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    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.
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    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 a photo of the Veracruz International Airport.
Click on image for full size
Courtesy of UCAR

Aircraft Used in the MILAGRO Campaign

The MILAGRO scientists will use six different airplanes to study air pollution around Mexico City. Each plane will have different instruments onboard that will help scientists measure air pollution. They'll fly out of the city of Veracruz, a 45-minute flight east of Mexico City.

Here are pictures of the 6 MILAGRO airplanes:


the NSF/NCAR C-130


the DOE Gulfstream 1


the DOE/NASA King Air


the NASA J-31 and

NASA DC-8


The US Forest Service Twin Otter

Scientists will also use instruments on the ground during MILAGRO.

Last modified June 17, 2010 by Becca Hatheway.

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