Tornado Alley (PROG)

[F6]

SilverSurfer -- with not a single source directly referenced, let alone cited/linked -- not even her own recently-published http://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate2347.html (or any related commentary, such as at http://www.healthnewsdigest.com/news/Environment_380/Global-Conversion-of-Forests-to-Cropland-Affected-Climate.shtml / http://www.stamfordplus.com/stm/information/nws1/publish/education/Yale-study-looks-at-how-global-conversion-of-forests-to-cropland-affected-climate22081.shtml ["Using sophisticated climate modeling, Unger calculated that a 30% decline in BVOC emissions between 1850 and 2000, largely through the conversion of forests to cropland, produced a net global cooling of about 0.1 degrees Celsius. During the same period, the global climate warmed by about 0.6 degrees Celsius, mostly due to increases in fossil fuel carbon dioxide emissions."])

for context and a little (more) compare and contrast, an earlier one of hers:

Global Climate Forcing by Criteria Air Pollutants
Annual Review of Environment and Resources
Vol. 37: 1-24 (Volume publication date November 2012)
DOI: 10.1146/annurev-environ-082310-100824
Nadine Unger
School of Forestry and Environmental Studies, Yale University, New Haven, Connecticut 06511; email: [e-mail]
ABSTRACT
Ambient air pollution has significant impacts on global climate change in complex ways, involving both warming and cooling, and causes an estimated one million deaths every year. Modeling studies and observations from a suite of platforms, including those that are space based, have revealed that air pollution is a widespread global phenomenon. The net effect of air pollution is a global cooling that is masking 50% of the committed greenhouse gas (GHG) warming from the Industrial Revolution. Aggressive air pollution abatement and climate stabilization strategies that reduce cooling pollutants may lead to a short-term warming surge that is unsafe for ecosystems and the human population, imposing complex trade-offs in policy making. Conversely, selective reduction of warming air pollutants to mitigate near-term climate change may offer opportunities for synergistic policy development. Reducing and preventing the accumulation of fossil-fuel carbon dioxide (CO2) in the atmosphere is the only sustainable way to protect climate safety in the long term. Here, the current understanding of air pollution effects on global climate change is reviewed, including assessment by individual pollutant, precursor emission, economic sector, and policy-relevant scenarios. (emphasis added)
http://www.annualreviews.org/doi/abs/10.1146/annurev-environ-082310-100824

there will of course be further responses -- but here are two so far:

Deforestation and Global Warming: Who Knew Nadine Unger?
September 20, 2014
http://niftydoc.blogspot.com/2014/09/deforestation-and-global-warming-who.html [no comments yet]

The Physics of Planting Trees
Sep 20, 2014
http://www.dailykos.com/story/2014/09/20/1331173/-The-Physics-of-Planting-Trees [with comments]

and also of course -- (linked in) http://investorshub.advfn.com/boards/read_msg.aspx?message_id=102161216 and preceding and following