Fri, May 28, 2010
from Toronto Star:
Polar bear population could fall by 30 per cent in a year: study
A mathematical analysis for the first time has uncovered the prospect of a sudden, dramatic decline among Canadian polar bears as they starve to death. "This is much, much different. This is not a gradual change," said Dr. Andrew Derocher, one of the world's leading polar bear authorities and co-author of the study. "We're looking at a decrease by 20 or 30 per cent or even much more in a year."....Scientists factored in the shrinking sea ice, which affects how many seals the bears can eat before they hibernate and how easily they can find mates. Without enough food or opportunity, mating is less successful, fewer, less robust cubs are born, and teenage bears spend longer "wandering around trying to find something to eat." ...


Sounds just like my sons.

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Fri, May 28, 2010
from Science (AAAS):
Extensive Methane Venting to the Atmosphere from Sediments of the East Siberian Arctic Shelf
Remobilization to the atmosphere of only a small fraction of the methane held in East Siberian Arctic Shelf (ESAS) sediments could trigger abrupt climate warming, yet it is believed that sub-sea permafrost acts as a lid to keep this shallow methane reservoir in place. Here, we show that more than 5000 at-sea observations of dissolved methane demonstrates that greater than 80 percent of ESAS bottom waters and greater than 50 percent of surface waters are supersaturated with methane regarding to the atmosphere. The current atmospheric venting flux, which is composed of a diffusive component and a gradual ebullition component, is on par with previous estimates of methane venting from the entire World Ocean. Leakage of methane through shallow ESAS waters needs to be considered in interactions between the biogeosphere and a warming Arctic climate. ...


I hear Lindsay Lohan has a new gal-pal.

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Fri, May 28, 2010
from NOAA:
April 2010 warmest ever
April 2010 was characterized by very warm conditions across much of the world. Warmer-than-average conditions during April 2010 were present across much of the world's land areas. The warmest anomalies occurred in southern Asia, northern Africa, the north central and northeastern U.S., Canada, Europe, and parts of northern Russia. Although much of the world's land area was engulfed by warmer-than-average temperatures, cooler-than-average conditions prevailed across Argentina, Mongolia, eastern and southern Russia, and most of China.... Sea surface temperatures (SST) during April 2010 were the warmest on record, with an anomaly of 0.57°C (1.03°F) above the 20th century average. ... Overall, the combined global land and ocean surface temperature anomaly for April 2010 was the warmest April on record since records began in 1880. The previous record was set in 1998. The combined global land and ocean temperature anomaly was 0.76°C (1.37°F) above the 20th century average. ...


April is the cruelest month.

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Wed, May 26, 2010
from BBC:
Polar bears face 'tipping point' due to climate change
Climate change will trigger a dramatic and sudden decline in the number of polar bears, a new study has concluded. The research is the first to directly model how changing climate will affect polar bear reproduction and survival. Based on what is known of polar bear physiology, behaviour and ecology, it predicts pregnancy rates will fall and fewer bears will survive fasting during longer ice-free seasons. These changes will happen suddenly as bears pass a 'tipping point'.... Male polar bears find females by wandering the ice, sniffing bear tracks they come across. If the tracks have been made by a female in mating condition, the male follows the tracks to her. The researchers modelled how this behaviour would change as warming temperatures fragment sea ice. They also modelled the impact on the bears' survival.... "In both cases, the expected changes in reproduction and survival were non-linear," explains Dr Molnar. ...


EX-cellent! That means we don't have to care until it matters!

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