Geoscience Reference
In-Depth Information
Fig. 4. Recorded maximum surface wind speed during the passage of Klaus over France.
The trajectory and central pressure of the cyclone are also indicated.
4.1.2 Radar-derived wind and reflectivity fields
Observations collected between 03 and 9 UTC on 24 January 2009 are shown in Fig. 5 All
radars performed nominally during this period with the exception of the Momuy radar,
which was forced to cease operations near 05UTC due to heavy wind damages. Velocity
data recorded just before the radar failure were in excess of 60 m.s
-1
(216 km.h
-1
) at 2000m
MSL and ~ 45 m.s
-1
(160 km.h
-1
) close to the ground. Also note that the French radar
network was not yet completely Doppler-ized at this time resulting in some gaps in the
dual-Doppler radar coverage over northwestern and southern France.
