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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 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.
  • Massive Tornado Outbreak on Tornado Alley
    The week of May 19 brings dozens of tornadoes to Tornado Alley in the states of Oklahoma, Kansas, Io...Read more

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    Massive Tornado Outbreak on Tornado Alley

    The week of May 19 brings dozens of tornadoes to Tornado Alley in the states of Oklahoma, Kansas, Iowa, Illinois and Missouri. On May 20th, a massive tornado struck Moore, Oklahoma, devastating communities - destroying over 100 homes and hitting two elementary schools and a hospital - with many casualties and deaths. Our thoughts are with our friends and colleagues suffering from these storms. For more on the May 20th storms, see the NOAA Storm Prediction Center Storm Report.
  • Kansas Legislator Proposes Bill to Outlaw Sustainability Education
    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of ...Read more

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    Kansas Legislator Proposes Bill to Outlaw Sustainability Education

    A bill has been introduced in the Kansas legislature this week that would prohibit the promotion of sustainability. Here is a link to the one-page bill: http://www.kslegislature.org/li/b2013_14/measures/documents/hb2366_00_0000.pdf. See report on Bloomberg News.
This picture shows where Earth's North Magnetic Pole is. It also shows Earth's geographic North Pole. The two poles are not in the same place.
Click on image for full size
Original artwork by Windows to the Universe staff (Randy Russell).

Earth's North Magnetic Pole

Earth has a magnetic field with a north pole and a south pole. Earth's magnetic field is pretty much like the magnetic field around a bar magnet. Earth's North Magnetic Pole (NMP) is not in the same place as the geographic North Pole. The NMP is off the northern coast of Canada. That is several hundred kilometers (miles) from the geographic North Pole.

Earth's magnetic poles move around. The NMP moved about 1,100 km (684 miles) during the 20th century.

Compass needles point towards the NMP. Since the NMP is pretty close to the geographic North Pole, people have used compasses to find their way around for many, many years.

Some kinds of radiation in space flow along magnetic fields. Earth's magnetic field steers these particles towards Earth's magnetic poles. When the particles blast into our atmosphere, they make gases in the atmosphere glow. That's what causes the beautiful Northern Lights!

Last modified April 17, 2009 by Randy Russell.

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