A long hot summer Garry, but then we have the fresh clear autumn skies to make up for it?????

Habitual and encouraged pre burning [burn offs] to avoid the big burn in the burning season will be followed by the burning of the slash to remove the slash so the new growth is safe from burning next season.

And on top of this everything sels must be burnt to keep nature tidy. 

And with all these preprations stil the bushfire comes.

Tas. Environment Minister O’Byrne thanks the Launceston City Council, industries in the region and the community for working together to improve air quality in Launceston, with no breaches of national guidelines this past winter.
She left out Garry Stannus whose photos of Gunns’ smoking chimneys moved the City Council to act and to force Gunns to clean up.

No doubt one of Michelle’s little lackeys will remind her of her omission, after they read your post, Mike!

Where there’s wildfire smoke, there’s toxicity
> http://www.eurekalert.org/pub_releases/2008-11/uosc-wtw111908.php

 
The health threat to city dwellers posed by Southern California wildfires like those of November 2008 may have been underestimated by officials.

Detailed particulate analysis of the smoke produced by previous California wild fires indicates that the composition posed more serious potential threats to health than is generally realized, according to a new paper analyzing particulate matter (PM) from wildfires in Southern California.

The paper, entitled “Physicochemical and Toxicological Profile of Particulate Matter (PM) in Los Angeles during the October 2007 Southern California Wildfires,” will appear in Environmental Science and Technology. It confirms earlier studies by air polllution specialist Constantinos Sioutas of the USC Viterbi School of Engineering, who is also co-director of the Southern California Particle Center.

For the study Sioutas and colleagues from USC, the University of Wisconsin-Madison and RIVM (the National Institute of Health and the Environment of the Netherlands) analyzed the particular matter gathered during the fall 2007 blazes.

“Fire emissions produce a significantly larger aerosol in size than typically seen in urban environments during periods affected by traffic sources, which emit mostly ultrafine particles,” Sioutas said.

“Staying indoors may not provide protection from smoke particles in the absence of air conditioning or the ability to recirculate filtered indoor air. This is because the fire particles can penetrate indoor structures more readily than particles from vehicular emissions.”

According to Sioutas, the fires produce a dangerous mix. “The chemical composition of particles during the fire episodes is different than that during ‘normal’ days impacted by traffic sources.

“Tracers of biomass burning (e.g. potassium and levoglucosan) were elevated by two-fold during the fire periodm” he said. “Water-soluble organic carbon (WSOC) was also higher during the fire event. This makes these particles from wood smoke more bioavailable, thus more readily absorbable by our system than particulate matter from traffic sources.”

The ability of the particulates to penetrate structures, even if windows are closed, and their potential ability to be absorbed by human tissues are a matter of concern. “More aggressive measures to avoid smoke seem to deserve study, including distribution of masks and evacuation to air conditioned environments, and closure of non-smoke secured schools,” said Sioutas, who holds the school’s Fred Champion Professorship of Civil and Environmental Engineering.