Gassing it up
Eli has had an idle thought. If you google "Sheep Mountain CO2 strip bark" you will hit the motherwave of denialist froth centered on the dendrology of very old trees high up in the Sierra sampled by Graybill. You could also add Campito, which is a bit to the north. Both can be found in the International Tree Ring Data Bank housed on line by NOAA. Now, being a curious bunny, Eli wanted to see where this was, and he had a map from "Trends in twentieth century tree growth at high elevations in the Sierra Nevada and White Mountains, USA from Bunn, Graumlich and Urban to go on. The area looked familar, so he looked it up on Google maps, and wadda you know, Sheep Mountain is right across from the Long Valley Caldera.
This may not mean much to the sheltered readers of this blog, but veterans of the CO2 comes from volcanoes nonsense will recognize Long Valley as the largest geological source of CO2 in the US, and pretty close to being the largest geological source anywhere until the next Pinatubo goes off (which may be at Long Valley:(.
A lot less than a zillion tailpipes but not zilch. Making the not so dumb assumption that winds move the CO2 from the caldera west up onto the mountain the case for CO2 fertilization looks pretty strong. OTOH, the level there could be a lot higher than normal and could have been so for a long time.
Wednesday, March 19, 2008
Gassing it up