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Vertaal:
              De Aziatische Bruine Wolk: De globale Chaos van het Klimaat en Tropische Gletsjers
Vrijdag, 14 November, 2008 Colonos?| Within the next 5-8 years, on a conservative estimate, more than 30 million people in Bolivia, Peru and Ecuador will be without water, in particular in the big cities, La Paz, Lima and Quito and the problems have already begun: ?The effect of diminishing glaciers is most evident in El Alto, an indigenous community of 800,000 people perched above the capital of La Paz. Waves of mostly Aymara immigrants - the satellite city is growing at between 5 percent and 10 percent a year - arrive daily, fleeing the poverty of their native highlands. With the disappearance of glacial water supplies and a decrepit and poorly managed water company, the city could soon suffer a severe water shortage, experts say? (Murphy 2008) Living as we do in a world of accelerated urbanisation where already the majority of the world?s population live in cities the pressure for the circulation of water is increased dramatically and the problems thus intensified: ?Ecuador?s Quito draws 50% of its water supply from the glacial basin, and Bolivia?s La Paz, 30%. The volume of the lost glacier surface of Peru is equivalent to 7,000 million cubic meters of water, that is about ten years of water supply for Lima.? To get an idea of the scale of the problem already today it may be useful, for some, to think in terms of the lost production capacity in hydroelectricity plants, due to less water running down from the soon to be extinct glaciers (same source as above): ?The impact of Andean glacier retreat on the local economy is formidable. For example in Peru, the annual incremental cost to the power sector is estimated at US$1.5 billion?. It will also be instructive to take a global view. The World Glacier Monitoring Service (WGMS) writes: ?Some of the most dramatic shrinking has taken place in Europe with Norway?s Breidalblikkbrea glacier thinning by close to 3.1 metres (2.9 metre water equivalent) during 2006 compared with a thinning of 0.3 metres (0.28 metres water equivalent) in the year 2005. Other dramatic shrinking has been registered at Austria?s Grosser Goldbergkees glacier, 1.2 metres in 2006 versus 0.3 in 2005; France?s Ossoue glacier, nearly 3 metres versus around 2.7 metres in 2005; Italy?s Malavalle glacier 1.4 metres versus around 0.9 metres in 2005; Spain?s Maladeta glacier, nearly 2 metres versus 1.6 metres in 2005; Sweden?s Storglaciaeren glacier, 1.8 metres versus close to 0.080 metres in 2005 and Switzerland?s Findelen glacier, 1.3 metres versus 0.22 metres in 2005.? Deglaciation is an effect of climate change. A major cause of climate change is deforestation, a problem that the indigenous people of the Amazon know very well. The relation between deglaciation and deforestation is of course very complex, but in its simplicity is also shows what prominent climate change researcher, James Hansen at NASA, identifies as positive feedback loops in the climatic systems. (This is very simplified and quickly written) - When the output of a process becomes an input into the same process you have a positive feedback loop, which means that a system can run amok, since it keeps accelerating, in the crudest of terms. That is what is happening on various fronts in terms of climate change. The melting ice caps means that less sun is reflected and therefore more heart trapped in the Earth?s atmosphere, but the melting of the ice was caused by increased heat being trapped in the first place by the release of green house gasses. Moreover, the increase in dark surface (or oceans) means that even more heat is trapped. More and more. The thawing of permafrost releases greenhouse gases trapped underneath its protective frozen, or, rather, melting shield, causing even more permafrost to give way for more gases. The Asian Brown Cloud both attracts more heat as well we cause cooling in some places, but the mixture of the two leads to further climate chaos and irregularities on a sub-continent where they used to say that you could set your clock after the monsoon. Hot and cold and irregular weather and an acceleration of deglaciation in the Himalayas and dramatically increased ?food security issues? beyond the glacially dependent regions, those are the ?facts?, even if some cooling occurs: ?Globally however brown clouds may be countering or ?masking? the warming impacts of climate change by between 20 and up to 80 per cent the researchers suggest. This is because of particles such as sulfates and some organics which reflect sunlight and cool the surface. The cloud is also having impacts on air quality and agriculture in Asia increasing risks to human health and food production for three billion people.? It is all connected. Deforestation is predominantly directly human made, but the last few years in the Amazon, with less rain and less water running down from the glaciers have accelerated deforestation because non-human made forest fires are occurring on large scale in the Amazon, producing clouds not entirely unlike the Asian Black Cloud. The output of climate change has become inputs and when processes accelerate in this manner we reach what Hansen calls tipping points: ?The Earth?s climate is nearing, but has not passed, a tipping point beyond which it will be impossible to avoid climate change with far-ranging undesirable consequences. These include not only the loss of the Arctic as we know it, with all that implies for wildlife and indigenous peoples, but losses on a much vaster scale due to rising seas. Ocean levels will increase slowly at first, as losses at the fringes of Greenland and Antarctica due to accelerating ice streams are nearly balanced by increased snowfall and ice sheet thickening in the ice sheet interiors. But as Greenland and West Antarctic ice is softened and lubricated by meltwater, and as buttressing ice shelves disappear because of a warming ocean, the balance will tip toward the rapid disintegration of ice sheets. The Earth?s history suggests that with warming of two to three degrees, the new sea level will include not only most of the ice from Greenland and West Antarctica, but a portion of East Antarctica, raising the sea level by twenty-five meters, or eighty feet. Within a century, coastal dwellers will be faced with irregular flooding associated with storms. They will have to continually rebuild above a transient water level.? (James Hansen 2006) Hansen leaves no doubt about where to find those responsible for human made climate change on a global and threatening scale. In 1988 Hansen spoke before the U.S Congress and said that we can be 99% sure that climate change is human made and in 2008 he returned to speak before congress, now certain not only of what causes climate change, but also about who to hold responsible, namely CEOs of corporations that are ?fully aware of the disinformation about climate change they are spreading? (and causing). That would in other words be the leading capitalists in the oil and energy sectors of the market. These climate change stories can be seen as evidence that the capitalist market place and mode of production are unsustainable: they use more resources than the world can regenerate with disasters already occurring. Conclusion: industrial capitalism is bad for you! Act NOW! For else, where do the children play?
Have Your Say: The Asian Brown Cloud: Global Climate Chaos and Tropical Glaciers Please read our posting guidelines before posting. Alternatively you can discuss this report here. 2 Responses to “The Asian Brown Cloud: Global Climate Chaos and Tropical Glaciers”
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http://www.indymedia.org.uk/en/2008/07/403092.html