Talk:Cloud seeding

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Contents 1 Health Effects 2 cloud seeding 3 Vietnam 4 Cleanup 5 Meteorology tagging, after nearly two years 6 Cloud seeding practice and health effects

[edit] Health Effects

I first remember hearing about cloud seeding as a child in the late 50's. Since then the subject seems to have disappeared. I would like to know if cloud seeding is still done? I'm also curious about whether there has been any studies regarding the possibility (or lack of it) of long term health problems resulting from cloud seeding. Considering the increase in asthma and other chronic conditions plaguing our Baby boom generation and our children it seems that we should be questioning processes that were done in our lifetime such as cloudseeding, christmas tree fire retardence, mass vaccinations, etc. that may have seemed like a good thing to do at the time but may have resulted in unknown long term health affects.

I could've sworn I read that it was a widespread practice in China, so much so that they were fighting over who owned the best clouds. They use artillery, rockets, and planes to deliver the chemicals. This ring a bell for anyone?-LtNOWIS 23:08, 22 Jan 2005 (UTC)

Does anyone have any information on the health effects of this? That was the first thing I thought of when I read this: (Xinhua News). Andy 11:29, 6 May 2006 (UTC)

The Russians apparently used Lead Iodide, rather than silver Iodide. The health implications though are minimalistic when it is considered that over a square kilometre, the silver iodide used in aerial cloud seeding would be approx. a tablespoon.

[edit] cloud seeding

I'm a young kid but i still know alittle about cloud seeding it has been proven many cases that it is safe and ok the only thing that really sticks in my brain is in march 22, 1998 when cloud seeding helped a fire that got out ahand.I also know even some of the bad cases are because they can't measure the precipiatation levels in the cloud even with all our new computers and stuff.

                        Thanks a fellow 8th grader in Grundy center,Iowa

[edit] Vietnam

Didn't we use cloud seeding during the Vietnam war to keep NVA supply lines muddy? I think I heard this somewhere, but can't verify it.

141.213.251.164 18:37, 27 March 2006 (UTC)

[edit] Cleanup

See WP:CONTEXT. This article was targetted by a user [1] for overlinking. It has been tagged for cleanup and will be cleaned up as time permits. Anyone willing to go ahead and remove the excessive linking before I get back to it will be greatly permitted as many articles were overlinked and only now just discovered. --Crossmr 07:22, 18 June 2006 (UTC)

[edit] Meteorology tagging, after nearly two years

This should help in your efforts to clean up the page. There is a bit of a movement within meteorology and hurricane projects to upgrade their pages. Now that they know of its existence, it should be whipped into shape. Thegreatdr 21:26, 23 October 2006 (UTC)

[edit] Cloud seeding practice and health effects

Cloud seeding is indeed done today, by about 24 countries and eleven Western states - see http://www.naiwmc.org for a map of the Western U.S. and Canada states/provinces.

The health effects from silver deposited from silver iodide seeding are indeed minimal, and no studies have shown any silver contents in the environment above background levels. You will have much more exposure to silver from tooth fillings than from cloud seeding! Much research on the environmental and health effects of seeding were done over 20 years ago, because funding for cloud seeding research in general has declined precipitously since that time.

Another big myth about cloud seeding is that it causes precipitation decreases downwind of the area that is seeded. This is called the "Robbing Peter to Pay Paul" effect. It is discussed for winter seeding by an FAQ at http://www.wet-intl.com/faq.html . The bottom line is that there has been no evidence for decreases downwind of seeding target areas, but some evidence for increases as much as 100 miles downwind.

There is still controversy about whether cloud seeding really works, in large part because of the lack of scientific research. The National Academies of Science National Research Council studied the field in 2003 and concluded that there is a great need for a national research program to clear up remaining questions. Nevertheless, three professional societies (American Meteorological Society (AMS), Weather Modification Association, and World Meteorological Organization) agree that the best evidence for effectiveness is with winter cloud seeding to augment snowfall over mountains. In fact, the AMS even states that there is good evidence to support 10% increases in snow water seasonally. —The preceding unsigned comment was added by Esteban9 (talk • contribs) 22:45, 4 December 2006 (UTC).