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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.
The HIAPER research aircraft in flight
Click on image for full size
Courtesy of NCAR/National Science Foundation

Flying from Pole to Pole to Measure Greenhouse Gases
News story originally written on January 7, 2009

HIAPER, one of the nation's most advanced research aircraft, is scheduled to embark on an historic mission spanning the globe from the Arctic to the Antarctic.

Starting Jan. 7, 2009, the HIAPER Pole-to-Pole Observations (HIPPO) mission will cover more than 24,000 miles as an international team of scientists makes a series of five flights over the next three years sampling the atmosphere in some of the most inaccessible regions of the world.

The goal of the mission is ambitious--the first-ever, global, real-time sampling of carbon dioxide and other greenhouse gases across a wide range of altitudes in the atmosphere, literally from pole-to-pole.

To date, much of our understanding of global atmospheric greenhouse gases has been acquired from ground-based observations, distant satellites, balloon launches, or highly sophisticated supercomputer models. HIAPER's pole-to-pole mission will, for the first time, give scientists real-time global observation data to correlate with those climate models.

HIAPER is short for the National Science Foundation's High-performance Instrumented Airborne Platform for Environmental Research. A modified Gulfstream V jet, it can fly at high altitudes for extended periods of time and can carry 5,600 pounds of sensing equipment, making it a premier aircraft for scientific discovery.

HIPPO is a joint project funded by the National Science Foundation and the National Oceanic and Atmospheric Administration and involving researchers from Harvard University, NSF's National Center for Atmospheric Research and the Scripps Institution of Oceanography.

Text above is courtesy of the National Science Foundation

Last modified February 13, 2009 by Lisa Gardiner.

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