Mars Science Laboratory relative humidity observations: Initial results

A. M. Harri, M. Genzer, O. Kemppinen, J. Gomez-Elvira, R. Haberle, J. Polkko, H. Savijärvi, N. Rennõ, J. A. Rodriguez-Manfredi, W. Schmidt, M. Richardson, T. Siili, M. Paton, M. Dela Torre-Juarez, T. Mäkinen, C. Newman, S. Rafkin, M. Mischna, S. Merikallio, H. HaukkaJavier Martin-Torres, M. Komu, M. P. Zorzano, V. Peinado, L. Vazquez, R. Urqui

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

The Mars Science Laboratory (MSL) made a successful landing at Gale crater early August 2012. MSL has an environmental instrument package called the Rover Environmental Monitoring Station (REMS) as a part of its scientific payload. REMS comprises instrumentation for the observation of atmospheric pressure, temperature of the air, ground temperature, wind speed and direction, relative humidity (REMS-H), and UV measurements. We concentrate on describing the REMS-H measurement performance and initial observations during the first 100 MSL sols as well as constraining the REMS-H results by comparing them with earlier observations and modeling results. The REMS-H device is based on polymeric capacitive humidity sensors developed by Vaisala Inc., and it makes use of transducer electronics section placed in the vicinity of the three humidity sensor heads. The humidity device is mounted on the REMS boom providing ventilation with the ambient atmosphere through a filter protecting the device from airborne dust. The final relative humidity results appear to be convincing and are aligned with earlier indirect observations of the total atmospheric precipitable water content. The water mixing ratio in the atmospheric surface layer appears to vary between 30 and 75 ppm. When assuming uniform mixing, the precipitable water content of the atmosphere is ranging from a few to six precipitable micrometers. Key PointsAtmospheric water mixing ratio at Gale crater varies from 30 to 140 ppmMSL relative humidity observation provides good dataHighest detected relative humidity reading during first MSL 100 sols is RH75%

Original languageEnglish
Pages (from-to)2132-2147
Number of pages16
JournalJournal of Geophysical Research E: Planets
Volume119
Issue number9
DOIs
Publication statusPublished - Jan 1 2014
Externally publishedYes

Fingerprint

environmental monitoring
humidity
Mars
relative humidity
Atmospheric humidity
stations
Monitoring
Humidity sensors
precipitable water
Polymethyl Methacrylate
mixing ratios
Sols
craters
mixing ratio
Water content
moisture content
crater
sensors (equipment)
electronic transducers
water content

Keywords

  • atmosphere
  • Gale
  • humidity
  • Mars
  • MSL
  • total water content

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Aquatic Science
  • Ecology
  • Condensed Matter Physics
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Materials Chemistry
  • Palaeontology

Cite this

Harri, A. M., Genzer, M., Kemppinen, O., Gomez-Elvira, J., Haberle, R., Polkko, J., ... Urqui, R. (2014). Mars Science Laboratory relative humidity observations: Initial results. Journal of Geophysical Research E: Planets, 119(9), 2132-2147. https://doi.org/10.1002/2013JE004514

Mars Science Laboratory relative humidity observations : Initial results. / Harri, A. M.; Genzer, M.; Kemppinen, O.; Gomez-Elvira, J.; Haberle, R.; Polkko, J.; Savijärvi, H.; Rennõ, N.; Rodriguez-Manfredi, J. A.; Schmidt, W.; Richardson, M.; Siili, T.; Paton, M.; Torre-Juarez, M. Dela; Mäkinen, T.; Newman, C.; Rafkin, S.; Mischna, M.; Merikallio, S.; Haukka, H.; Martin-Torres, Javier; Komu, M.; Zorzano, M. P.; Peinado, V.; Vazquez, L.; Urqui, R.

In: Journal of Geophysical Research E: Planets, Vol. 119, No. 9, 01.01.2014, p. 2132-2147.

Research output: Contribution to journalArticle

Harri, AM, Genzer, M, Kemppinen, O, Gomez-Elvira, J, Haberle, R, Polkko, J, Savijärvi, H, Rennõ, N, Rodriguez-Manfredi, JA, Schmidt, W, Richardson, M, Siili, T, Paton, M, Torre-Juarez, MD, Mäkinen, T, Newman, C, Rafkin, S, Mischna, M, Merikallio, S, Haukka, H, Martin-Torres, J, Komu, M, Zorzano, MP, Peinado, V, Vazquez, L & Urqui, R 2014, 'Mars Science Laboratory relative humidity observations: Initial results', Journal of Geophysical Research E: Planets, vol. 119, no. 9, pp. 2132-2147. https://doi.org/10.1002/2013JE004514
Harri AM, Genzer M, Kemppinen O, Gomez-Elvira J, Haberle R, Polkko J et al. Mars Science Laboratory relative humidity observations: Initial results. Journal of Geophysical Research E: Planets. 2014 Jan 1;119(9):2132-2147. https://doi.org/10.1002/2013JE004514
Harri, A. M. ; Genzer, M. ; Kemppinen, O. ; Gomez-Elvira, J. ; Haberle, R. ; Polkko, J. ; Savijärvi, H. ; Rennõ, N. ; Rodriguez-Manfredi, J. A. ; Schmidt, W. ; Richardson, M. ; Siili, T. ; Paton, M. ; Torre-Juarez, M. Dela ; Mäkinen, T. ; Newman, C. ; Rafkin, S. ; Mischna, M. ; Merikallio, S. ; Haukka, H. ; Martin-Torres, Javier ; Komu, M. ; Zorzano, M. P. ; Peinado, V. ; Vazquez, L. ; Urqui, R. / Mars Science Laboratory relative humidity observations : Initial results. In: Journal of Geophysical Research E: Planets. 2014 ; Vol. 119, No. 9. pp. 2132-2147.
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abstract = "The Mars Science Laboratory (MSL) made a successful landing at Gale crater early August 2012. MSL has an environmental instrument package called the Rover Environmental Monitoring Station (REMS) as a part of its scientific payload. REMS comprises instrumentation for the observation of atmospheric pressure, temperature of the air, ground temperature, wind speed and direction, relative humidity (REMS-H), and UV measurements. We concentrate on describing the REMS-H measurement performance and initial observations during the first 100 MSL sols as well as constraining the REMS-H results by comparing them with earlier observations and modeling results. The REMS-H device is based on polymeric capacitive humidity sensors developed by Vaisala Inc., and it makes use of transducer electronics section placed in the vicinity of the three humidity sensor heads. The humidity device is mounted on the REMS boom providing ventilation with the ambient atmosphere through a filter protecting the device from airborne dust. The final relative humidity results appear to be convincing and are aligned with earlier indirect observations of the total atmospheric precipitable water content. The water mixing ratio in the atmospheric surface layer appears to vary between 30 and 75 ppm. When assuming uniform mixing, the precipitable water content of the atmosphere is ranging from a few to six precipitable micrometers. Key PointsAtmospheric water mixing ratio at Gale crater varies from 30 to 140 ppmMSL relative humidity observation provides good dataHighest detected relative humidity reading during first MSL 100 sols is RH75{\%}",
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AU - Harri, A. M.

AU - Genzer, M.

AU - Kemppinen, O.

AU - Gomez-Elvira, J.

AU - Haberle, R.

AU - Polkko, J.

AU - Savijärvi, H.

AU - Rennõ, N.

AU - Rodriguez-Manfredi, J. A.

AU - Schmidt, W.

AU - Richardson, M.

AU - Siili, T.

AU - Paton, M.

AU - Torre-Juarez, M. Dela

AU - Mäkinen, T.

AU - Newman, C.

AU - Rafkin, S.

AU - Mischna, M.

AU - Merikallio, S.

AU - Haukka, H.

AU - Martin-Torres, Javier

AU - Komu, M.

AU - Zorzano, M. P.

AU - Peinado, V.

AU - Vazquez, L.

AU - Urqui, R.

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N2 - The Mars Science Laboratory (MSL) made a successful landing at Gale crater early August 2012. MSL has an environmental instrument package called the Rover Environmental Monitoring Station (REMS) as a part of its scientific payload. REMS comprises instrumentation for the observation of atmospheric pressure, temperature of the air, ground temperature, wind speed and direction, relative humidity (REMS-H), and UV measurements. We concentrate on describing the REMS-H measurement performance and initial observations during the first 100 MSL sols as well as constraining the REMS-H results by comparing them with earlier observations and modeling results. The REMS-H device is based on polymeric capacitive humidity sensors developed by Vaisala Inc., and it makes use of transducer electronics section placed in the vicinity of the three humidity sensor heads. The humidity device is mounted on the REMS boom providing ventilation with the ambient atmosphere through a filter protecting the device from airborne dust. The final relative humidity results appear to be convincing and are aligned with earlier indirect observations of the total atmospheric precipitable water content. The water mixing ratio in the atmospheric surface layer appears to vary between 30 and 75 ppm. When assuming uniform mixing, the precipitable water content of the atmosphere is ranging from a few to six precipitable micrometers. Key PointsAtmospheric water mixing ratio at Gale crater varies from 30 to 140 ppmMSL relative humidity observation provides good dataHighest detected relative humidity reading during first MSL 100 sols is RH75%

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KW - atmosphere

KW - Gale

KW - humidity

KW - Mars

KW - MSL

KW - total water content

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