On the use of heated needle probes for measuring snow thermal conductivity
International audience Heated needle probes provide the most convenient method to measure snow thermal conductivity. Recent studies have suggested that this method underestimates snow thermal conductivity; however the reasons for this discrepancy have not been elucidated. We show that it originates...
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Online Access: | https://hal.science/hal-03870771 https://hal.science/hal-03870771/document https://hal.science/hal-03870771/file/138-FourteauJG2022.pdf https://doi.org/10.1017/jog.2021.127 |
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ftccsdartic:oai:HAL:hal-03870771v1 2023-12-24T10:18:08+01:00 On the use of heated needle probes for measuring snow thermal conductivity Fourteau, Kévin Hagenmuller, Pascal Roulle, Jacques Domine, Florent Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) 2022 https://hal.science/hal-03870771 https://hal.science/hal-03870771/document https://hal.science/hal-03870771/file/138-FourteauJG2022.pdf https://doi.org/10.1017/jog.2021.127 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2021.127 hal-03870771 https://hal.science/hal-03870771 https://hal.science/hal-03870771/document https://hal.science/hal-03870771/file/138-FourteauJG2022.pdf doi:10.1017/jog.2021.127 info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-03870771 Journal of Glaciology, 2022, 68 (270), pp.705 - 719. ⟨10.1017/jog.2021.127⟩ Snow snow physics glaciological instruments and methods [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1017/jog.2021.127 2023-11-25T23:57:16Z International audience Heated needle probes provide the most convenient method to measure snow thermal conductivity. Recent studies have suggested that this method underestimates snow thermal conductivity; however the reasons for this discrepancy have not been elucidated. We show that it originates from the fact that, while the theory behind the method assumes that the measurements reach a logarithmic regime, this regime is not reached within the standard measurement procedure. Using the needle probe without this logarithmic regime leads to thermal conductivity underestimations of tens of percents. Moreover, we show that the poor thermal contact between the probe and the snow due to insertion damages results in a further underestimation. Thus, we encourage the use of fixed needle probes, set up before the snow season and buried under snowfalls, rather than hand-inserted probes. Finally, we propose a method to correct the measurements performed with such fixed needle probes buried in snow. This correction is based on a lookup table, derived specifically for the Hukseflux TP02 needle probe model, frequently used in snow studies. Comparison between corrected measurements and independent estimations of snow thermal conductivity obtained with numerical simulations shows an overall improvement of the needle probe values after application of the correction. Article in Journal/Newspaper Journal of Glaciology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) The Needle ENVELOPE(-64.047,-64.047,63.267,63.267) Journal of Glaciology 68 270 705 719 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Snow snow physics glaciological instruments and methods [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] |
spellingShingle |
Snow snow physics glaciological instruments and methods [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] Fourteau, Kévin Hagenmuller, Pascal Roulle, Jacques Domine, Florent On the use of heated needle probes for measuring snow thermal conductivity |
topic_facet |
Snow snow physics glaciological instruments and methods [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDE.IE]Environmental Sciences/Environmental Engineering [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] |
description |
International audience Heated needle probes provide the most convenient method to measure snow thermal conductivity. Recent studies have suggested that this method underestimates snow thermal conductivity; however the reasons for this discrepancy have not been elucidated. We show that it originates from the fact that, while the theory behind the method assumes that the measurements reach a logarithmic regime, this regime is not reached within the standard measurement procedure. Using the needle probe without this logarithmic regime leads to thermal conductivity underestimations of tens of percents. Moreover, we show that the poor thermal contact between the probe and the snow due to insertion damages results in a further underestimation. Thus, we encourage the use of fixed needle probes, set up before the snow season and buried under snowfalls, rather than hand-inserted probes. Finally, we propose a method to correct the measurements performed with such fixed needle probes buried in snow. This correction is based on a lookup table, derived specifically for the Hukseflux TP02 needle probe model, frequently used in snow studies. Comparison between corrected measurements and independent estimations of snow thermal conductivity obtained with numerical simulations shows an overall improvement of the needle probe values after application of the correction. |
author2 |
Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) |
format |
Article in Journal/Newspaper |
author |
Fourteau, Kévin Hagenmuller, Pascal Roulle, Jacques Domine, Florent |
author_facet |
Fourteau, Kévin Hagenmuller, Pascal Roulle, Jacques Domine, Florent |
author_sort |
Fourteau, Kévin |
title |
On the use of heated needle probes for measuring snow thermal conductivity |
title_short |
On the use of heated needle probes for measuring snow thermal conductivity |
title_full |
On the use of heated needle probes for measuring snow thermal conductivity |
title_fullStr |
On the use of heated needle probes for measuring snow thermal conductivity |
title_full_unstemmed |
On the use of heated needle probes for measuring snow thermal conductivity |
title_sort |
on the use of heated needle probes for measuring snow thermal conductivity |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03870771 https://hal.science/hal-03870771/document https://hal.science/hal-03870771/file/138-FourteauJG2022.pdf https://doi.org/10.1017/jog.2021.127 |
long_lat |
ENVELOPE(-64.047,-64.047,63.267,63.267) |
geographic |
The Needle |
geographic_facet |
The Needle |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://hal.science/hal-03870771 Journal of Glaciology, 2022, 68 (270), pp.705 - 719. ⟨10.1017/jog.2021.127⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2021.127 hal-03870771 https://hal.science/hal-03870771 https://hal.science/hal-03870771/document https://hal.science/hal-03870771/file/138-FourteauJG2022.pdf doi:10.1017/jog.2021.127 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/jog.2021.127 |
container_title |
Journal of Glaciology |
container_volume |
68 |
container_issue |
270 |
container_start_page |
705 |
op_container_end_page |
719 |
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1786206856527478784 |