Tag: image sources

Calvin and Hobbes search engine

The Complete Calvin and Hobbes is a wonderful resource.

Calvin and Hobbes is one of the most deeply interesting and intellectually hilarious comics. It ran from 1985 to 1995 when Bill Watterson decided it was time to stop, so it retained a persistent quality throughout its run. Watterson was very serious about the newspaper comic form and did a lot of experimenting with C&H. His thoughts are nicely documented in the paper collections.

Though I have the books, it’s nice to have archives of the entire series online. Even better, Michael Yingling recently created a Calvin & Hobbes Search Engine that can find key words in the dialogue, so now you can quickly find that more obscure script to brighten up your day.

I really hope that Yingling has finessed the copyright issues because this is a great resource for teachers looking for that little something to spark the imagination. The strips often go into issues at such depth that some of the series make great examples for literature discussions. I find the issues resulting from the transmogrifier/duplicator to have a powerful, though more light hearted, equivalency to the novel Frankenstien. I also am partial to the philosophical world-view of Calvin’s father.

Nashville flooding and mid-latitude cyclones

Nashville, TN, May 4, 2010. (photo by David Fine/FEMA)
Daily weather map for May 2nd, 2010. Note the cold front heading toward Nashville. Map from the Hydrometeorological Prediction Center.

Over 30 cm of rainfall in just two days resulted in extensive flooding in Nashville, TN, last week. The precipitation was produced by one of those typical mid-latitude cyclones that sweep across the United States, from west to east, every spring and fall. The Boston Globe has some amazing picture of the flooding.

The news media tends to have the most dramatic photographs of disasters, but the Federal Emergency Management Agency (FEMA) also tends to have good images from their aerial surveys (like the image at the top of this post). And images produced by the government are in the public domain so you don’t have to worry about using them.

May 2-6 fronts. Animation generated using images from the HPC.

For discussing warm fronts, cold fronts and mid-latitude cyclones, NOAA‘s Hydrometeorological Prediction Center (HPC) is a great resource. You can find an archive of daily weather maps for the U.S. that you can click through to see the fronts move.

Infra-red satellite image of the continental U.S.. Note the alignment of the clouds and precipitation with the fronts in the first (static) weather map above. (Image from GOES).

Satellite imagery usually complements to the frontal weather maps very well. Most satellites orbit around the Earth pretty quickly, at just the right orbital speed that the centrifugal force just balances the Earth’s gravity so the satellite does not crash into the atmosphere or escape into space. Some satellites are set into orbit a bit further out so that they can rotate with the Earth, effectively staying above the same place all the time. NOAA has a few of these geostationary satellites monitoring the weather around the world, and you can get real-time images from the Geostationary Satellite Server. There used to be archived satellite images but I can’t seem to find them at the moment.