Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway
Independent measurements of radiation, sensible and latent heat fluxes and the ground heat flux are used to describe the annual cycle of the surface energy budget at a high-arctic permafrost site on Svalbard. During summer, the net short-wave radiation is the dominant energy source, while well devel...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746722 2023-05-15T14:25:28+02:00 Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway Westermann, Sebastian Lüers, Johannes Langer, Moritz Piel, Konstanze Boike, Julia MEDIAN LATITUDE: 78.922229 * MEDIAN LONGITUDE: 11.841357 * SOUTH-BOUND LATITUDE: 78.921320 * WEST-BOUND LONGITUDE: 11.831330 * NORTH-BOUND LATITUDE: 78.924300 * EAST-BOUND LONGITUDE: 11.855750 * DATE/TIME START: 2008-03-27T12:00:00 * DATE/TIME END: 2009-03-21T12:00:00 2009-10-21 application/zip, 8 datasets https://doi.pangaea.de/10.1594/PANGAEA.746722 https://doi.org/10.1594/PANGAEA.746722 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746722 https://doi.org/10.1594/PANGAEA.746722 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Westermann, Sebastian; Lüers, Johannes; Langer, Moritz; Piel, Konstanze; Boike, Julia (2009): The annual surface energy budget of a high-arctic permafrost site on Svalbard, Norway. The Cryosphere, 3, 245-263, https://doi.org/10.5194/tc-3-245-2009 AWI_PerDyn AWIPEV Monitoring station MONS NYA_LH_2008 NYA_Meteorological_Obs NYA_P2 NYA_P3 NYA_S1 NYA_S2 NYA_S3 NYA_S4 NYA_S5 Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI SNOWPIT Snow pit Thermal imaging system TIS Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.746722 https://doi.org/10.5194/tc-3-245-2009 2023-01-20T07:31:57Z Independent measurements of radiation, sensible and latent heat fluxes and the ground heat flux are used to describe the annual cycle of the surface energy budget at a high-arctic permafrost site on Svalbard. During summer, the net short-wave radiation is the dominant energy source, while well developed turbulent processes and the heat flux in the ground lead to a cooling of the surface. About 15% of the net radiation is consumed by the seasonal thawing of the active layer in July and August. The Bowen ratio is found to vary between 0.25 and 2, depending on water content of the uppermost soil layer. During the polar night in winter, the net long-wave radiation is the dominant energy loss channel for the surface, which is mainly compensated by the sensible heat flux and, to a lesser extent, by the ground heat flux, which originates from the refreezing of the active layer. The average annual sensible heat flux of -6.9 W/m**2 is composed of strong positive fluxes in July and August, while negative fluxes dominate during the rest of the year. With 6.8 W/m**2, the latent heat flux more or less compensates the sensible heat flux in the annual average. Strong evaporation occurs during the snow melt period and particularly during the snow-free period in summer and fall. When the ground is covered by snow, latent heat fluxes through sublimation of snow are recorded, but are insignificant for the average surface energy budget. The near-surface atmospheric stratification is found to be predominantly unstable to neutral, when the ground is snow-free, and stable to neutral for snow-covered ground. Due to long-lasting near-surface inversions in winter, an average temperature difference of approximately 3 K exists between the air temperature at 10 m height and the surface temperature of the snow. Dataset Arctic Arctic Ny Ålesund Ny-Ålesund permafrost polar night Svalbard The Cryosphere Spitsbergen PANGAEA - Data Publisher for Earth & Environmental Science Arctic Norway Ny-Ålesund Svalbard ENVELOPE(11.831330,11.855750,78.924300,78.921320) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn AWIPEV Monitoring station MONS NYA_LH_2008 NYA_Meteorological_Obs NYA_P2 NYA_P3 NYA_S1 NYA_S2 NYA_S3 NYA_S4 NYA_S5 Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI SNOWPIT Snow pit Thermal imaging system TIS |
spellingShingle |
AWI_PerDyn AWIPEV Monitoring station MONS NYA_LH_2008 NYA_Meteorological_Obs NYA_P2 NYA_P3 NYA_S1 NYA_S2 NYA_S3 NYA_S4 NYA_S5 Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI SNOWPIT Snow pit Thermal imaging system TIS Westermann, Sebastian Lüers, Johannes Langer, Moritz Piel, Konstanze Boike, Julia Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway |
topic_facet |
AWI_PerDyn AWIPEV Monitoring station MONS NYA_LH_2008 NYA_Meteorological_Obs NYA_P2 NYA_P3 NYA_S1 NYA_S2 NYA_S3 NYA_S4 NYA_S5 Ny-Ålesund Spitsbergen Permafrost Research (Periglacial Dynamics) @ AWI SNOWPIT Snow pit Thermal imaging system TIS |
description |
Independent measurements of radiation, sensible and latent heat fluxes and the ground heat flux are used to describe the annual cycle of the surface energy budget at a high-arctic permafrost site on Svalbard. During summer, the net short-wave radiation is the dominant energy source, while well developed turbulent processes and the heat flux in the ground lead to a cooling of the surface. About 15% of the net radiation is consumed by the seasonal thawing of the active layer in July and August. The Bowen ratio is found to vary between 0.25 and 2, depending on water content of the uppermost soil layer. During the polar night in winter, the net long-wave radiation is the dominant energy loss channel for the surface, which is mainly compensated by the sensible heat flux and, to a lesser extent, by the ground heat flux, which originates from the refreezing of the active layer. The average annual sensible heat flux of -6.9 W/m**2 is composed of strong positive fluxes in July and August, while negative fluxes dominate during the rest of the year. With 6.8 W/m**2, the latent heat flux more or less compensates the sensible heat flux in the annual average. Strong evaporation occurs during the snow melt period and particularly during the snow-free period in summer and fall. When the ground is covered by snow, latent heat fluxes through sublimation of snow are recorded, but are insignificant for the average surface energy budget. The near-surface atmospheric stratification is found to be predominantly unstable to neutral, when the ground is snow-free, and stable to neutral for snow-covered ground. Due to long-lasting near-surface inversions in winter, an average temperature difference of approximately 3 K exists between the air temperature at 10 m height and the surface temperature of the snow. |
format |
Dataset |
author |
Westermann, Sebastian Lüers, Johannes Langer, Moritz Piel, Konstanze Boike, Julia |
author_facet |
Westermann, Sebastian Lüers, Johannes Langer, Moritz Piel, Konstanze Boike, Julia |
author_sort |
Westermann, Sebastian |
title |
Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway |
title_short |
Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway |
title_full |
Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway |
title_fullStr |
Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway |
title_full_unstemmed |
Temperature time series and physical properties of snow samples of a high-arctic permafrost site on Svalbard, Norway |
title_sort |
temperature time series and physical properties of snow samples of a high-arctic permafrost site on svalbard, norway |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746722 https://doi.org/10.1594/PANGAEA.746722 |
op_coverage |
MEDIAN LATITUDE: 78.922229 * MEDIAN LONGITUDE: 11.841357 * SOUTH-BOUND LATITUDE: 78.921320 * WEST-BOUND LONGITUDE: 11.831330 * NORTH-BOUND LATITUDE: 78.924300 * EAST-BOUND LONGITUDE: 11.855750 * DATE/TIME START: 2008-03-27T12:00:00 * DATE/TIME END: 2009-03-21T12:00:00 |
long_lat |
ENVELOPE(11.831330,11.855750,78.924300,78.921320) |
geographic |
Arctic Norway Ny-Ålesund Svalbard |
geographic_facet |
Arctic Norway Ny-Ålesund Svalbard |
genre |
Arctic Arctic Ny Ålesund Ny-Ålesund permafrost polar night Svalbard The Cryosphere Spitsbergen |
genre_facet |
Arctic Arctic Ny Ålesund Ny-Ålesund permafrost polar night Svalbard The Cryosphere Spitsbergen |
op_source |
Supplement to: Westermann, Sebastian; Lüers, Johannes; Langer, Moritz; Piel, Konstanze; Boike, Julia (2009): The annual surface energy budget of a high-arctic permafrost site on Svalbard, Norway. The Cryosphere, 3, 245-263, https://doi.org/10.5194/tc-3-245-2009 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746722 https://doi.org/10.1594/PANGAEA.746722 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.746722 https://doi.org/10.5194/tc-3-245-2009 |
_version_ |
1766297861728763904 |