Table 1.
Summary Table of Technical Validation Results.
| Regression | R Square | Standard Error | Bias |
|---|---|---|---|
| Elvevation | |||
| Elev_WC_2.1 ve Elev_Climwat | 0.98 | 108 | −3.73 |
| Elev_WC_1.4 vs Elev_Climwat | 0.98 | 108 | −2.53 |
| Elev_WC_1.4 vs ELev_WC_2.1 | 1.00 | 13 | −1.22 |
| Mean Annual Temperature | |||
| Tmean_WC_1.4 vs Tmean_CLIMWAT | 0.99 | 0.93 | 0.03 |
| Tmean_WC_2.0 vs Tmean_CLIMWAT | 0.98 | 1.02 | −0.06 |
| Tmean_WC_2.1 vs Tmean_CLIMWAT | 0.98 | 1.01 | −0.06 |
| Tmean_WC_1.4 vs Tmean_WC_2.1 | 1.00 | 0.56 | −0.10 |
| Mean Annual Precipitation | |||
| Prec_CLIMWAT vs Prec_WC_1.4 | 0.98 | 110 | 5.23 |
| Prec_CLIMWAT vs Prec_WC_2.0 | 0.96 | 150 | −0.95 |
| Prec_CLIMWAT vs Prec_WC_2.1 | 0.96 | 148 | −1.61 |
| Prec_WC_1.4 vs Prec_WC_2.1 | 0.97 | 122 | −6.84 |
| Potential Evapotranspiration_ET0 | |||
| ET0_CLIMWAT_XLS vs ET0_CLIMWAT | 0.99 | 36 | −53.71 |
| Global_PET_v1 vs ETo_CLIMWAT | 0.72 | 221 | −132.65 |
| Global_ET0_v2 vs ET0_CLIMWAT | 0.84 | 221 | −385.75 |
| Global_ET0_v3 vs ET0_CLIMWAT | 0.85 | 219 | −389.38 |
| Global_ET0_v1 vs Global_ET0_v3 | 0.65 | 249 | −256.73 |
| ET0_CLIMWAT vs ET0_CRU_TS | 0.84 | 160 | −18.74 |
| Global_ET0_v3 vs ET0_CRU_TS | 0.89 | 136 | −408.12 |
| Aridity Index | |||
| Global_AI_v1 vs AI_CLIMWAT | 0.91 | 0.16 | 0.14 |
| Global_AI_v2 vs AI_CLIMWAT | 0.888 | 0.18 | 0.21 |
| Global_AI_v3 vs AI_CLIMWAT | 0.90 | 0.17 | 0.21 |
| Global_AI_v1 vs Global_AI_v3 | 0.89 | 0.18 | 0.07 |
| AI_CLIMWAT vs AI_CRU_TS | 0.77 | 0.33 | −0.02 |
| Global_AI_v3 vs AI_CRU_TS | 0.83 | 0.22 | 0.23 |
| ** Evaluated datasets | Description | ||
| Elevation | |||
| Elev_Climwat | Elevation data from CLIMWAT station data | ||
| Elev_WC_1.4 | Elevation data supplied with WC_1.4 | ||
| Elev_WC_2.1 | Elevation data suppled with WC_2.0 and WC_2.1 | ||
| Mean Annual Temperature | |||
| Tmean_ClimWat | Temperature data from CLIMWAT station data | ||
| Tmean_WC_1.4 | Temperature data from WC_1.4 | ||
| Tmean_WC_2.0 | Temperature data from WC_2.0 | ||
| Tmean_WC_2.1 | Temperature data from WC_2.1 | ||
| Mean Annual Precipitation | |||
| Prec_ClimWat | Precipitation data from CLIMWAT station data | ||
| Prec_WC_1.4 | Precipitation data from WC_1.4 | ||
| Prec_WC_2.0 | Precipitation data from WC_2.0 | ||
| Prec_WC_2.1 | Precipitation data from WC_2.1 | ||
| PET (ET0) | |||
| ET0_ClimWat | ET0 as reported by CLIMWAT station data | ||
| ET0_ClimWat_XLS | ET0 calculated using estimation algorithm parameterized with CLIMWAT station data | ||
| ET0_CRU_TS | ET0 extracted from CRU_TS PET grid | ||
| Global_PET_v1 | PET calculated using WC_1.4 (Modified Hargreaves-Thornton) | ||
| Global_ET0_v2 | ET0 calculated using WC_2.0 (Penman-Montieth) | ||
| Global_ET0_v3 | ET0 calculated using WC_2.1 (Penman-Montieth) | ||
| Aridity Index (AI) | |||
| AI_ClimWat | AI calculated using parameters from CLIMWAT station data (Penman-Montieth) | ||
| AI_CRU_TS | AI calculated using CRU_TS (Penman-Montieth) | ||
| Global_AI_v1 | AI calculated using WC_1.4 (Modified Hargreaves-Thornton) | ||
| Global_AI_v2 | AI calculated using WC_2.0 (Penman-Montieth) | ||
| Global_AI_v3 | AI calculated using WC_2.1 (Penman-Montieth) | ||