This site provides updated information on the National Aeronautical Science Administration's (NASA) contribution in monitoring the evolution of El Nino and its climatic consequences. The site contains an explanation of El Nino, sections about oceanographic, atmospheric and biological observations, a section about the possible teleconnection of different El Nino related anomalies, and movies and slide shows of an El Nino event. The variations of surface wind, sea level, and sea surface temperature along the equator and the west coast of the American continents are presented under the section on Oceangraphic Observations. Linkage to observations of outgoing long wave radiation, upper tropospheric water vapor, atmospheric precipitable water, precipitation, and surface temperature are provided under the section on Atmospheric Observations. The variation of ocean biological productivity will be presented under the section on Biological Observations. In addition to figures of spatial and temporal sections to summarize the variations, computer animations are also available to browse through the large number of maps.
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