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  • Irish Chronicles Document Links Between Volcanoes and Weather
    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong corr...Read more

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    Irish Chronicles Document Links Between Volcanoes and Weather

    A study of over 40,000 written entries in Irish Annals and ice core measurements shows a strong correlation between the occurrence of volcanic eruptions and extreme cold weather in Ireland over a 1200 year period. Data analyzed in this study cover the period from 431 to 1649, during which time up to 48 volcanic eruptions are identified in Greenland ice core records through deposition of volcanic sulfate in annual layers of ice. You can find the study (open access), published on 6 June 2013 in IOP Publishing's journal Environmental Research Letters, at http://iopscience.iop.org/1748-9326/8/2/024035/article. Find out more about how volcanoes can influence climate.
  • EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US
    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, acco...Read more

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    EF-5 Tornado in El Reno, Oklahoma Widest Ever Recorded in US

    The EF-5 tornado that hit El Reno, Oklahoma on May 31st was the widest ever recorded in the US, according to the National Weather Service in Norman Oklahoma. The tornado, which remained on the ground for 40 minutes and reached 2.6 miles across (4.2 km), took the lives of 18 people including storm chasers Tim Samaras, Paul Samaras and Carl Young. For more information on the tornado, visit http://ow.ly/i/2hfDG.
  • Atmospheric CO2 Level Tops 400 ppm
    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm rep...Read more

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    Atmospheric CO2 Level Tops 400 ppm

    During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well. The level of atmospheric greenhouse gases continues to increase, now over 120 ppm since the Industrial Revolution began. For more on the Keeling Curve, see http://keelingcurve.ucsd.edu/. Find out more about greenhouse gases and warming.
This is an artist's impression of how Rosetta will look when it releases its lander which will land on a comet nucleus.
Click on image for full size
Courtesy of European Space Agency

Rosetta Mission Update
News story originally written on January 21, 2003

The Rosetta Mission was suppose to launch in January 2003. Unfortunately, the launch had to be delayed!

The Rosetta spacecraft was suppose to be launched on an Ariane 5 rocket. A month ago, another Ariane 5 rocket blew up! Just to be safe, the European Space Agency (ESA), which is managing the Rosetta mission, chose to delay the mission until a new rocket is tested and proven safe.

Rosetta missed its launch window. This means it cannot meet up with comet Wirtanen as was planned. The ESA is in the process of finding other comets that Rosetta might meet with. The Rosetta spacecraft is actually made of two parts: an orbiter, which will approach the chosen comet and then circle it, and a lander, which will touch down on the comet.

Rosetta is certainly taking a new direction than was first planned. It will still be the first mission to have a lander which will touch down on a comet. And the scientists and engineers working on the Rosetta mission are sure Rosetta will become a success! Given time, Rosetta will still study a given comet in detail, in hopes that this will lead to new scientific findings about all comets and thus about the formation of our solar system.

Last modified November 10, 2003 by Jennifer Bergman.

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