Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica)
Surface mass balances of polar ice sheets are essential to estimate the contribution of ice sheets to sea level rise. Uncertain snow and firn densities lead to significant uncertainties in surface mass balances, especially in the interior regions of the ice sheets, such as the East Antarctic Plateau...
Main Authors: | , , , , |
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Format: | Dataset |
Language: | English |
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PANGAEA
2021
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Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.928079 https://doi.org/10.1594/PANGAEA.928079 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.928079 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antarctica ANT-Land_2016_COFI ANT-Land_2016_COFI_12 ANT-Land_2016_COFI_16 ANT-Land_2016_COFI_19 ANT-Land_2016_COFI_21 ANT-Land_2016_COFI_22 ANT-Land_2016_COFI_23 ANT-Land_2016_COFI_24 ANT-Land_2016_COFI_25 ANT-Land_2016_COFI_26 ANT-Land_2016_COFI_27 ANT-Land_2016_COFI_4 ANT-Land_2016_COFI_44 ANT-Land_2016_COFI_56 ANT-Land_2016_COFI_60 ANT-Land_2016_COFI_64 ANT-Land_2016_COFI_69 ANT-Land_2016_COFI_71 ANT-Land_2016_COFI_73 ANT-Land_2016_COFI_75 ANT-Land_2016_COFI_77 ANT-Land_2016_COFI_79 ANT-Land_2016_COFI_8 DATE/TIME density snow mean standard deviation DML East Antarctica ELEVATION Event label Kohnen Kohnen Station LATITUDE Location LONGITUDE Number of profiles Snow/ice sample Volumetric measurement |
spellingShingle |
Antarctica ANT-Land_2016_COFI ANT-Land_2016_COFI_12 ANT-Land_2016_COFI_16 ANT-Land_2016_COFI_19 ANT-Land_2016_COFI_21 ANT-Land_2016_COFI_22 ANT-Land_2016_COFI_23 ANT-Land_2016_COFI_24 ANT-Land_2016_COFI_25 ANT-Land_2016_COFI_26 ANT-Land_2016_COFI_27 ANT-Land_2016_COFI_4 ANT-Land_2016_COFI_44 ANT-Land_2016_COFI_56 ANT-Land_2016_COFI_60 ANT-Land_2016_COFI_64 ANT-Land_2016_COFI_69 ANT-Land_2016_COFI_71 ANT-Land_2016_COFI_73 ANT-Land_2016_COFI_75 ANT-Land_2016_COFI_77 ANT-Land_2016_COFI_79 ANT-Land_2016_COFI_8 DATE/TIME density snow mean standard deviation DML East Antarctica ELEVATION Event label Kohnen Kohnen Station LATITUDE Location LONGITUDE Number of profiles Snow/ice sample Volumetric measurement Weinhart, Alexander Helmut Freitag, Johannes Hörhold, Maria Kipfstuhl, Sepp Eisen, Olaf Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) |
topic_facet |
Antarctica ANT-Land_2016_COFI ANT-Land_2016_COFI_12 ANT-Land_2016_COFI_16 ANT-Land_2016_COFI_19 ANT-Land_2016_COFI_21 ANT-Land_2016_COFI_22 ANT-Land_2016_COFI_23 ANT-Land_2016_COFI_24 ANT-Land_2016_COFI_25 ANT-Land_2016_COFI_26 ANT-Land_2016_COFI_27 ANT-Land_2016_COFI_4 ANT-Land_2016_COFI_44 ANT-Land_2016_COFI_56 ANT-Land_2016_COFI_60 ANT-Land_2016_COFI_64 ANT-Land_2016_COFI_69 ANT-Land_2016_COFI_71 ANT-Land_2016_COFI_73 ANT-Land_2016_COFI_75 ANT-Land_2016_COFI_77 ANT-Land_2016_COFI_79 ANT-Land_2016_COFI_8 DATE/TIME density snow mean standard deviation DML East Antarctica ELEVATION Event label Kohnen Kohnen Station LATITUDE Location LONGITUDE Number of profiles Snow/ice sample Volumetric measurement |
description |
Surface mass balances of polar ice sheets are essential to estimate the contribution of ice sheets to sea level rise. Uncertain snow and firn densities lead to significant uncertainties in surface mass balances, especially in the interior regions of the ice sheets, such as the East Antarctic Plateau (EAP). Robust field measurements of surface snow density are sparse and challenging due to local noise. Here, we present a snow density dataset from an overland traverse in austral summer 2016/17 on the Dronning Maud Land plateau. The sampling strategy using 1 m carbon fiber tubes covered various spatial scales, as well as a high-resolution study in a trench at 79°S, 30°E. The 1 m snow density has been derived volumetrically, and vertical snow profiles have been measured using a core-scale microfocus X-ray computer tomograph. With an error of less than 2%, our method provides higher precision than other sampling devices of smaller volume. With four spatially independent snow profiles per location, we reduce the local noise and derive a representative 1 m snow density with an error of the mean of less than 1.5%. Assessing sampling methods used in previous studies, we find the highest horizontal variability in density in the upper 0.3 m and therefore recommend the 1 m snow density as a robust measure of surface snow density in future studies. The average 1 m snow density across the EAP is 355 kg m-3, which we identify as representative surface snow density between Kohnen Station and Dome Fuji. We cannot detect a temporal trend caused by the temperature increase over the last 2 decades. A difference of more than 10% to the density of 320 kg m-3 suggested by a semiempirical firn model for the same region indicates the necessity for further calibration of surface snow density parameterizations. Our data provide a solid baseline for tuning the surface snow density parameterizations for regions with low accumulation and low temperatures like the EAP. |
format |
Dataset |
author |
Weinhart, Alexander Helmut Freitag, Johannes Hörhold, Maria Kipfstuhl, Sepp Eisen, Olaf |
author_facet |
Weinhart, Alexander Helmut Freitag, Johannes Hörhold, Maria Kipfstuhl, Sepp Eisen, Olaf |
author_sort |
Weinhart, Alexander Helmut |
title |
Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) |
title_short |
Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) |
title_full |
Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) |
title_fullStr |
Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) |
title_full_unstemmed |
Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) |
title_sort |
surface snow density along an overland traverse between kohnen station and former plateau station (east antarctica) |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.928079 https://doi.org/10.1594/PANGAEA.928079 |
op_coverage |
MEDIAN LATITUDE: -77.161818 * MEDIAN LONGITUDE: 20.164545 * SOUTH-BOUND LATITUDE: -79.330000 * WEST-BOUND LONGITUDE: 2.890000 * NORTH-BOUND LATITUDE: -75.110000 * EAST-BOUND LONGITUDE: 40.560000 * DATE/TIME START: 2016-12-14T00:00:00 * DATE/TIME END: 2017-01-28T00:00:00 * MINIMUM ELEVATION: 2959 m a.s.l. * MAXIMUM ELEVATION: 3737 m a.s.l. |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(2.890000,40.560000,-75.110000,-79.330000) |
geographic |
Antarctic Austral Dome Fuji Dronning Maud Land East Antarctica Kohnen Kohnen Station |
geographic_facet |
Antarctic Austral Dome Fuji Dronning Maud Land East Antarctica Kohnen Kohnen Station |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica The Cryosphere |
op_relation |
Weinhart, Alexander Helmut; Freitag, Johannes; Hörhold, Maria; Kipfstuhl, Sepp; Eisen, Olaf (2020): Representative surface snow density on the East Antarctic Plateau. The Cryosphere, 14(11), 3663-3685, https://doi.org/10.5194/tc-14-3663-2020 Sampling setup (URI: https://store.pangaea.de/Publications/WeinhartAH-etal_2021/Sampling_setup.png) https://doi.pangaea.de/10.1594/PANGAEA.928079 https://doi.org/10.1594/PANGAEA.928079 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.928079 https://doi.org/10.5194/tc-14-3663-2020 |
_version_ |
1766276537009569792 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.928079 2023-05-15T14:04:58+02:00 Surface snow density along an overland traverse between Kohnen Station and former Plateau Station (East Antarctica) Weinhart, Alexander Helmut Freitag, Johannes Hörhold, Maria Kipfstuhl, Sepp Eisen, Olaf MEDIAN LATITUDE: -77.161818 * MEDIAN LONGITUDE: 20.164545 * SOUTH-BOUND LATITUDE: -79.330000 * WEST-BOUND LONGITUDE: 2.890000 * NORTH-BOUND LATITUDE: -75.110000 * EAST-BOUND LONGITUDE: 40.560000 * DATE/TIME START: 2016-12-14T00:00:00 * DATE/TIME END: 2017-01-28T00:00:00 * MINIMUM ELEVATION: 2959 m a.s.l. * MAXIMUM ELEVATION: 3737 m a.s.l. 2021-02-16 text/tab-separated-values, 88 data points https://doi.pangaea.de/10.1594/PANGAEA.928079 https://doi.org/10.1594/PANGAEA.928079 en eng PANGAEA Weinhart, Alexander Helmut; Freitag, Johannes; Hörhold, Maria; Kipfstuhl, Sepp; Eisen, Olaf (2020): Representative surface snow density on the East Antarctic Plateau. The Cryosphere, 14(11), 3663-3685, https://doi.org/10.5194/tc-14-3663-2020 Sampling setup (URI: https://store.pangaea.de/Publications/WeinhartAH-etal_2021/Sampling_setup.png) https://doi.pangaea.de/10.1594/PANGAEA.928079 https://doi.org/10.1594/PANGAEA.928079 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Antarctica ANT-Land_2016_COFI ANT-Land_2016_COFI_12 ANT-Land_2016_COFI_16 ANT-Land_2016_COFI_19 ANT-Land_2016_COFI_21 ANT-Land_2016_COFI_22 ANT-Land_2016_COFI_23 ANT-Land_2016_COFI_24 ANT-Land_2016_COFI_25 ANT-Land_2016_COFI_26 ANT-Land_2016_COFI_27 ANT-Land_2016_COFI_4 ANT-Land_2016_COFI_44 ANT-Land_2016_COFI_56 ANT-Land_2016_COFI_60 ANT-Land_2016_COFI_64 ANT-Land_2016_COFI_69 ANT-Land_2016_COFI_71 ANT-Land_2016_COFI_73 ANT-Land_2016_COFI_75 ANT-Land_2016_COFI_77 ANT-Land_2016_COFI_79 ANT-Land_2016_COFI_8 DATE/TIME density snow mean standard deviation DML East Antarctica ELEVATION Event label Kohnen Kohnen Station LATITUDE Location LONGITUDE Number of profiles Snow/ice sample Volumetric measurement Dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.928079 https://doi.org/10.5194/tc-14-3663-2020 2023-01-20T09:14:28Z Surface mass balances of polar ice sheets are essential to estimate the contribution of ice sheets to sea level rise. Uncertain snow and firn densities lead to significant uncertainties in surface mass balances, especially in the interior regions of the ice sheets, such as the East Antarctic Plateau (EAP). Robust field measurements of surface snow density are sparse and challenging due to local noise. Here, we present a snow density dataset from an overland traverse in austral summer 2016/17 on the Dronning Maud Land plateau. The sampling strategy using 1 m carbon fiber tubes covered various spatial scales, as well as a high-resolution study in a trench at 79°S, 30°E. The 1 m snow density has been derived volumetrically, and vertical snow profiles have been measured using a core-scale microfocus X-ray computer tomograph. With an error of less than 2%, our method provides higher precision than other sampling devices of smaller volume. With four spatially independent snow profiles per location, we reduce the local noise and derive a representative 1 m snow density with an error of the mean of less than 1.5%. Assessing sampling methods used in previous studies, we find the highest horizontal variability in density in the upper 0.3 m and therefore recommend the 1 m snow density as a robust measure of surface snow density in future studies. The average 1 m snow density across the EAP is 355 kg m-3, which we identify as representative surface snow density between Kohnen Station and Dome Fuji. We cannot detect a temporal trend caused by the temperature increase over the last 2 decades. A difference of more than 10% to the density of 320 kg m-3 suggested by a semiempirical firn model for the same region indicates the necessity for further calibration of surface snow density parameterizations. Our data provide a solid baseline for tuning the surface snow density parameterizations for regions with low accumulation and low temperatures like the EAP. Dataset Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica The Cryosphere PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Austral Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dronning Maud Land East Antarctica Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) Kohnen Station ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(2.890000,40.560000,-75.110000,-79.330000) |