MidLatitude Summer Anomaly

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Mid-Latitude Summer Anomaly
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The Northeast Asia Anomaly is featured by a
greater nighttime electron density poleward of
30o-40o geographic latitude
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June 2007
The Northeast Asia Anomaly is seen at 135oE
1000-2200 LT
Before 1800 LT, stronger densities are seen at
equatorward but at poleward after 2000 LT.
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COSMIC RO
COSMIC TBB Tomography from Thampi and Yamamoto.
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Ionosonde observation at nothern Japan 45.4oN,
141.7oE greographic and 35.4oN geomagnetic
latitude
Figure from Thampi and Yamamoto.