Thursday, August 28, 2008

HELP! Need Another Paper!!!

Limits for Combustion in Low O2 Redefine Paleoatmospheric Predictions for the Mesozoic
C. M. Belcher* and J. C. McElwain

Several studies have attempted to determine the lower limit of atmospheric oxygen under which combustion can occur; however, none have been conducted within a fully controlled and realistic atmospheric environment. We performed experimental burns (using pine wood, moss, matches, paper, and a candle) at 20°C in O2 concentrations ranging from 9 to 21% and at ambient and high CO2 (2000 parts per million) in a controlled environment room, which was equipped with a thermal imaging system and full atmospheric, temperature, and humidity control. Our data reveal that the lower O2 limit for combustion should be increased from 12 to 15%. These results, coupled with a record of Mesozoic paleowildfires, are incompatible with the prediction of prolonged intervals of low atmospheric O2 levels (10 to 12%) in the Mesozoic.

Experimental science to back up the fosil record. Must. Have. Must. Have. Anyone got it?


Anonymous said...

check yr gmail account.

Will Baird said...

FYI, folks.

Carlos got me the paper.

There's a post coming on because of it.