The Mars Environmental Dynamics Analyzer (MEDA) collects atmospheric measurements that will provide a regular weather report from Jezero Crater on Mars. Each of two horizontal booms mounted on the Mars 2020 rover's mast is encircled by six wind detectors, which will measure the horizontal and vertical winds. Because they extend away from the rover, they avoid wind interference caused by the rover itself and record the wind speed from any direction. Below the two wind sensor booms are three temperature sensors, which in combination with two more placed at the rover body, will measure the ambient temperature near the surface. Near the temperature sensors, other sensors will measure the relative humidity of the atmosphere, and the balance between the amount of infrared energy received from the sun and the amount reflected back to space.