Winter Anomalous Radio Wave Absorption Days at 32 Degrees N Latitude and Prevalent Solar Radiation.
ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
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BER 1970, January 1971, and February 1971 and used to detect the anomaly are reported here. A criterion to identify anomalous high absorption days is defined and subsequently used in conjunction with the A-1 measurements to establish the occurrence of 11 winter anomalous days. Zurich sunspot numbers and solar flux input at 8.8 GHz and 15.4 GHz are used as solar activity indicators. Days with at least one standard deviation more than the computed three months solar flux andor sunspot average are classified as solar active days. The earths daily maximum magnetic field intensity is also reported and used to identify geomagnetically active days. Of the 11 anomalous absorption days detected at 32 degrees N latitude, five were found to occur on days of enhanced solar radiation, while the other six anomalous days occurred on quiet solar days. Author
- Atmospheric Physics
- Radiofrequency Wave Propagation