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Message Subject
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How were you introduced to the concept of the Chemtrail conspiracy?
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Poster Handle
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George B |
Post Content
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Contrails, by affecting the Earth's radiation balance, act as a radiative forcing. Studies have found that contrails trap outgoing longwave radiation emitted by the Earth and atmosphere (positive radiative forcing) at a greater rate than they reflect incoming solar radiation ( negative radiative forcing). Global radiative forcing has been calculated from the reanalysis data, climatological models and radiative transfer codes. It is estimated to amount to 0.012 W/m2 for 2005, with an uncertainty range of 0.005 to 0.0026 W/m2, and with a low level of scientific understanding.[4] Therefore, the overall net effect of contrails is positive, i.e. a warming effect.[5] However, the effect varies daily and annually, and overall the magnitude of the forcing is not well known: globally (for 1992 air traffic conditions), values range from 3.5 mW/m2 to 17 mW/m2. Other studies have determined that night flights are mostly responsible for the warming effect: while accounting for only 25% of daily air traffic, they contribute 60 to 80% of contrail radiative forcing. Similarly, winter flights account for only 22% of annual air traffic, but contribute half of the annual mean radiative forcing.[6] [ link to en.wikipedia.org] Quoting: George B If contrails/chemtrails had a negative effect on peoples health and they couldn't be helped or no one cared, no studies of negative or positive effect would be made. Quoting: WindyMind I think "THEY" think . . . contrails may worsen global warming . . . if so how much and what can be done about it . . . it is thought global warming is generally a BAD thing . . .
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