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Radar observations of equatorial electrojet irregularities with a UHF wind profiler at Jicamarca: Preliminary Results

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Radar observations of equatorial electrojet irregularities with a UHF wind profiler at Jicamarca: Preliminary Results

Danny SCIPION

(1)

, Marco MILLA

(1)

, Cristiam CASTILLO

(1)

, and Julio Oscanoa

(2)

(1) Radio Observatorio de Jicamarca, Instituto Geofísico del Perú, Lima, Peru (2) Pontificia Universidad Católica del Perú, Lima, Peru

Portable low-cost CLear Air and Rainfall Estimation (CLAIRE) radar was developed at the Jicamarca Radio Observatory (JRO) that will provide tropospheric winds, turbulence, and rainfall estimations. The 445-MHz CLAIRE system consists of four Yagi-Uda phased array antennas, one for transmission and three for reception, arranged in a quasi- monostatic system.

Although CLAIRE was not designed to investigate the daytime equatorial electrojet (EEJ)

irregularities, the backscattered echoes coming from the EEJ region should be strong enough

to be detected by this radar. This opens the possibility of studying and comparing the

characteristics of the EEJ echoes at different frequencies at JRO. For this purpose, special

radar campaigns will be carried out at Jicamarca running CLAIRE and the 50 MHz JULIA

system with antenna beams pointing vertically. The Doppler shifts of the type I EEJ echoes

measured with CLAIRE will be compared with the ones obtained with the 50 MHz JULIA

system. The characteristics of the measured signals will be analyzed and described in this

presentation.

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