Current Events

  • 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 is an image of Uranus.
Click on image for full size
Image from: NASA

Uranus' Mesosphere

The mesosphere of Uranus is a region of balance between warming and cooling. That essentially means that nothing happens there. Except for diffusion, the atmosphere is still. Upper reaches of the atmosphere, such as the mesosphere, can sometimes be detected by looking at the limb of a planet, as shown in this image. Unfortunately, nothing of the mesosphere can be seen in this image. For a picture showing how the temperature changes in the mesosphere, click here.


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Cool It! Game

Check out our online store - minerals, fossils, books, activities, jewelry, and household items!...more

Diffusion

Diffusion means the slow steady movement of individual molecules from one region to another. As solid as a pane of glass can seem, molecules of air can easily diffuse, or pass through the glass. This can...more

Uranus' Mesosphere Temperature Profile

This is the temperature profile of Uranus' mesosphere. The temperature is the same at all heights until the mesopause, or "top" of the mesosphere is reached. As shown in the figure, the mesopause is placed...more

An Overview of Uranus' Atmospheric Structure

As on Earth, the atmosphere of Uranus consists of a troposphere, stratosphere, mesosphere, and thermosphere. The troposphere is the region where the visible clouds are to be found. The stratosphere, as...more

Uranus' Atmospheric Hazes

Besides methane, Uranus' atmosphere contains more sophisticated atmospheric molecules such as ethane gas, acetylene, and diacetylene. All these molecules form layers of haze at different altitudes high...more

Uranus' Mesosphere

The mesosphere of Uranus is a region of balance between warming and cooling. That essentially means that nothing happens there. Except for diffusion, the atmosphere is still. Upper reaches of the atmosphere,...more

Altitude Variations of the Belts & Zones

On Uranus, as on Jupiter, the winds in the belts and zones blow first in one direction, then in the opposite direction. Wind blows east in a belt, and west in a zone. The clouds rise up in a belt, and...more

Why Uranus looks like a "bullseye"

The striped cloud bands on Uranus, like Jupiter, are divided into belts and zones. On Uranus the belts and zones are hard to distinquish. The left picture shows the north pole of Uranus. In this picture...more

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