# The RUNE Experiment--A Database of Remote-Sensing Observations of Near-Shore Winds
## 2 Site and Instruments
### Timeline of the Campaign  
The RUNE campaign started at the beginning of November 2015 and lasted until the end of February 2016. Four different phases were distinguished during the measurement campaign, based on the different scanning patterns in which the WindScanners were configured and described in Table 2. During phase 1, the lidars were calibrated using fixed targets and the scanning trajectories were prepared. During alignment and trajectory coding, all three WindScanners were used in a Plan Position Indicator (PPI) scenario at one elevation angle (see Section 3.1 for details). During this short phase, the area experienced several winter storm events.  
Phase 2 started on November 26, when Vara (pos. 2) was setup in a PPI scenario at three elevation angles (Section 3.1), whereas Koshava (pos. 1) and Sterenn (pos. 3) follow trajectories in a synchronized manner, hereafter referred to as 'dual setup' (Section 3.2). During a repair following a major hardware failure experienced by Koshava, the dual-setup trajectories were modified to reduce the spatial distance between range gates. This period is referred to as phase 3. Due to the hardware failure, the operational availability of both Koshava and Sterenn is low (see Table 2).  
During the final period, phase 4, Vara (pos. 2) was setup in a PPI scenario covering an azimuthal angle of 120\({}^{\circ}\) at an elevation angle of \(\approx\)0\({}^{\circ}\). The two other WindScanners were used in a range height indicator (RHI) mode and because their trajectories were configured so that they matched at a point 5 km west of position 2, the matching vertical positions can be used as a 'virtual' mast (Section 3.3).  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \multirow{2}{*}{**Phase**} & \multirow{2}{*}{**System**} & **Start Time** & **End Time** & **Scenario** & **Data** & **Operational** \\  & & **Day/Month** & **Day/Month** & **Type** & **(h)** & **Availability (\%)** \\ \hline \multirow{3}{*}{1} & Vara & 13/11 & 26/11 & PPI 1 & 251.5 & 79.25 \\  & Sterenn & 17/11 & 27/11 & PPI 1 & 215.8 & 92.83 \\  & Koshava & 17/11 & 24/11 & PPI 1 & 145.9 & 91.99 \\ \hline \multirow{3}{*}{2} & Vara & 26/11 & 17/02 & PPI 3 & 1575.2 & 79.38 \\  & Sterenn & 03/12 & 25/12 & dual v1 & 193.7 & 36.60 \\  & Koshava & 03/12 & 25/12 & dual v1 & 193.7 & 36.66 \\ \hline \multirow{3}{*}{3} & Sterenn & 25/12 & 17/02 & dual v2 & 1095.7 & 85.15 \\  & Koshava & 25/12 & 17/02 & dual v2 & 1056.7 & 82.12 \\ \hline \multirow{3}{*}{4} & Vara & 17/02 & 29/02 & PPI 1 & 269.7 & 91.91 \\  & Sterenn & 17/02 & 29/02 & RHI & 281.1 & 98.67 \\  & Koshava & 17/02 & 29/02 & RHI & 290.9 & 99.06 \\ \hline \multirow{3}{*}{All} & Alize & 09/11 & 29/02 & VAD & 2625 & 97.52 \\  & Bura & 12/11 & 28/02 & VAD & 2211 & 85.01 \\  & 3E & 01/11 & 02/03 & VAD & 2928.7 & 99.22 \\  & WL566 & 01/11 & 29/02 & VAD & 2792.7 & 96.61 \\  & Lidar buoy 6 & 04/11 & 07/12 & VAD & 792 & 99.96 \\  & Lidar buoy 7 & 11/02 & 30/03 & VAD & 622.7 & 53.61 \\ \hline \multicolumn{6}{l}{PPI = Plan Position Indicator, VAD = Velocity Azimuth Display, RHI = Range Height Indicator.} \\ \end{tabular}
\end{table}
Table 2: Description of the measurement phases during the RUNE campaign. At each phase, operational availability is defined as the hours of acquired data divided by the amount of hours that the system could have acquired data. PPI 1 or 3 refers to scans with one or three elevation angles. v1 and v2 refer to the dual setup with the a larger and shorter distance between range gates, respectively.