Incoherent scatter radars, such as the one at
Jicamarca, are a powerful tool to measure ionospheric
electric fields. However, incoherent radar
measurements are not available at all times because
of high operating cost and/or because unfavorable
nighttime ionospheric conditions (collectively
known as equatorial spread-F instabilities) may
affect data acquisition and derivation of ionospheric
plasma parameters. Since 2001, the Jicamarca radar
has run a coherent scatter mode during the daytime,
from 0800 to 1600 LT (corresponding to 1300–2100
UT), which makes continuous measurements over
many days and even months possible. The equatorial
F region E B drifts used in this paper are
determined from the Doppler shifts of 150-km
echoes (Chau and Woodman, 2004).
Incoherent scatter radars, such as the one at
Jicamarca, are a powerful tool to measure ionospheric
electric fields. However, incoherent radar
measurements are not available at all times because
of high operating cost and/or because unfavorable
nighttime ionospheric conditions (collectively
known as equatorial spread-F instabilities) may
affect data acquisition and derivation of ionospheric
plasma parameters. Since 2001, the Jicamarca radar
has run a coherent scatter mode during the daytime,
from 0800 to 1600 LT (corresponding to 1300–2100
UT), which makes continuous measurements over
many days and even months possible. The equatorial
F region E B drifts used in this paper are
determined from the Doppler shifts of 150-km
echoes (Chau and Woodman, 2004).
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