Fil:Enso elnino.png

[edit] Summary

it's under PD-USGov-DOC-NOAA. EN WP says:

ENSO/El Niño state.

• Sea surface is warm in central and eastern Pacific.
• Less cold water is pulled up along west coast of South America.
• Hot air rises in central Pacific, travels east and west before cooling and descending.

Derived from NOAA / PMEL / TAO diagrams. http://www.pmel.noaa.gov/tao/proj_over/diagrams/index.html

[edit] Licensing

This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration.