Palmer Drought Index

The Palmer Drought Index (PDI) is a scientific tool used to measure drought severity and moisture conditions in the environment. It assesses temperature and rainfall data to determine how much moisture is available in the soil. The index produces a numerical value: positive numbers indicate wet conditions, while negative values signal varying degrees of drought. By tracking these changes over time, the PDI helps researchers and policymakers understand drought patterns and make informed decisions about water management, agriculture, and conservation efforts in affected areas.