Mexico City Fights Smog by Electrifying Air

A new experiment in Mexico City is attempting to control rampant air pollution by injecting electricity into the air.

Start Date: 2/10/99

A brief "Earth Alert" report at Discovery Channel Online:
(http://www.discovery.com/news/earthalert/990104/smogmexico.html)
dated January 8, 1999, states that:

Mexico City has begun an experiment in smog control that involves "controlled injection of free electrical charges in the atmosphere, through large antennas."

Mexico's capital is infamous for its suffocating air pollution, brought about in part by poorly regulated emissions of millions of cars, and made worse by the surrounding geography which tends to capture polluted air in a large "bowl" directly above the high-elevation city.

Now, according to a January 7 announcement by Mexico's environmental ministry, the new electrical technology seems able to substantially reduce ozone pollution in the air. A test last October resulted in the lowest air ozone levels since 1986, the ministry said. The technology is said to manipulate weather conditions, creating cleansing rains or winds to sweep away the pollution, the ministry said.

GSReport has learned that Mexican authorities have explored several novel approaches to such weather and smog control during the decade of the 1990s. Success in Mexico City may lead to similar experiments in other heavily polluted cities.

Atmospheric and Space Electricity [AE]

AE11B-02 INVITED 08:45h

Active Experiments on Artificial Air Ionization to Check the Physical Mechanism of Air Electrification by Radon in Seismically Active Area

* Pulinets, S A (pulse@geofisica.unam.mx) , Institute of Geophyscis, UNAM, Ciudad Universitaria, Delegacion Coyoacan, Mexico City, DF 04510 Mexico

Pokhmelnykh, L A (pokhlev@elat.com.mx) , ELAT company, Guerrero 3-3, Col. Del Carmen, Mexico City, DF 04100 Mexico

Domingues, M (mariodom@elat.com.mx) , ELAT company, Guerrero 3-3, Col. Del Carmen, Mexico City, DF 04100 Mexico

Bisiacchi, G (bisiacch@puide.unam.mx) , Aragon Technological Center, UNAM, Av. Hacienda de Ranch Seco s/n, Nezahualcoyotl, Edo de Mexico, Mexico City, 57130 Mexico

The air ionization in troposphere leads to formation of the large charged clusters of the aerosol size due to water molecules attachment to the new formed ions. This process have several consequences leading to the changes of the air conductivity, formation of large scale space charges and large scale electric field, changes of the air temperature and relative humidity.

All these effects were observed experimentally within the interval of two weeks before the strong earthquakes such as Colima earthquake in Mexico (M7.8) on 22 of January 2003, or Parkfield earthquake in USA (M6) on 28 of September 2004. In the case of earthquakes the atmosphere electricity modification is ascribed to the radon ionization and the effects are calculated within the frame of the seismoionosphere coupling model. But there are very few systematic sources of the radon monitoring, so the real check of the model is better possible within the frame of the controlled active experiment.

Such experiments of the artificial ionization were conducted in Mexico using the large wire antennas producing the air ionization by applying the large electric potential (~ 40 kV) to the elevated circular thin wire of ~ 100 m diameter. It was demonstrated that such impact on the atmosphere can create the effects of the meteorological scale producing the artificial clouds (and rains), and even modify the large scale atmospheric formations as typhoons. Results of the theoretical estimations and active experiments will be demonstrated.

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