Published: 
Aug 6, 2008

NASA - How to Launch the 4D Ionosphere

Ready to fly through the ionosphere? W. Kent Tobiska, president of Space Environment Technologies, offers these simple instructions:

"One, download and install Google Earth."

"Two, visit our web site and click on the link 'Total Electron Content.'"

Wait for the file to load and presto—you're flying through the ionosphere. A typical screenshot looks like this:

screenshot_strip.jpg

In addition to total electron content, the 4D model also can be configured to display available radio frequencies, maximum usable frequencies, and the critical "bounce frequency" of the ionosphere's f2-layer—terms well known to hams and other experts. The corresponding files are all available at the CAPS web site.