Research, Policy and Practice
Table 1 Satellite data, products and other ancillary data used in this study
No. | Data | Satellite sensor/source | Frequency | Resolution/scale | Reference |
|---|---|---|---|---|---|
1 | Satellite rainfall estimate | TRMM 3B42 | Daily | 0.25° × 0.25° | Huffman 1997 |
2 | Global GDAS reference ET | Model-assimilated satellite data | Daily | 0.1° × 0.1° | Senay et al. 2008 |
3 | ASTER | VNIR and SWIR | Multiple dates | 15 m | - |
4 | Digital elevation model | SRTM V 4.0 | Single date | 90 m | Farr et al. 2000 |
5 | Run-off coefficient data for Africa | SCS curve number method | Single date | 10 km | Senay and Verdin 2004 |
6 | Waterhole water level data | Field data collection | 2008 to 2010 | - | This study |