Table 3.
Predictor data used for the LSTM model.
| Variable | Source | Description | |
|---|---|---|---|
| Dynamic | Air temperature | ERA536 | Daily meteorological forcing obtained from ECMWF reanalysis |
| Precipitation | |||
| Specific humidity | |||
| Net surface radiation | |||
| Downward surface solar radiation | |||
| Land surface temperature | |||
| Soil moisture from upper layer(s) for second and third layers | SoMo.ml50 | ML-based soil moisture produced in this study | |
| Static | Mean precipitation | ERA536 | Long-term mean precipitation |
| Aridity | ERA536 | Ratio of net radiation to precipitation | |
| Topography | ETOPO141 | Mean and standard deviation of sub-grid scale elevation values at each grid cell | |
| Vegetation type | GLDAS42 | Predominant vegetation type (MODIS-derived) at each grid cell | |
| Soil type | GLDAS42 | Clay, sand and silt fractions based on FAO Soil Map of the World43 | |
| Soil porosity | GLDAS42 | Soil porosity across layers, based on FAO Soil Map of the World44 |