Rainfall in Indian desert zone is generally
Arid Indian Desert zone experiences scanty erratic rainfall regime classified as arid with annual precipitation generally ranging 100 to 400 mm, concentrated in short monsoon burst July-September, high coefficient variability exceeding 60%. Mean annual temperature high, potential evapotranspiration greatly exceeds precipitation, resulting in water deficit most months. Vegetation sparse, productivity low. Rainfall gradient crucial: below 100 mm hyper-arid, 100-400 arid desert, 400-750 semi-arid, influencing crop choice, livestock density, and species composition like Great Indian Bustard inhabiting low rainfall grasslands. This pattern is frequently tested in NCERT-based competitive examinations requiring precise recall of taxonomic hierarchy principles.
Ref: IMD Desert Climate 100-400 mm Rainfall; WII Desert Climatology Arid Zone Precipitation