Tuesday, December 5, 2006

More Spare the Air advisorites

A few days ago they sent out an advisory, which I thought was a bit odd given that it's winter-time so I'd posted about it. But they've now sent out a series of these advisories since then, including one today.

On their web site they explain this: In the wintertime, as cooler temperatures and reduced sunlight diminish ozone problems, particulate matter (PM), becomes the pollutant with the greatest impact on air quality. A seasonal reversal of wind patterns and an increase in stagnant air due to temperature inversions — combined with increased wood burning, especially during the holidays — can lead to unhealthy PM concentrations on certain winter days.

You can find out more at their web site, sparetheair.org.