Amazongate Scientist : Enduring Chaos

Arindam Samanta of Boston University was one of the scientists behind the challenge to “Amazongate” : the false theory that the Amazon can not only withstand, but flourish under increased levels of drought :-

http://www.agu.org/pubs/crossref/2010/2009GL042154.shtml

“GEOPHYSICAL RESEARCH LETTERS, VOL. 37, L05401, 5 PP., 2010 : doi:10.1029/2009GL042154 : Amazon forests did not green-up during the 2005 drought… There was no co-relation between drought severity and greenness changes, which is contrary to the idea of drought-induced greening. Thus, we conclude that Amazon forests did not green-up during the 2005 drought.”

And now he’s back, describing some of the “one way only” changes to the Earth System from Global Warming brought on by increasing Carbon Dioxide emissions from mankind’s activities :-

http://journals.ametsoc.org/doi/abs/10.1175/2010EI325.1

http://cybele.bu.edu/download/manuscripts/samanta-02.pdf

“Physical Climate Response to a Reduction of Anthropogenic Climate Forcing : Earth Interactions d Volume 14 (2010) d Paper No. 7 : …Here, using a simple set of experiments employing a current generation numerical climate model, the authors examine the response of the physical climate system to decreasing CO2 [Carbon Dioxide] concentrations following an initial increase. Results indicate that many characteristics of the climate system, including global temperatures, precipitation, soil moisture, and sea ice, recover as CO2 concentrations decrease. However, other components of the Earth system may still exhibit nonlinear hysteresis. In these experiments, for instance, increases in stratospheric water vapor, which initially result from increased CO2 concentrations, remain present even as CO2 concentrations recover…While this asymmetric response does not necessarily impact the global mean surface temperatures, it does suggest that certain components of the full Earth system could experience nonlinear hysteresis as CO2 concentrations return to their current levels…”

Even as we make moves to reduce our Carbon Dioxide emissions, we cannot expect everything to immediately – or always – come back to normal.

Leave a Reply

Your email address will not be published. Required fields are marked *