Wednesday, January 27, 2010

More tales from the Himalayas

I see the Himalayan glacial meltdown is still being used as a topic about the rights and wrongs of climate change.

The story is more complicated than I mentioned in my last blogging though overall the prediction is still wrong. When I first started blogging .. many years and a few blogs ago I mentioned that one of the strange variables in assessing global warming were the world's glaciers .. because some were growing and some retreating .. this could be due to changes in the eco systems brought on by the changes in temperature .. bringing warmer air to some places, colder to others. Also some areas are more industrialised than others which could account for some melting faster .. because of localised particles in the air.

I think I focused on American glaciers then but it is happening in the Himalayas as well. Some are growing .. some are retreating. Scientists are still trying to work out the sequences of events which are causing some to grow. It is suspected that the fast retreat of some is due to industry and is worse in some areas than others.

When the guy first came up with this theory that glaciers in the Himalayas would be gone in 30 years the journalist he spoke to has said that it was made clear that he was speaking about a region of Himalayan glaciers .. not the complete network .. but, still, the report this was said to be mentioned in said nothing about them being gone in the predicted 30 years.

So, while were reported in any study to be gone in the predicted 30 years some are still thawing faster than others .. particularly those who the changes in the ecosystems, brought on by global warming, have encouraged to grow!! Think I illustrated this by mentioning what would happen if the Gulf Stream changed because it would be bringing cold rather than warm air with it. A localised effect could be happening in the Himalayas .. or, just like the symbol of chaos theory .. the fluttering of a butterfly's wing .. one change could start a system of small changes and voila!!

http://www.kidsgeo.com/geography-for-kids/0164-ecosystems.php

http://fractalfoundation.org/resources/what-is-chaos-theory/

But .. the fact that the Himalayan glaciers will be there in 30 years doesn't mean that they are not going to cause problems in the near future. The glacial lakes are expanding.

http://www.thefreelibrary.com/Global+warming+triggers+glacial+lakes+flood+threat.+(International+...-a093211745

http://indepth.news.sky.com/InDepth/topic/Nepal_Mountains