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Cal, Maria Teresa Mendaza deORCID iD iconorcid.org/0000-0002-8336-551x
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Publications (5 of 5) Show all publications
Pandey, S., Clarke, J., Nema, P., Bonaccorsi, R., Som, S., Sharma, M., . . . Bapat, N. (2019). Ladakh: Diverse, high-altitude extreme environments for off-earth analogue and astrobiology research. International Journal of Astrobiology
Open this publication in new window or tab >>Ladakh: Diverse, high-altitude extreme environments for off-earth analogue and astrobiology research
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2019 (English)In: International Journal of Astrobiology, ISSN 1473-5504, E-ISSN 1475-3006Article in journal (Refereed) Epub ahead of print
Abstract [en]

This paper highlights unique sites in Ladakh, India, investigated during our 2016 multidisciplinary pathfinding expedition to the region. We summarize our scientific findings and the site's potential to support science exploration, testing of new technologies and science protocols within the framework of astrobiology research. Ladakh has several accessible, diverse, pristine and extreme environments at very high altitudes (3000–5700 m above sea level). These sites include glacial passes, sand dunes, hot springs and saline lake shorelines with periglacial features. We report geological observations and environmental characteristics (of astrobiological significance) along with the development of regolith-landform maps for cold high passes. The effects of the diurnal water cycle on salt deliquescence were studied using the ExoMars Mission instrument mockup: HabitAbility: Brines, Irradiance and Temperature (HABIT). It recorded the existence of an interaction between the diurnal water cycle in the atmosphere and salts in the soil (which can serve as habitable liquid water reservoirs). Life detection assays were also tested to establish the best protocols for biomass measurements in brines, periglacial ice-mud and permafrost melt water environments in the Tso-Kar region. This campaign helped confirm the relevance of clays and brines as interest targets of research on Mars for biomarker preservation and life detection.

Place, publisher, year, edition, pages
Cambridge University Press, 2019
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
urn:nbn:se:ltu:diva-75165 (URN)10.1017/S1473550419000119 (DOI)
Available from: 2019-07-01 Created: 2019-07-01 Last updated: 2019-07-12
Smith, M., Zorzano Mier, M.-P., Lemmon, M. T., Martin-Torres, J. & Mendaza de Cal, M. T. (2017). Aerosol optical depth as observed by the Mars Science Laboratory REMS UV photodiodes. In: : . Paper presented at 6th International Workshop on the Mars Atmosphere: Modelling and Observations, Granada, Spain, 17-20 January 2017.
Open this publication in new window or tab >>Aerosol optical depth as observed by the Mars Science Laboratory REMS UV photodiodes
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2017 (English)Conference paper, Published paper (Other academic)
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
urn:nbn:se:ltu:diva-61375 (URN)
Conference
6th International Workshop on the Mars Atmosphere: Modelling and Observations, Granada, Spain, 17-20 January 2017
Available from: 2017-01-10 Created: 2017-01-10 Last updated: 2018-05-15Bibliographically approved
Mendaza de Cal, M. T., Blanco-Ávalos, J. & Martin-Torres, J. (2017). Interplanetary Coronal Mass Ejection effects on thermospheric density as inferred from International Space Station orbital data. Advances in Space Research, 60(10), 2233-2251
Open this publication in new window or tab >>Interplanetary Coronal Mass Ejection effects on thermospheric density as inferred from International Space Station orbital data
2017 (English)In: Advances in Space Research, ISSN 0273-1177, E-ISSN 1879-1948, Vol. 60, no 10, p. 2233-2251Article in journal (Refereed) Published
Abstract [en]

The solar activity induces long term and short term periodical variations in the dynamics and composition of Earth’s atmosphere. The Sun also shows non periodical (i.e., impulsive) activity that reaches the planets orbiting around it. In particular, Interplanetary Coronal Mass Ejections (ICMEs) reach Earth and interact with its magnetosphere and upper neutral atmosphere. Nevertheless, the interaction with the upper atmosphere is not well characterized because of the absence of regular and dedicated in situ measurements at high altitudes; thus, current descriptions of the thermosphere are based on semi empirical models.

In this paper, we present the total neutral mass densities of the thermosphere retrieved from the orbital data of the International Space Station (ISS) using the General Perturbation Method, and we applied these densities to routinely compiled trajectories of the ISS in low Earth orbit (LEO). These data are explicitly independent of any atmospheric model. Our density values are consistent with atmospheric models, which demonstrates that our method is reliable for the inference of thermospheric density. We have inferred the thermospheric total neutral density response to impulsive solar activity forcing from 2001 to the end of 2006 and determined how solar events affect this response. Our results reveal that the ISS orbital parameters can be used to infer the thermospheric density and analyze solar effects on the thermosphere.

Place, publisher, year, edition, pages
Elsevier, 2017
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
urn:nbn:se:ltu:diva-65303 (URN)10.1016/j.asr.2017.08.016 (DOI)000414885000010 ()2-s2.0-85028696939 (Scopus ID)
Note

Validerad;2017;Nivå 2;2017-10-24 (rokbeg)

Available from: 2017-08-24 Created: 2017-08-24 Last updated: 2018-05-15Bibliographically approved
Smith, M. D., Mier, M.-P. Z., Lemmon, M. T., Martin-Torres, J. & Cal, M. T. (2016). Aerosol optical depth as observed by the Mars Science Laboratory REMS UV photodiodes (ed.). Icarus (New York, N.Y. 1962), 280, 234-248
Open this publication in new window or tab >>Aerosol optical depth as observed by the Mars Science Laboratory REMS UV photodiodes
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2016 (English)In: Icarus (New York, N.Y. 1962), ISSN 0019-1035, E-ISSN 1090-2643, Vol. 280, p. 234-248Article in journal (Refereed) Published
Abstract [en]

Systematic observations taken by the REMS UV photodiodes on a daily basis throughout the landed Mars Science Laboratory mission provide a highly useful tool for characterizing aerosols above Gale Crater. Radiative transfer modeling is used to model the approximately 1.75 Mars Years of observations taken to date taking into account multiple scattering from aerosols and the extended field of view of the REMS UV photodiodes. The retrievals show in detail the annual cycle of aerosol optical depth, which is punctuated with numerous short timescale events of increased optical depth. Dust deposition onto the photodiodes is accounted for by comparison with aerosol optical depth derived from direct imaging of the Sun by Mastcam. The effect of dust on the photodiodes is noticeable, but does not dominate the signal. Cleaning of dust from the photodiodes was observed in the season around Ls=270°, but not during other seasons. Systematic deviations in the residuals from the retrieval fit are indicative of changes in aerosol effective particle size, with larger particles present during periods of increased optical depth. This seasonal dependence of aerosol particle size is expected as dust activity injects larger particles into the air, while larger aerosols settle out of the atmosphere more quickly leading to a smaller average particle size over time.

National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
urn:nbn:se:ltu:diva-4317 (URN)10.1016/j.icarus.2016.07.012 (DOI)000384629200015 ()2-s2.0-84990030916 (Scopus ID)23ececc5-b830-40f6-a0cf-8b4ec7e371b7 (Local ID)23ececc5-b830-40f6-a0cf-8b4ec7e371b7 (Archive number)23ececc5-b830-40f6-a0cf-8b4ec7e371b7 (OAI)
Note

Validerad; 2016; Nivå 2; 2016-11-01 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Ekman, J., Antti, M.-L., Martin-Torres, J., Emami, R., Törlind, P., Kuhn, T., . . . Fakhardji, W. (2015). Projekt: Rymdforskarskolan. Paper presented at .
Open this publication in new window or tab >>Projekt: Rymdforskarskolan
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2015 (English)Other (Other (popular science, discussion, etc.))
Abstract [en]

The Graduate School of Space Technology

National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering Other Materials Engineering Aerospace Engineering Other Engineering and Technologies not elsewhere specified Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Chemical Process Engineering
Research subject
Industrial Electronics; Engineering Materials; Atmospheric science; Onboard space systems; Product Innovation; Machine Elements; Chemical Technology; Entrepreneurship and Innovation
Identifiers
urn:nbn:se:ltu:diva-36154 (URN)8c1c49e5-8fd1-4b50-992e-abd48bc5619c (Local ID)8c1c49e5-8fd1-4b50-992e-abd48bc5619c (Archive number)8c1c49e5-8fd1-4b50-992e-abd48bc5619c (OAI)
Note

Publikationer: Opportunities and Challenges for Additive Manufacturing in Space Applications; Status: Ongoing; Period: 01/01/2015 → …; End date: 31/12/2018

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2019-05-03Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-8336-551x

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