First Results Of The Relative Humidity Sensor On Board
M2020 Perseverance Rover
M. Hieta, J. Polkko, I. Jaakonaho, M. Genzer, A.-M. Harri, Finnish Meteorological Institute, Helsinki, Finland (Maria.Hieta@Fmi.Fi), G. M. Martínez, Lunar And Planetary Institute/Usra, Houston, Tx, Usa, L.
Tamppari, M. De La Torre Juárez, Jet Propulsion Laboratory/California Institute Of Technology, Pasadena,
Ca, Usa, J. A. Rodriguez-Manfredi, Centro De Astrobiologia (Inta-Csic), Madrid, Spain

Introduction:
Meda Hs Is A Relative Humidity Sensor For Mars
2020 Perseverance Rover [1] Provided By The Finnish
Meteorological Institute (Fmi). Meda Hs Is A Part
Of Mars Environmental Dynamic Analyzer (Meda),
A Set Of Environmental Sensors Provided To Nasa By
The Centro De Astrobiología (Cab) At The Instituto
Nacional De Técnica Aeroespacial In Madrid, Spain
[2].
Meda’S Principal Goals Are To Provide Continuous Measurements That Characterize The Diurnal To
Seasonal Cycles Of Near-Surface Environment And Local Environmental Dust Properties. The Main Scientific Goal Of The Humidity Sensor Is To Measure Relative Humidity Of The Martian Atmosphere Near The
Surface And To Complement The Previous Mars Mission Atmospheric Measurements For Better Understanding Of The Martian Atmospheric Conditions And
The Hydrological Cycle. Relative Humidity Has Been
Measured From The Surface Of Mars Previously Only