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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Nadine Carroll who wrote (11025)	4/2/2007 12:36:23 PM
From: longnshort	Respond to of 36921

I think it means if you go to East LA you will die.

To: Nadine Carroll who wrote (11025)	4/2/2007 1:53:32 PM
From: Wharf Rat	Read Replies (2) \| Respond to of 36921

Another really good try from our advanced general scientist. C-- Maybe the galaxy is slowing down, and there is less cosmic wind chill effect. Answer: Urban Heat Island Effect has been examined quite thoroughly (PDF)http://www.ncdc.noaa.gov/oa/climate/research/population/article2abstract.pdf and found to have a negligible effect on temperature trends. Real Climate has a detailed discussion of this here.http://www.realclimate.org/index.php?p=43 What's more, NASA GISS data.giss.nasa.gov takes explicit steps in their analysis to remove any such spurious signal by normalizing urban station data trends to the surrounding rural stations. It is a real phenomenon, but it is one climate scientists are well aware of and have taken any required steps to remove its influence from the raw data. gristmill.grist.org ncdc.noaa.gov

To: Nadine Carroll who wrote (11025)	4/2/2007 5:57:40 PM
From: maceng2	Read Replies (2) \| Respond to of 36921

So what's the news? It is cursory evidence that the microclimate around cities is effected by human activity. i.e. The temperature record confirms there is an increase in temperature, and a trend from 1878 till today in LA. Over the last few years there has been a decrease in temperature leading to some speculation from L&S that there might have been a reversal in trend. I said that it's a matter of waiting and seeing. I then moved onto global climate subject matters.