| Title: | Development and evaluation of Soil Moisture Deficit Index (SMDI) and Evapotranspiration Deficit Index (ETDI) for agricultural drought monitoring |
| Authors: | Narasimhan, B. and R. Srinivasan |
| Year: | 2005 |
| Journal: | Agricultural and Forest Meteorology |
| Volume (Issue): | 133(1-4) |
| Pages: | 69-88 |
| Article ID: | |
| DOI: | 10.1016/j.agrformet.2005.07.012 |
| URL (non-DOI journals): | |
| Model: | SWAT |
| Broad Application Category: | hydrologic only |
| Primary Application Category: | groundwater and/or soil water impacts |
| Secondary Application Category: | evapotranspiration assessment |
| Watershed Description: | 29,664 km^2 Upper Trinity, 15,200 km^2 Lower Trinity, 11,632 km^2 Red, 14,736 km^2 Guadalope; 10,320 km^2 San Antonio and 26,656 km^2 Colorado Rivers, located respectively in northeast, southeast, northwest, south central, south central and west central Texas, U.S. |
| Calibration Summary: | |
| Validation Summary: | |
| General Comments: | Historical soil moisture and evaporaton simulated by Narasimhan et al. (2005) was used in this study to develop the agricultural drought indices. Soil moisture and ET were simulated for a 16 km^2 resolution. A soil moisture deficit index (SMDI) and evapotranspiration deficit index (ETDI) were developed from the simulated data. The predicted SWAT soil moisture was postively correlated with NWDI for agriculture and pastureland cover types (r ≈ 0.6). |
| Language: | English |
| Keywords: | Drought index; PDSI; SPI; Soil moisture; Evapotranspiration; Crop yield |