In addition to the recent study published in Environmental Research Letters entitled, “Cost Analysis of Stratospheric Albedo Modification Delivery Systems,” where the costs of delivering tonnes of aerosols into the stratosphere were examined in terms of a variety of different means, a 2010 study undertaken on behalf of the Belfort Group, a Belgian “environmental watchdog” organization, also corroborates much of the information compiled by citizens and activists the world over regarding the existence of chemtrails and stratospheric weather modification programs.
The study, entitled, “Contrail Science, Its Impact On Climate and Weather Manipulation Programs Conducted By The United States And Its Allies,” seeks to highlight “the specific problems associated with contrails emitted by aircraft, the manipulation for defense purposes of some of these trails by the United States government and the subsequent effect on quality of life.”
Making a distinction between four different types of man-made “clouds” – contrails, chemtrails, distrails (the tunnel produced when a plane passes through a stable cloud), and wingtip vortices (the vortex caused by planes flying at high speed) – the study focuses on contrails and chemtrails.
Thus, the report defines chemtrails by stating,
According to the study, in regards to the average daily temperature and the overall cloud cover generated by contrails on a regular basis, a survey of the average Diurnal Temperature Range (DTR) was conducted during the rare period that commercial air traffic was grounded on and in the days after September 11, 2001.
It was subsequently determined that a temperature increase of about 10 C occurred during that period in comparison with the normal values.
The report states,
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