Methods - QuickDRI
Figure 2. Diagram of QuickDRI MethodologyClick to enlarge
QuickDRI is designed to fill a critical need in operational drought monitoring for a tool that is sensitive to rapidly evolving drought conditions. QuickDRI incorporates multiple remote sensing- and model-based input variables that portray key components of the hydrologic cycle influencing drought-related vegetation stress (evapotranspiration [ET], soil moisture, and vegetation index-based plant health). These variables are integrated with traditional precipitation- and temperature-based climate indices and other general environmental descriptors (land use/land cover, soil water holding capacity, elevation, and ecoregion) to map and monitor early-stage drought and rapid-onset events sometimes called “flash” droughts.
The QuickDRI indicator that is currently under development is based on a similar methodology to VegDRI. Details on the specific input data sets will be filled in soon. In the meantime, the VegDRI methodology provides general background useful for understanding the QuickDRI methods.