Climate-zone definition
Arid climate describes persistent moisture deficit where evaporation commonly exceeds precipitation and water arrives rarely or unpredictably. It is a broad park-scale category rather than a precise site forecast or a substitute for local climate records.
Here, arid climate identifies the broad climatic setting most helpful for understanding a park's ecology and seasonality. It is separate from habitat: one climate zone may support forests, wetlands, grasslands, or bare terrain depending on moisture, substrate, elevation, and disturbance.
The category should therefore support comparison and interpretation while preserving uncertainty wherever park-scale evidence is incomplete or transitional.
