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originally posted by: AugustusMasonicus
originally posted by: network dude
Oh Jubila and Jubilo, I am more guilty than you both. I have been a "debunker" of chemtrails for a while now.
I have been waiting years for someone to get a Masonic reference into a Chemtrail thread.
The burning of incredible quantities of toxic fuel has impacts that extend beyond the climate. As soon as airplanes leave the gate, they begin to produce phenomenal amounts of nitrogen oxides (NOx), carbon monoxide, particulate matter, and cancer-causing toxics such as benzene and formaldehyde. 3 This pollution travels miles downwind, contributing to asthma, lung and heart disease, and a large number of cancers. The emissions from taxiing and take-off of aircraft help make airports some of the largest sources of these pollutants and major public health hazards. For example, Los Angeles Airport is the largest source of NOx, a key cause of the region’s copious smog, in California and the third largest source of carbon monoxide. 4 Logan Airport in Boston, MA produces twice as much benzene as the next largest source in Massachusetts. 5 Scientists have found that even small increases in taxi time at airports in Southern California contribute to significant increases in asthma, respiratory ailments, and heart disease in surrounding communities. 6 Scientists also believe that particulate matter emissions from airplanes, along with ships and trains, contribute to 1,800 early deaths per year in the United Kingdom alone. 7 These health impacts also translate into large economic costs for society.
originally posted by: network dude
a reply to: InTheLight
I can sort of do that for you. Pollution is a problem Anything that burns fuel for propulsion makes pollution. But, in the context of "contrails", the part you see isn't the pollution at all, unless you are discussing visual pollution. The bad stuff is invisible and happening the entire time the engines are running. I realize that doesn't make any of that more palatable, but it might make you less concerned about the white lines you see in the sky. They are man made cirrus clouds, and just as harmless.
Alarmingly, aircraft emissions are expected to more than triple by mid-century. But the Center is working to make sure that prediction doesn’t come true: In December 2007 we joined with states, regional governments and other conservation groups to petition the U.S. Environmental Protection Agency to address the effects of aircraft pollution under the Clean Air Act. The agency continued to drag its feet on the issue, so in June 2010 the Center and allies sued the agency for its failure to address global warming pollution from aircraft, ships and nonroad vehicles. The next year a court ruled that the EPA must formally determine whether greenhouse gas pollution from aircraft endangers human health and welfare. When the agency still hadn't done so nearly three years later, in August 2014 the Center and allies filed a notice of intent to sue it over its failure to reduce global warming pollution from aircraft engines. The next month the EPA announced the beginning of a domestic rulemaking process to determine whether the fast-growing carbon emissions from American aircraft endanger public health and welfare. In June 2015 the EPA finally released a draft finding that greenhouse gas pollution from America’s aircraft fleet does harm the climate and endanger human health and welfare. But the agency also considered handing off responsibility for airplane emissions to a secretive international aviation organization that, for the past 18 years, has refused to curb aircraft-induced global warming. That agency is now debating setting aviation CO2 emissions standards in 2016, but the standards under consideration are woefully insufficient. By as late as 2030, they would likely affect just 5 percent of aircraft — and even then would do next to nothing to lower the industry’s steeply rising emission curve.
Yeah, you keep repeating the same theory but it doesn't jive with me, perhaps only because I am looking at the bigger picture, that being, accumulated quantities of pollutants in the atmosphere from pollutants within contrails. As well, with the information I am looking at, and posting, a serious pollution problem exists from plane exhaust. Now how can that be if contrails are just harmless cirrus clouds?
How are aircraft emissions linked to contrail formation?
Aircraft engines emit water vapor, carbon dioxide (CO2), small amounts of nitrogen oxides (NO), hydrocarbons, carbon monoxide, sulfur gases, and soot and metal particles formed by the high-temperature combustion of jet fuel during flight. Of these emittants, only water vapor is necessary for contrail formation. Sulfur gases are also of potential interest because they lead to the formation of small particles. Particles suitable for water droplet formation are necessary for contrail formation. Initial contrail particles, however, can either be already present in the atmosphere or formed in the exhaust gas. All other engine emissions are considered nonessential to contrail formation.
Three types of aerosols significantly affect the Earth's climate. The first is the volcanic aerosol layer which forms in the stratosphere after major volcanic eruptions like Mt. Pinatubo. The dominant aerosol layer is actually formed by sulfur dioxide gas which is converted to droplets of sulfuric acid in the stratosphere over the course of a week to several months after the eruption (Fig. 1). Winds in the stratosphere spread the aerosols until they practically cover the globe.
The second type of aerosol that may have a significant effect on climate is desert dust. Pictures from weather satellites often reveal dust veils streaming out over the Atlantic Ocean from the deserts of North Africa.
The third type of aerosol comes from human activities. While a large fraction of human-made aerosols come in the form of smoke from burning tropical forests, the major component comes in the form of sulfate aerosols created by the burning of coal and oil. The concentration of human-made sulfate aerosols in the atmosphere has grown rapidly since the start of the industrial revolution. At current production levels, human-made sulfate aerosols are thought to outweigh the naturally produced sulfate aerosols. The concentration of aerosols is highest in the northern hemisphere where industrial activity is centered. The sulfate aerosols absorb no sunlight but they reflect it, thereby reducing the amount of sunlight reaching the Earth's surface. Sulfate aerosols are believed to survive in the atmosphere for about 3-5 days.