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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 Mars Polar Lander was lost on December 3, 1999.
Click on image for full size
Courtesy of NASA

Still Looking for Lander
News story originally written on January 10, 2000

Amongst reports that the Mars Polar Lander fell into a deep canyon, scientists are reporting the cause of the disaster is still unknown.Organizers of the mission also pointed out they knew the canyon was near the landing site. A recent article in the Post suggested scientists didn't know the canyone existed. This huge 'hole' is 30 X 8 miles with slopes greater than 20 percent. Scientists say that slopes greater than 16 percent could cause the Lander to topple over.

“It’s closer than we wanted to be,” said Richard Zurek, the mission’s project scientist. “We knew about this deep valley and the crater right from the beginning of our site selection. We knew this was an area we didn’t particularly want to set down in.”

Still, Zurek says it was the safest possible landing site. Strong winds of 75 miles per hour would be necessary from the surface to 30 miles in altitude for the spacecraft to be blown into the pit. Scientists are not ruling this out, but they believe it is more likely there was a failure aboard the craft.

“Definitely, the surface is one possible explanation of the apparent loss of the Mars Polar Lander,” Zurek said. “There’s nothing that points to that as the sole reason for that failure.”

The Mars Surveyor is mapping the area near the landing site, looking for any evidence. Until then, leaders of the mission are taking the blame. “I don’t think any of us are off the hook here,” Zurek said.

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