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jet engine effluent trails, geoengineering, weather manipulation
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'Policy Implications of Greenhouse Warming'

Mitigation, Adaptation, and the Science Base

Policy Implications of Greenhouse Warming - The Entire Report OnlineIn 1992, a massive study project was funded by US Congress.
The project comprises a 994 page document outlining the threat of greenhouse warming along with potential geoengineering mitigations (corrective measures). In 2000 the study was published in book form by National Academy Press.

The project was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine.

The report (often viewed as "the smoking gun"), concludes that the most effective mitigation solution to global warming is to spray reflective aerosol compounds into the atmosphere via commercial, military and private aircraft.
Read an excerpt | View the entire report

Related articles:
Edward Teller - Earth Needs a Sunscreen
Science News - Iron vs The Greenhouse
Stratospheric Welsbach seeding for reduction of global warming
Global warming and ice ages
Geoengineering: A climate change Manhattan project
How Earth-scale Engineering can Save the Planet
The US hit list at the United Nations

Response Options to Rapid or Severe Climate Change
David Keith never expected to get a summons from the White House. But in September 2001, officials with the President’s Climate Change Technology Program invited him and more than two dozen other scientists to participate in a roundtable discussion called “Response Options to Rapid or Severe Climate Change.”

While administration officials were insisting in public that there was no firm proof that the planet was warming, they were quietly exploring potential ways to turn down the heat. Read more

An Abrupt Climate Change Scenario and Its Implications for United States National Security
In 2004, the U.S. Department of Defense released "An Abrupt Climate Change Scenario and Its Implications for United States National Security". Read excerpt | See full text .pdf document

Climate Change and Geoengineering
‘intentional large scale manipulation of the global environment’
Wayne Hall writes, "Geoengineering is one of the words used for techniques being proposed more and more frequently by scientists and commercial journalists as a ‘politically realistic’ remedy for climate change." Read more

The Discovery of Global Warming
A hypertext history by Spencer Weart, of how scientists came to (partly) understand what people are doing to cause climate change. Spencer Weart is Director of the Center for History of Physics of the American Institute of Physics (AIP) in College Park, Maryland, USA. Originally trained as a physicist, he is now a noted historian specializing in the history of modern physics and geophysics. Read
Research and recommended reading

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Go to In the News indexFor the latest news topics of interest, go to our In the News index

Clouds and Atmosphere 101
A brief overview of clouds and the layers of Earth's atmosphere Read

Giving wings to emission trading
July 2005 report commissioned by the European Commission, DG Environment. The overarching objective of the present project is to develop concepts for amending Directive 2003/87/EC to address the full climate change impact of aviation through emissions trading. HTML abstract | Full text .pdf document

Contrail-cirrus and their potential for regional climate change
After reviewing the indirect evidence for the regional climatic impact of contrail-generated cirrus clouds (contrail-cirrus), the author presents a variety of new measurements indicating the nature and scope of the problem. Abstract | Article link

Stratospheric Welsbach seeding for reduction of global warming
US patent no. 5,003,186 describes a method for reducing atmospheric or global warming. One proposed solution involves the seeding of the atmosphere with metallic particles. One technique proposed to seed the metallic particles was to add the tiny particles to the fuel of jet airliners, so that the particles would be emitted from the jet engine exhaust while the airliner was at its cruising altitude. Read an abstract | See US patent

Global warming and ice ages
Edward Teller's proposition of climate mitigation methods (based on "scatterers") to reduce the effects of greenhouse gases on global warming. This is a .pdf document. Get free Adobe Reader. Read HTML abstract | Full text .pdf document

Climate change, quick solution: Limit flight (US)
On February 22, 2004, a secret Pentagon report was leaked, warning of grave scenarios in the very near future due to climate change. Read

Longer airline flights proposed to combat global warming
Requiring planes to cruise at lower altitudes would cause longer flights and require more fuel. But in weighing the two possibilities, Noland and his collaborators conclude that a rise in the number of contrails would be worse for the environment. Read

Aviation and the environment
United States General Accounting Office (GAO). Aviation's effects on the global atmosphere are potentially significant and expected to grow. Read HTML excerpt | Full text .pdf document (This is a .pdf document. You need Adobe's free Reader in order to view the report).

Contrails reduce daily temperature range
Condensation trails (contrails) from jet aircraft affect climate. Abstract | Full text | Related article from CNN

A comparison of exhaust condensation trail forecast algorithms at low relative humidity
The Schrader and Schumann contrail forecast algorithms and a third algorithm are evaluated under low relative humidity conditions. Abstract | Article link

Evidence that Nitric Acid increases relative humidity in low-temperature cirrus clouds
In situ measurements of the relative humidity with respect to ice (RHi) and of nitric acid (HNO3) were made in both natural and contrail cirrus clouds in the upper troposphere.
Read HTML abstract | Full text .pdf document

The effects of aircraft wake dynamics on contrail development
Results of large-eddy simulations of the development of young persistent ice contrails are presented.
Read HTML abstract | Full text .pdf document

Going in circles
The writer discusses his attempts to discover the origin of an atmospheric slinky over the North Sea. Abstract | Article link

The initial composition of jet condensation trails
Physicochemical processes that generate and transform aerosols in jet aircraft plumes are discussed on the basis of theoretical models and recent observations of young contrails in the upper troposphere. Abstract | Article link


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