REMS: The Environmental Sensor Suite for the Mars Science Laboratory Rover
The Rover Environmental Monitoring Station (REMS) will investigate environmental factors directly tied to current habitability at the Martian surface during the Mars Science Laboratory (MSL) mission. Three major habitability factors are addressed by REMS: the thermal environment, ultraviolet irradiation, and water cycling. The thermal environment is determined by a mixture of processes, chief amongst these being the meteorological. Accordingly, the REMS sensors have been designed to record air and ground temperatures, pressure, relative humidity, wind speed in the horizontal and vertical directions, as well as ultraviolet radiation in different bands. These sensors are distributed over the rover in four places: two booms located on the MSL Remote Sensing Mast, the ultraviolet sensor on the rover deck, and the pressure sensor inside the rover body. Typical daily REMS observations will collect 180 minutes of data from all sensors simultaneously (arranged in 5 minute hourly samples plus 60 additional minutes taken at times to be decided during the course of the mission). REMS will add significantly to the environmental record collected by prior missions through the range of simultaneous observations including water vapor; the ability to take measurements routinely through the night; the intended minimum of one Martian year of observations; and the first measurement of surface UV irradiation. In this paper, we describe the scientific potential of REMS measurements and describe in detail the sensors that constitute REMS and the calibration procedures.
KeywordsMars Mars Science Laboratory Atmosphere Meteorology Pressure Relative Humidity Wind Ultraviolet radiation Temperature
The authors thank José Barrera and all the great professionals from EADS-CRISA, which have participated in the project. We also wish to thank Jon Merrison from Aarhus University, for his collaboration on the wind tunnel tests with the wind sensor breadboards, as well as the team from Oxford University who also participated in the initial testing. Finally our thanks to the two reviewers of this paper and Ashwin Vasavada for their comments, which greatly helped to improve it.
The authors thanks to the Centro de Desarrollo Tecnológico e Industrial (CDTI), Ministerio de Economía y Competitividad (ESP2006-27267, ESP2007-65862, AYA2011-25720) and Instituto Nacional de Técnica Aeroespacial (INTA) of Spain for funding the project.
- G. Amaral, J. Martínez-Frías, L. Vázquez, World Appl. Sci. J. 2, 112–116 (2007) Google Scholar
- L.P. Daniel, NASA technical memorandum 102578 (1990) Google Scholar
- A.-M. Harri, V. Linkin, J. Polkko, M. Marov, J.-P. Pommereau, A. Lipatov, T. Siili, K. Manuilov, V. Lebedev, A. Lehto, R. Pellinen, R. Pirjola, T. Carpentier, C. Malique, V. Makarov, L. Khloustova, L. Esposito, J. Maki, G. Lawrence, V. Lystev, Planet. Space Sci. 46, 779–793 (1998b) ADSCrossRefGoogle Scholar
- R.C. Quin, A.P. Zent, C.P. McKay, in Lunar Planet. Sci. Conf. XXXII, Houston, Texas, Boston (2001) Google Scholar
- M.-P. Zorzano, J. Martín-Soler, J. Gómez-Elvira, in UV Photodiodes Response to Non-normal, Non-colimated and Diffusive Sources of Irradiance, ed. by J.-W. Shi, Photodiodes—Communications, Bio-Sensings, Measurements and High-Energy Physics (InTech Publishers, Shanghai, 2011). ISBN:978-953-307-277-7 Google Scholar