Friday, January 7, 2011

Cloud seeding

The recent flooding in New-Brunswick initiated my research on weather. Not actively looking but still curious about it, I found some information regarding environmental alteration, using Cloud seeding, while reading an article about WW II.

Cloud seeding is the process in which material, such as Dry Ice or Silver Iodide, is released in the atmosphere to alter the life cycles of clouds. Producing more/less rain/snow/clouds.

Cloud seeding experiments was first introduce in 1903 and further developed in times of wars to render the movements, of soldiers, difficult.

“There is statistical evidence for seasonal precipitation increases of about 10% with winter seeding.” -wikipedia

Cloud Seeding and Weather alteration from human activities in recent years
“The potential of condensation trails(contrails) from jet aircraft to affect regional-scale surface temperatures has been debated for years, but was difficult to verify until an opportunity arose as a result of the three-day grounding of all commercial aircraft in the United States in the aftermath of the terrorist attacks on 11 September 2001. Here we show that there was an anomalous increase in the average diurnal temperature range (that is, the difference between the daytime maximum and night-time minimum temperatures) for the period 11–14 September 2001. Because persisting contrails can reduce the transfer of both incoming solar and outgoing infrared radiation and so reduce the daily temperature range, we attribute at least a portion of this anomaly to the absence of contrails over this period.”

“Clouds were seeded during the 2008 Summer Olympics in Beijing using rockets, so that there would be no rain during the opening and closing ceremonies.”

There’s never been any doubt that we effect weather with our human activities. However, I was surprised to learn that there was also research done on modifying the weather.
Could a recent, not shown publicly, Cloud Seeding activity be the cause of the recent flooding? Is it natural or cause by us?

Comment away!



Atmos Washington

No comments:

Post a Comment

Back to Top