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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.
The Voyager team stands behind a model of the Voyager spacecraft. Project Manager, Ed Massey, stands at the far left.
Click on image for full size
Courtesy of NASA/JPL

Missions Possible!
News story originally written on April 12, 2002

The servicing mission to the Hubble Space Telescope in early March was a great success. The Telescope has been declared healthy and fit...and is better than ever! Though instruments will be tested for the next two months, routine science observations are being taken even now. And once the new Advanced Camera for Surveys (ACS) starts observing in early May, you can expect some images that are out of this world!

The Shuttle Columbia took astronauts to visit the Hubble and during five space walks, astronauts were able to service the Telescope. Another maintenance mission was done on the Voyager 1 spacecraft...but this time maintenance took place from Earth, because Voyager 1 is 7 billion miles away! This spacecraft was launched in 1977 and was slated as a 4-year mission. In 2002, Voyager 1 was still going strong, but needed a new position-sensing system, including a Sun sensor and star tracker. Luckily a back up was placed on the spacecraft when it was built. The current Voyager team activated this sensing system which has been working successfully since April 1, 2002.

In other mission news, Cassini has successfully completed a course adjustment and is well on its way to Saturn. Cassini was launched in October 1997 and will arrive at Saturn on July 1, 2004. Just two years to go!

Last modified April 12, 2002 by Jennifer Bergman.

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