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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
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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.

   Image courtesy of Rhea George

From: Rhea George
Over the Southeast Pacific Ocean, November 6, 2008

Sunrise as Mission Scientist!

This photo is from the last C-130 flight I was on, from my seat in the cockpit of the plane. We had just turned around after reaching a longitude of 85 West and were on our way back to Arica. Night flights leave around 3am, and after many hours of darkness, these sunrise moments lift everyone's spirits and energy spectacularly. The coolest moment on the flight is usually right after sunrise, when the plane dips back into the cloud for more in-cloud measurements. It is hard to capture with a photograph. It gives me a sense of being immersed in the cloud, like being wrapped in a blanket.

Another really wonderful thing about this flight for me was that I was the official 'mission scientist'! A couple postcards ago I described trying out the mission scientist role, being the person communicating between the scientists and the pilots, but in that case the real mission scientist was on the plane. This time it was just me for the full 9 hours! Of course, many experienced and knowledgeable scientists were aboard, so if any problem occurred, I was not alone. We actually did have a problem -- in the first half hour of the flight, the computer system went down and we were no longer recording most of the data! I could no longer see anything on my computer about where we were, the winds, or how high and thick the clouds were! Everyone on the flight pulled together, telling each other what information they had access to, and we kept the flight going! It was a wonderful example of teamwork and dedication to science. Luckily, within an hour, a technician on board fixed the problem and things became a lot easier.

What a great experience!!

Rhea

Postcards from the Field: Climate Science from the Southeast Pacific

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