Geoscience Reference
In-Depth Information
Fig. 16. Lowest unblocked radar coverage (top row) and beam blockage (middle) computed
with radiosonde data (left column) and NWP-derived profiles (right column). The bottom
panel shows actual radar observations, 6 July 2005 00 UTC (Røst radar, met.no). Adapted
from Bech et al. (2007a).
6. Detection and correction of AP echoes with satellite data
Several studies have been reported regarding the use of satellite images to detect AP echoes,
based on the simple approach of removing echoes in cloudless conditions. However, in
practice this procedure is not as straight forward as might seem and requires substantial fine
tuning to obtain a reasonable balance between false alarms and detection, particularly in
