viernes, febrero 06, 2009

Mi primera nota de prensa para AGU

Global warming may delay recovery of stratospheric ozone

Increasing greenhouse gases could delay, or even postpone indefinitely the recovery of stratospheric ozone in some regions of the Earth, a new study suggests. This change might take a toll on public health.

Darryn W. Waugh, an atmospheric scientist at Johns Hopkins University in Baltimore, and his colleagues report that climate change could provoke variations in the circulation of air in the lower stratosphere in tropical and southern mid-latitudes — a band of the Earth including Australia and Brazil. The circulation changes would cause ozone levels in these areas never to return to levels that were present before decline began, even after ozone-depleting substances have been wiped out from the atmosphere.

"Global warming causes changes in the speed that the air is transported into and through the lower stratosphere [in tropical and southern mid-latitudes]," says Waugh. "You're moving the air through it quicker, so less ozone gets formed." He and his team present their findings in the Feb. 5 Geophysical Research Letters, a publication of the American Geophysical Union (AGU).

Dan Lubin, an atmospheric scientist who has studied the relationship between ozone depletion and variations in the ultraviolet radiation that reaches the Earth, says Waugh's findings could bode ill for people living in the tropics and southern mid-latitudes.

If ozone levels never return to pre-1960 levels in those regions, "the risk of skin cancer for fair-skinned populations living in countries like Australia and New Zealand, and probably in Chile and Argentina too, will be greater in the 21st century than it was during the 20th century," says Lubin, who is at Scripps Institution of Oceanography in La Jolla, Calif. and did not participate in the research.

El resto, aquí.

3 comentarios:

Aitzol dijo...

Esto es una intromision en toda regla.

Me llamo Aitzol, y no, no nos conocemos de nada. El caso es que estaba dando vueltas por la red, buscando a gente española que viviese en washington dc...

Acabo de venirme aqui a pasar unos meses por curro, pero como vivo y trabajo en gaithersburg, no encuentro manera de conocer a nadie y ya me aburoooooo mogollon!

Se que es echarle mogollon de morro, y de echo me da mogollon de verguenza. Pero no se, si algun dia quedas con algun spanish (o no spanish) y te apetece conocer a gente nueva, yo estaria encantado, y te lo agradeceria mogollon!

te dejo mi email (aitzolgarcia@gmail.com), si pasas, no te preocupes, ni me contestes ni na, ni te comas el tarro un segundo.

Por cierto veo que eres periodista cientifica (guau!) yo supuestamente soy (o voy para) cientifico. Estoy currando en el NIST.

Un saludo,

y perdona por meterme donde no me llaman!

bye!

Aitzol dijo...

donde dije "de echo" digo "de hecho" perdon!

Juan dijo...

Primera vez que entro en tu blog y parece interesante. Lo seguiré con interes :)