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What A Week It Was: Apocadocuments from
View By Scenario:
Species Collapse:(3)
Plague/Virus:(1)
Climate Chaos:(8)
Resource Depletion: (4)
Biology Breach:(6)
Recovery:(1)
This Week's Top Ten Very Scary Tags:
health impacts  ~ climate impacts  ~ capitalist greed  ~ airborne pollutants  ~ anthropogenic change  ~ unintended consequences  ~ economic myopia  ~ global warming  ~ toxic water  ~ food crisis  ~ corporate malfeasance  



ApocaDocuments (4) matching "anthropogenic change" from this week
[see full week] ~ [see all stories tagged "anthropogenic change"]
Sat, Apr 9, 2011
from Washington Post:
Plants' earlier bloom times hurting some creatures
Cristol Fleming has gone out hunting for the first wildflower blooms of spring for close to four decades. She knows where every tiny bluish clump of rare phacelia can be found, where every fragile yellow trout lily grows....So it was with some consternation that the local field botanist found two of her favorite early flowers -- sprigs of white and purple "harbinger of spring” no higher than an inch and graceful white twinleaf -- in full bloom in the chill of late March....Bloom hunters like Fleming, who for 40 years have been tramping through the woods, roaming along riverbanks and scrambling over rocky outcrops to document the first blooms of spring in the Washington area, worry that what they have been seeing is nothing less than the slow, inexorable shift of global warming. ...


Enough with the bloom-and-doom!

ApocaDoc
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Sat, Apr 9, 2011
from Associated Press:
World stumbles toward climate summit
Nineteen years after the world started to take climate change seriously, delegates from around the globe spent five days talking about what they will talk about at a year-end conference in South Africa. They agreed to talk about their opposing viewpoints. Delegates from 173 nations did agree that delays in averting global warming merely fast-forward the risk of plunging the world into "catastrophe." ...the U.N. meeting in Bangkok, which concluded late Friday after delegates cobbled together a broad agenda for the December summit, failed to narrow the deep divisions between the developing world and the camp of industrialized nations led by the United States. These may come to plague the summit in Durban. ...


Participants in this summit were given commemorative bronze fiddles.

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Tue, Apr 5, 2011
from ScienceDaily:
Record Depletion of Arctic Ozone Layer Causing Increased UV Radiation in Scandinavia
Over the past few days ozone-depleted air masses extended from the north pole to southern Scandinavia leading to higher than normal levels of ultraviolet (UV) radiation during sunny days in southern Finland. These air masses will move east over the next few days, covering parts of Russia and perhaps extend as far south as the Chinese/Russian border. Such excursions of ozone-depleted air may also occur over Central Europe and could reach as far south as the Mediterranean.... "Such massive ozone loss has so far never occurred in the northern hemisphere, which is densely populated even at high latitudes," AWI researcher Markus Rex describes the situation. The ozone layer protects life on Earth's surface from harmful solar ultraviolet radiation. Because of the low inclination angle of the sun, exposure to ultraviolet radiation is not normally a public health concern at high northern latitudes. However, if ozone-depleted air masses drift further south over Central Europe, south Canada, the US, or over Central Asiatic Russia, for example, the surface intensity of UV radiation could lead to sunburn within minutes for sensitive persons, even in April.... Ozone loss was particularly large this winter due to unusually low temperature, which results in the presence of clouds in the polar stratosphere. Reactions on the surface of these clouds transform chlorine containing breakdown products of CFCs into compounds that aggressively remove ozone.... The stratosphere has been observed to cool, following the rise of greenhouse gases (GHGs), because heat that would otherwise reach the stratosphere is trapped below, warming the surface. The situation for the Polar Stratosphere is more complicated because of dynamical heating by waves generated in frontal systems. For several years, however, scientists have noted that the coldest winters in the Arctic stratosphere are getting colder, a development that enhances the ozone-destroying efficiency of the remaining CFCs and could be linked to rising levels of GHGs. ...


It ain't the heat, it's the humid-UV.

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Mon, Apr 4, 2011
from PhysOrg:
Declining mangroves shield against global warming
Mangroves, which have declined by up to half over the last 50 years, are an important bulkhead against climate change, a study released on Sunday has shown for the first time.... Destruction of these tropical coastal woodlands accounts for about 10 percent of carbon dioxide emissions from deforestation, the second largest source of CO2 after fossil fuel combustion, the study found. Fewer trees not only mean less CO2 absorbed from the air, but also the release of carbon stocks that have been accumulating in shallow-water sediment over millennia. Mangroves -- whose twisted, exposed roots grace coastlines in more than 100 countries -- confer many benefits on humans living in their midst. The brackish tidal waters in which the trees thrive are a natural nursery for dozens of species of fish and shrimp essential to commercial fisheries around the world. Another major "ecosystem service," in the jargon of environmental science, is protection from hurricanes and storm surges. ...


I bet that passive-voice "decline" has an active causal agent behind it.

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