While other inputs, such as θ and N, were kept unchanged, in general, using Rad-P produced lower peaks than using the Sat-P (≈observed) in both of the watersheds (Table 4). Although the total Sat-P and Rad-P rainfalls were not much different, the estimated time to peak of the Rad-P was 0.73 hours later than that using Sat-P in Nam Kim and 0.26 hours later than that in Nam Khat.
Comparing the simulated discharge using the Sat-P and Rad-P for the R23rd event
| Parameters/Watersheds . | Peak discharge (m3 s−1) . | Lags (hour) . | . | Accumulative rainfall (mm) . | ||||
|---|---|---|---|---|---|---|---|---|
| Sat-P . | Rad-P . | Observed . | Sat-P . | Rad-P . | Soil moisture (%) . | Sat-P . | Rad-P . | |
| NAM KIM | 314.3 | 189.2 | 306.2 | 4.4 | 5.13 | 46 | 144.4 | 133.3 |
| NAM KHAT | 191.5 | 108.7 | – | 1.67 | 2.02 | 42 | 135.5 | 113.1 |
| Parameters/Watersheds . | Peak discharge (m3 s−1) . | Lags (hour) . | . | Accumulative rainfall (mm) . | ||||
|---|---|---|---|---|---|---|---|---|
| Sat-P . | Rad-P . | Observed . | Sat-P . | Rad-P . | Soil moisture (%) . | Sat-P . | Rad-P . | |
| NAM KIM | 314.3 | 189.2 | 306.2 | 4.4 | 5.13 | 46 | 144.4 | 133.3 |
| NAM KHAT | 191.5 | 108.7 | – | 1.67 | 2.02 | 42 | 135.5 | 113.1 |