Monday 28 September 2009

A little dust storm? Don't worry be happy!


Dust plume passing over the southern section of the Great Barrier Reef
24 September 2009
From
Universe Today

If you thought that anti-science 'what anthropomorphic climate change?' blogs couldn't get any worse, then Watts Up With That just proved you wrong.

WUWT thinks that the recent massive loss of top soil across three states due to the big dust storm (larger picture) which hit the Australian east coast on 23 September 2009 is a real bonus:

That dust headed to sea has an unappreciated benefit – it will fertilize the ocean with its mineral rich dust. There may be some interesting blooms of sea life in the weeks to come.

Unfortunately, some of these interesting blooms may occur on the Great Barrier Reef which is already negatively impacted by silt and nutrient rich run-off from adjacent coastal lands.

Some readers' comments shown on the blog also posit that a dry Lake Eyre might be to blame for all that dust. Confusing the much larger Lake Eyre Basin with the actual lake.

Image from The Lake Eyre Basin Intergovernmental Agreement Click to enlarge

NASA which had a space-eye view of the storm's progress pointed out that dust was rising from multiple sources including agricultural land not just from the salt lakes.

The second dust storm which formed on 25 September also crossed three states and reached the coast.

On a continent with some of the oldest and most depleted soils on Earth, dust storms and the potential for erosion they represent, don't actually have an upside.

On the NSW North Coast four days of dust-laden air followed in some areas by a day of bushfire smoke on Sunday were not ideal living conditions for the very young, frail aged and those with respiratory problems.

Smoke from mulitple fires mingling with dust
27 September 2009
Southern Queensland to Northern NSW
From
MODIS

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