The Rover Environmental Monitoring Station
In addition to being a great geologist, The Rover Environmental Monitoring Station (REMS) will make Mars Rover Curiosity into a great cosmic meteorologist. In daily and seasonal reports, REMS will send scientists information on atmospheric pressure, humidity, UV radiation, wind speed and direction, air temperature, and ground temperature.
Two booms will monitor wind speed, helping us to understand how breezes and one of the biggest weather phenomena on Mars, dust, operate. An inner sensor exposed to the atmosphere will catalogue changes in pressure caused by changes in the weather, and a filter keeps all the unwanted dust out.