Deforestation causes cooling in North...

Deforestation causes cooling in Northern U.S., Canada, study finds

There are 4 comments on the Science Daily story from Nov 16, 2011, titled Deforestation causes cooling in Northern U.S., Canada, study finds. In it, Science Daily reports that:

The surprising finding, which researchers say calls for new climate-monitoring strategies, will be published in the Nov.

Join the discussion below, or Read more at Science Daily.


United States

#1 Nov 16, 2011
The cooling effect is linear with latitude; the farther north you go, the cooler you get with deforestation.

Toronto, Canada

#2 Nov 16, 2011
"The researchers calculated that north of Minnesota, or above 45 degrees latitude, deforestation was associated with an average temperature decrease of 1.5 degrees Fahrenheit. On the other hand, deforestation south of North Carolina, or below 35 degrees latitude, appeared to cause warming."

Linear cooling or warming? Maybe. I didn't see anything that showed it was a linear progression.

United States

#3 Nov 16, 2011
Editor's summary

Climate models have long suggested that the conversion of forest to grasslands or crops could create a cooling effect, through an increase in surface albedo. But so far, no study encompassing a large climate and geographical reach has demonstrated that the effect exists. Xuhui Lee and colleagues now combine temperature data from forested eddy covariance towers and nearby cleared sites and demonstrate a cooling effect approaching 1 °C northwards of 45 °N. The effect decreases with decreasing latitude and may become positive south of 35 °N.


Figure 1: Annual mean difference (open land minus forest) in surface air temperature.
a, Correlation with latitude. b, Correlation with surface net radiation.

“Happy, warm and comfortable”

Since: Oct 10

Mountain retreat, SE Spain

#4 Nov 16, 2011
NobodyYouEverWantToKnow, alias:
LessFactMoreHype wrote:
Deforestations is a consequence of AGW,....

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