Articles | Volume 33, issue 6
Ann. Geophys., 33, 737–747, 2015
https://doi.org/10.5194/angeo-33-737-2015
Ann. Geophys., 33, 737–747, 2015
https://doi.org/10.5194/angeo-33-737-2015

Regular paper 16 Jun 2015

Regular paper | 16 Jun 2015

A comparison of overshoot modelling with observations of polar mesospheric summer echoes at radar frequencies of 56 and 224 MHz

O. Havnes et al.

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Latest update: 01 Aug 2021
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Short summary
Noctilucent clouds were observed by two radars at different wavelengths. Artificial electron heating was applied. As predicted by modelling, there is a general difference between the observations by the two radars. However, for some heater cycles we observed an exceptionally strong, rapid and similar increase in backscatter for both radars when the heater was on. Models predict a considerable difference in reaction. Our observation indicate that the charging models may not be complete.