[Source: heliogenic.blogspot.com]
Showing posts with label heliogenic. Show all posts
Showing posts with label heliogenic. Show all posts
12.10.2009
4.29.2009
Earth's atmosphere is CO2 impoverished
http://heliogenic.blogspot.com/2009/04/earths-atmosphere-is-co2-impoverished.html
"And if co2science and many other excellent sources are right on the benefits of carbon/CO2 (and I believe they are), then there is no need for us to reduce our carbon footprint, decarbonize our economies, reduce CO2 in the atmosphere, cap and trade on CO2, tax carbon, or engage any other endeavors to limit the basis and food of all life. In fact, according to paleo-climate records, our atmosphere is still "CO2 impoverished".
Dangerous levels of CO2 are not reached till up around 5,000 ppm to 10,000 ppm, and some sources suggest that CO2 levels are not dangerous till 15,000 ppm (see co2science.org, "Does high CO2 harm humans" under Health Effects at CO2: General or http://co2science.org/subject/questions/1998/91598q1.php). The low levels of atmospheric CO2 that we have been experiencing in this latest ice era are the real problem for life on Earth. Life evolved over the past 600 million years at the more healthy average level of 1500 ppm.
And when CO2 was at 7000 ppm there was no dangerous global warming. When it was at 4,400 ppm during the Late Ordovician Period, Earth was as cold as it is now. So also over the past 150 years." Wendell Krossa on CCNet April 20.
[Source: Heliogenic Climate Change]
Dangerous levels of CO2 are not reached till up around 5,000 ppm to 10,000 ppm, and some sources suggest that CO2 levels are not dangerous till 15,000 ppm (see co2science.org, "Does high CO2 harm humans" under Health Effects at CO2: General or http://co2science.org/subject/questions/1998/91598q1.php). The low levels of atmospheric CO2 that we have been experiencing in this latest ice era are the real problem for life on Earth. Life evolved over the past 600 million years at the more healthy average level of 1500 ppm.
And when CO2 was at 7000 ppm there was no dangerous global warming. When it was at 4,400 ppm during the Late Ordovician Period, Earth was as cold as it is now. So also over the past 150 years." Wendell Krossa on CCNet April 20.
4.08.2009
More CO2 stimulates wetlands
http://heliogenic.blogspot.com/2009/04/more-co2-stimulates-wetlands.html
"The team conducted their study for two years (2006 – 2007), during which they focused on the role that organic matter, both growing and decaying, plays on soil elevation in wetlands and the effect CO2 has on this process. Coastal wetlands must build upward through the accumulation of mineral and organic matter to maintain a constant elevation relative to water levels; otherwise, they will drown and disappear. ... "Our findings show that elevated CO2 stimulates plant productivity, particularly below ground, thereby boosting marsh surface elevation," said Adam Langley, the paper's lead author. Patrick Megonigal, the paper's corresponding author, added "We found that by stimulating root growth, thus raising a marsh's soil elevation, elevated CO2 may also increase the capacity for coastal wetlands to tolerate relative rises in sea level." Both scientists are ecologists at the Smithsonian Environmental Research Center in Edgewater, Md. ...
To examine how CO2 may interact with other factors that will accompany sea-level rise, the authors also manipulated CO2, salinity and flooding in a companion greenhouse study. ... "Elevated CO2 doubled the short-term rate of elevation gain in our marsh." [To find the back-up resource, read NASA's own Earth Obsevatory's march 23, 2009, piece:] ''Scientists Find Climate Change to have Paradoxical Effects on Coastal Wetlands''.
"The team conducted their study for two years (2006 – 2007), during which they focused on the role that organic matter, both growing and decaying, plays on soil elevation in wetlands and the effect CO2 has on this process. Coastal wetlands must build upward through the accumulation of mineral and organic matter to maintain a constant elevation relative to water levels; otherwise, they will drown and disappear. ... "Our findings show that elevated CO2 stimulates plant productivity, particularly below ground, thereby boosting marsh surface elevation," said Adam Langley, the paper's lead author. Patrick Megonigal, the paper's corresponding author, added "We found that by stimulating root growth, thus raising a marsh's soil elevation, elevated CO2 may also increase the capacity for coastal wetlands to tolerate relative rises in sea level." Both scientists are ecologists at the Smithsonian Environmental Research Center in Edgewater, Md. ...
To examine how CO2 may interact with other factors that will accompany sea-level rise, the authors also manipulated CO2, salinity and flooding in a companion greenhouse study. ... "Elevated CO2 doubled the short-term rate of elevation gain in our marsh." [To find the back-up resource, read NASA's own Earth Obsevatory's march 23, 2009, piece:] ''Scientists Find Climate Change to have Paradoxical Effects on Coastal Wetlands''.
Subscribe to:
Posts (Atom)
