Why is the NISAR (NASA–ISRO Synthetic Aperture Radar) mission designed to revisit the same location every 12 days?

Correct option is D

The correct answer is (d) To achieve temporal resolution for global coverage and land deformation monitoring.
• Frequent revisits allow monitoring of dynamic Earth processes.
• Helps detect land deformation, earthquakes, glaciers, and floods.
• Ensures consistent and comparable data over time.
Information Booster:
• NISAR is a joint mission of NASA and ISRO.
• It uses L-band and S-band radar.
• Designed for all-weather, day-night observation.
• Launch planned from India.
Additional Knowledge:
• Temporal resolution is critical for disaster management.
• Synthetic Aperture Radar penetrates clouds and vegetation.
• Mission supports climate change and sustainability studies.