Green Options

NASA has released the first ever images of mysterious polar night clouds that form 50 miles above Earth’s surface, and says that they might be linked to global warming.

The startling images were captured by NASA’s “AIM” satellite (Aeronomy of Ice in the Mesosphere), and show night clouds above 70 degrees north latitude on May 25. Since then, eyewitnesses on the ground have reported seeing the formations on June 6 over Northern Europe (see image after the jump).

When viewed from space, the mysterious clouds are known scientifically as Polar Mesospheric Clouds, or PMCs, when seen from the ground they are called Noctilucent or “night-shining” Clouds.

Fourty percent or more of the Amazon rainforest will be “decimated” by the middle of the next century even if we cut all CO2 emissions by 2050, said the UK Met Office. The finding was presented this past month in Copenhagen, which is preparing to host the UN Climate Change Conference in December.

In this satellite image of deforestation in Brazil, tropical rainforest appears bright red, while pale red and brown areas represent cleared land. Black and gray areas have probably been recently burned.

Predicting the Weather with Clouds

(This is a simple and quick explanation; I am not going into too much detail. Here is a great site about using clouds to predict the weather, or better yet, pick up a book from the library!)

1. Look at the sky! If you don’t see any clouds the weather is fine. If you see clouds, try and identify them.

2. Determine in which category the clouds fit. (These categories are high clouds, middle clouds, low clouds and clouds with vertical growth.)

3. Grab your book or go to this website to determine the shape and type of the cloud.