Gt - FL USA
Unfortunately... rather than reducing the man-made 'persistent contrails from aviation' by eliminating sulfur from jet fuel and - or adopting flight plans that reduce their formation, the study calls for the addition of yet another chemical compound (bismuth triiodide) to be released into the atmosphere to reduce cirrus coverage.
Update 8/16/13, study:
Effects of stratospheric sulfate aerosol geo-engineering on cirrus clouds
(Jan 17, 2014)
Reductions in aircraft particulate emissions due to the use of Fischer–Tropsch fuels
A. J. Beyersdorf et al - doi:10.5194/acp-14-11-2014
#Geoengineering #Climate Issues