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| Ever since the United
states launched its first weather satellite in 1960, the world has been
able to obtain meteorological data remotely by observing the earth from
high above. With regard to El Nino and the behavior of the equatorial
Pacific, a system of moored and drifting buoys, tide gauge stations and
voluntary observing ships passing through the region relay information
to satellites passing overhead. This information can be downloaded
electronically and used to map the Pacific with respect to atmospheric
pressure, sea surface temperature, current direction and magnitude, and
wind speed. In this way climate scientists obtain useful data and
build sophisticated models that attempt to forecast the weather and the
future of the ENSO cycle. You can have access to this same data simply
by visiting governmental sites such as NOAA
(National Oceanic and Atmospheric Administration) and NCDC
(National Climate Data Center).
Satellite imagery is used in concert with the remote data collected by deployed equipment. Sophisticated camera arrays and sensors able to interpret a large portion of the electro- magnetic spectrum yield data on primary productivity (chlorophyll concentration), sea surface temperature, the slope of the ocean, rainfall and snowfall distribution among others. These eyes in the sky allow scientists to monitor and track extreme weather events such as hurricanes. Satellites are more than an early warning system; the data they provide have allowed scientists to address question that were difficult to answer based on ordinary data collection methods. Check it OUT! |
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