Geoscience Reference
In-Depth Information
Bi
saquino Radar vs Giuliana Gauge: 37 hourly amounts with G >= 0.4 mm/h
20
18
16
14
12
10
8
6
4
2
0
0
2
4
6
8
10
12
14
16
18
20
Rain gauge hourly amounts, G; [G] = mm/h
Fig. 13. Scatter plot of 37 hours with Giuliana gauge amounts larger or equal than 0.4 mm/h
and the corresponding Bisacquino radar estimates. It is worth noting that in this case the
maximum value of the linear scale for the scatter plot is 20 mm/h.
Using only the 29 hours where BOTH the Radar AND the Gauge amounts were larger or
equal to 0.4 mm/h, the total Gauge (Radar) amount was 90.6 (73.5) mm. Consequently, the
“wet-wet” Mean Field Bias is 0.9 dB. Also the “wet-wet” Scatter improves slightly: based
on such 29 “wet-wet” hours, it results to be 1.31 dB, as it can be seen from Fig. 14. The 0.16
dB decrease in the value of the Scatter is a clue of the almost marginal rain amount missed
by the radar during the 8 “Missing Detection hours” (6.8/97.4).
