Archive for September, 2009
Caution urged over cloud seeding
by qbit on Sep.23, 2009, under In the News, What are they?
scidev.net
Scientists who have produced the first robust proof that cloud seeding can increase long-term rainfall are urging developing countries considering the technology to be cautious.
Cloud seeding involves injecting clouds with chemicals that encourage water vapour to form ice crystals heavy enough to fall, melting on their way to produce rain. Chemicals can be injected into clouds using aircraft or by launching rockets.
The researchers — led by Steven Siems, an associate professor from Monash University, Australia — examined more than four decades of cloud seeding experiments in Tasmania and found rainfall was at least five per cent higher over seeded areas.
But co-author Anthony Morrison points out that clouds in Tasmania contain vast amounts of supercooled liquid water and are unusually clean — making them particularly suitable for cloud seeding.
And Siems wants more research, saying, ”There could be other explanations for the increased rainfall — although we suspect that cloud seeding is a significant contributor.”
He told SciDev.Net that promoting cloud seeding to developing countries is “probably not a good thing to do”.
“There are many, many unscrupulous people in the field of weather modification who up until now have promoted some methods without any proper scientific evidence. Developing countries are particularly at risk here,” says Siems.
The technique ”remains controversial, especially because in the early days unrealistic claims were made about its success”, says Johannes Verlinde, associate professor of meteorology at US-based Pennsylvania State University.
Another reason for the controversy, he says, is that no two clouds are alike, making it difficult to compare clouds to prove it really works.
Siems cautions that developing countries should carefully consider whether cloud seeding is right for them and avoid other unproven techniques.
Roelof Bruintjes, of the National Centre for Atmospheric Research in Colorado, United States, agrees, and says that there are many companies promoting techniques such as ‘ionisation’ — where charged particles in the air are claimed to act as nuclei for rain drops to form — that have not been scientifically proven.
The problem, he says, ”is that people are desperate and in some cases are willing to try anything”.
However, he also says cloud seeding may be an economical way to enhance water resources in some developing countries. Bruintjes’ own organisation is helping Mali monitor cloud seeding experiments.
But he “would advise all governments considering cloud seeding to conduct tests first to see if it is going to work for their country”.
The research was published in the June issue of the Journal of Applied Meteorology and Climatology.
Link to abstract in the Journal of Applied Meteorology and Climatology
References
Journal of Applied Meteorology and Climatology 48, 1267 (2009)
Predictive programming: “Toxic Skies” movie [update]
by qbit on Sep.23, 2009, under In the News, Morgellon's
Pop culture and media is often used to pre-emptively alter public perception of a real threat by presenting it in a fictional context. This is a preview to a movie starring actress Anne Heche, called Toxic Skies, which was aired Monday on Australian TV. (via Leo K)
Plot spoiler: Thanks to the commentor below, I finally was able to view this made-for-tv movie. Here’s a plot summary: Anne Heche’s character is a doctor who works for the World Health Organization. She is drawn into the chemtrails conspiracy by a patriot character who has been studying the chemtrails conspiracy and who’s brother was suicided because he knew too much.
Eventually Anne Heche and her patriot friend figure out that an evil drug company has been contracted to make the jet fuel additive, and the government has been adding the chemicals to the jet fuel. however the government intended to fight global warming by increasing cloud cover. Said drug company had been secretly modifying the chemicals to weaken peoples’ immune systems and create the conditions for a pandemic outbreak. The drug company had a secret vaccine for the virus all along but wanted to kill everyone else for profit or some other reason. After some heroic action scenes, the good guys steal the vaccine from the drug company and use it to save everyone (even people who are already infected).
In a related matter…
If this episode of The Lone Gunmen (a spinoff of the Fox network’s X-Files) bears any similarity. We should carefully analyze the propaganda in Toxic Skies. This episode of Lone Gunmen involves hijacking planes by remote control and flying them into the Word Trade Center complex as a pretext to wage war of aggression and profit. This aired in March of 2001. The first time I saw this it made my hair stand up.
The beauty of having this in a “conspiracy theory” show is that later the general public, with their poor memories and lack of critical thinking skills, will conflate this plot with alien abduction, wherewolves and other moon-bat conspiracy theories, thereby discrediting any doubt of the official story of 9/11.
A similar tactic is being applied in Toxic Skies.
NASA Rocket to Create Clouds Tuesday
by qbit on Sep.14, 2009, under Optical Phenomena
By Clara Moskowitz,
Science News
posted: 14 September 2009 12:21 pm ET
A rocket experiment set to launch Tuesday aims to create artificial clouds at the outermost layers of Earth’s atmosphere.
The project, called the Charged Aerosol Release Experiment (CARE), plans to trigger cloud formation around the rocket’s exhaust particles. The clouds are intended to simulate naturally-occurring phenomena called noctilucent clouds, which are the highest clouds in the atmosphere.
“This is really essentially at the boundary of space,” said Wayne Scales, a scientist at Virginia Tech who will use computer models to study the physics of the artificial dust cloud as it’s released. “Nothing like this has been done before and that’s why everybody’s really excited about it.”
The experiment is the first attempt to create artificial noctilucent clouds. A previous spacecraft, called Aeronomy of Ice in the Mesosphere (AIM), launched in 2007 to observe the natural clouds from space.
CARE is slated to launch Tuesday between 7:30 and 7:57 p.m. EDT (2330 and 2357 GMT) from NASA’s Wallops Flight Facility in Virginia.
Noctilucent means “night shining” in Latin. Although difficult to spot with the naked eye, the clouds are best visible when Earth’s surface is in darkness and sunlight from below the horizon illuminates the high-altitude clouds.
These clouds, also known as polar mesospheric clouds, are made of ice crystals. The natural ones tend to hover around 50 to 55 miles (80 to 90 km) above the Earth. CARE will release its dust particles a bit higher than that, then let them settle back down to a lower altitude.
“What the CARE experiment hopes to do is to create an artificial dust layer,” Scales told SPACE.com. “Hopefully it’s a creation in a controlled sense, which will allow scientists to study different aspects of it, the turbulence generated on the inside, the distribution of dust particles and such.”
CARE is a project of the Naval Research Laboratory and the Department of Defense Space Test Program. The spacecraft will launch aboard a NASA four-stage Black Brant XII suborbital sounding rocket.
Scientists will study its progress from ground based instruments as well as the STP/NRL STPSat-1 spacecraft in Earth orbit. Researchers will track the CARE dust cloud for days or even months to study its behavior and development over time.
Because the optical observations are crucial, the launch can only take place if the weather is clear both at the launch site and at multiple observation stations along the Atlantic coast and in Bermuda.
If CARE cannot launch Tuesday, the team can try again between Sept. 16 and Sept. 20.

This image shows one of the first ground sightings of noctilucent clouds in the 2007 season over Budapest, Hungary on June 15, 2007. Credit: Veres Viktor

Noctilucent clouds over Mt. Sabalan, a 15,784 ft extinct volcano in northwestern Iran. Credit: Siamak Sabet

Noctilucent clouds over northern Europe. Credit: Pekka Parvianien.

