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About the Model Shown above is the most recent run of the ‘Ambient’ version of the Wang-Sheely-Arge (WSA)-Enlil model of the solar wind. The sun constantly emanates an outward wind referred to as the solar wind.
NOAA / Space Weather Prediction Center Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S.
Conditions in the D region of the ionosphere have a dramatic effect on high frequency (HF) communications and low frequency (LF) navigation systems.