File:1997 El Nino TOPEX.jpgThe 1997 El Niño seen by TOPEX/Poseidon Source: http://sealevel.jpl.nasa.gov/elnino/971205.html archive copy at the Wayback Machine Description: This image
File:Visualizing El Niño (SVS287).jpgtemperature anomalies in the Pacific Ocean in August 1997 as measured by NOAA-14/AVHRR and TOPEX/Poseidon determination method: work of the federal government