How dry are we?

Discussion in 'Environment' started by Old Rocks, Feb 25, 2009.

  1. Old Rocks

    Old Rocks Diamond Member

    Oct 31, 2008
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    Portland, Ore.
    TomDisptach has an article prompted by the Victorian bushfires, looking at drought conditions worldwide. Tom asks "What Does Economic "Recovery" Mean on an Extreme Weather Planet?" - Nobody Knows How Dry We Are.

    It turns out that you don't want to be a former city dweller in rural parts of southernmost Australia, a stalk of wheat in China or Iraq, a soybean in Argentina, an almond or grape in northern California, a cow in Texas, or almost anything in parts of east Africa right now. Let me explain.

    As anyone who has turned on the prime-time TV news these last weeks knows, southeastern Australia has been burning up. It's already dry climate has been growing ever hotter. "The great drying," Australian environmental scientist Tim Flannery calls it. At its epicenter, Melbourne recorded its hottest day ever this month at a sweltering 115.5 degrees, while temperatures soared even higher in the surrounding countryside. After more than a decade of drought, followed by the lowest rainfall on record, the eucalyptus forests are now burning. To be exact, they are now pouring vast quantities of stored carbon dioxide, the greenhouse gas considered largely responsible for global warming, into the atmosphere.

    In fact, everything's been burning there. Huge sheets of flame, possibly aided and abetted by arsonists, tore through whole towns. More than 180 people are dead and thousands homeless. Flannery, who has written eloquently about global warming, drove through the fire belt, and reported:

    "It was as if a great cremation had taken place… I was born in Victoria, and over five decades I've watched as the state has changed. The long, wet and cold winters that seemed insufferable to me as a boy vanished decades ago, and for the past 12 years a new, drier climate has established itself… I had not appreciated the difference a degree or two of extra heat and a dry soil can make to the ferocity of a fire. This fire was different from anything seen before."

    Australia, by the way, is a wheat-growing breadbasket for the world and its wheat crops have been hurt in recent years by continued drought.
    Peak Energy: How Dry Are We ?

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