Fig. 3.From: Mesosphere summer echoes observed with the SuperDARN Hokkaido HF radar at Rikubetsu, Japan (43.5°N)(a) Altitude-time plot of VHF radar SNR, (b) RTV plot on HF radar beam 1, and (c) horizontal wind vectors (averaged over 18 min) as a function of altitude and time on 30 June 2009. The VHF-MSE areas in (a) are marked by rectangles in (c). (d) Altitude-time plot of VHF radar SNR and (e) RTV plots on HF radar beams 0, 2, 12 and 14 on 29 June 2009.Back to article page