Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica
The surface mass balance (SMB) is very low over the vast East Antarctic Plateau, for example in the Vostok region, where the mean SMB is on the order of 20–35 kg m-2 a-1. The observation and modeling of spatio-temporal SMB variations are equally challenging in this environment. Stake measurements ca...
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ftconicet:oai:ri.conicet.gov.ar:11336/164427 2023-10-09T21:47:05+02:00 Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica Richter, Andreas Jorg Ekaykin, Alexey A. Willen, Matthias O. Lipenkov, Vladimir Ya. Groh, Andreas Popov, Sergey V. Scheinert, Mirko Horwath, Martin Dietrich, Reinhard application/pdf http://hdl.handle.net/11336/164427 eng eng Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2021.669977 info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/feart.2021.669977/full http://hdl.handle.net/11336/164427 Richter, Andreas Jorg; Ekaykin, Alexey A.; Willen, Matthias O.; Lipenkov, Vladimir Ya.; Groh, Andreas; et al.; Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica; Frontiers Media; Frontiers in Earth Science; 9; 5-2021; 1-14 2095-0195 2296-6463 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTICA REGIONAL CLIMATE MODELS STAKE OBSERVATIONS SURFACE MASS BALANCE VOSTOK https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3389/feart.2021.669977 2023-09-24T19:44:25Z The surface mass balance (SMB) is very low over the vast East Antarctic Plateau, for example in the Vostok region, where the mean SMB is on the order of 20–35 kg m-2 a-1. The observation and modeling of spatio-temporal SMB variations are equally challenging in this environment. Stake measurements carried out in the Vostok region provide SMB observations over half a century (1970–2019). This unique data set is compared with SMB estimations of the regional climate models RACMO2.3p2 (RACMO) and MAR3.11 (MAR). We focus on the SMB variations over time scales from months to decades. The comparison requires a rigorous assessment of the uncertainty in the stake observations and the spatial scale dependence of the temporal SMB variations. Our results show that RACMO estimates of annual and multi-year SMB agree well with the observations. The regression slope between modelled and observed temporal variations is close to 1.0 for this model. SMB simulations by MAR are affected by a positive bias which amounts to 6 kg m-2 a-1 at Vostok station and 2 kg m-2 a-1 along two stake profiles between Lake Vostok and Ridge B. None of the models is capable to reproduce the seasonal distributions of SMB and precipitation. Model SMB estimates are used in assessing the ice-mass balance and sea-level contribution of the Antarctic Ice Sheet by the input-output method. Our results provide insights into the uncertainty contribution of the SMB models to such assessments. Fil: Richter, Andreas Jorg. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Astrometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Technische Universität Dresden; Alemania Fil: Ekaykin, Alexey A. Arctic And Antarctic Research Institute; Rusia. Saint Petersburg State University; Rusia Fil: Willen, Matthias O. Technische Universität Dresden; Alemania Fil: Lipenkov, Vladimir Ya. Arctic And Antarctic Research Institute; Rusia Fil: ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic and Antarctic Research Institute Arctic East Antarctica Ice Sheet CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Arctic Antarctic The Antarctic East Antarctica Argentina Andreas ENVELOPE(-60.729,-60.729,-64.008,-64.008) Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Vostok Station ENVELOPE(106.837,106.837,-78.464,-78.464) Frontiers in Earth Science 9 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTICA REGIONAL CLIMATE MODELS STAKE OBSERVATIONS SURFACE MASS BALANCE VOSTOK https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTICA REGIONAL CLIMATE MODELS STAKE OBSERVATIONS SURFACE MASS BALANCE VOSTOK https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Richter, Andreas Jorg Ekaykin, Alexey A. Willen, Matthias O. Lipenkov, Vladimir Ya. Groh, Andreas Popov, Sergey V. Scheinert, Mirko Horwath, Martin Dietrich, Reinhard Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
topic_facet |
ANTARCTICA REGIONAL CLIMATE MODELS STAKE OBSERVATIONS SURFACE MASS BALANCE VOSTOK https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The surface mass balance (SMB) is very low over the vast East Antarctic Plateau, for example in the Vostok region, where the mean SMB is on the order of 20–35 kg m-2 a-1. The observation and modeling of spatio-temporal SMB variations are equally challenging in this environment. Stake measurements carried out in the Vostok region provide SMB observations over half a century (1970–2019). This unique data set is compared with SMB estimations of the regional climate models RACMO2.3p2 (RACMO) and MAR3.11 (MAR). We focus on the SMB variations over time scales from months to decades. The comparison requires a rigorous assessment of the uncertainty in the stake observations and the spatial scale dependence of the temporal SMB variations. Our results show that RACMO estimates of annual and multi-year SMB agree well with the observations. The regression slope between modelled and observed temporal variations is close to 1.0 for this model. SMB simulations by MAR are affected by a positive bias which amounts to 6 kg m-2 a-1 at Vostok station and 2 kg m-2 a-1 along two stake profiles between Lake Vostok and Ridge B. None of the models is capable to reproduce the seasonal distributions of SMB and precipitation. Model SMB estimates are used in assessing the ice-mass balance and sea-level contribution of the Antarctic Ice Sheet by the input-output method. Our results provide insights into the uncertainty contribution of the SMB models to such assessments. Fil: Richter, Andreas Jorg. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Departamento de Astrometría; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Technische Universität Dresden; Alemania Fil: Ekaykin, Alexey A. Arctic And Antarctic Research Institute; Rusia. Saint Petersburg State University; Rusia Fil: Willen, Matthias O. Technische Universität Dresden; Alemania Fil: Lipenkov, Vladimir Ya. Arctic And Antarctic Research Institute; Rusia Fil: ... |
format |
Article in Journal/Newspaper |
author |
Richter, Andreas Jorg Ekaykin, Alexey A. Willen, Matthias O. Lipenkov, Vladimir Ya. Groh, Andreas Popov, Sergey V. Scheinert, Mirko Horwath, Martin Dietrich, Reinhard |
author_facet |
Richter, Andreas Jorg Ekaykin, Alexey A. Willen, Matthias O. Lipenkov, Vladimir Ya. Groh, Andreas Popov, Sergey V. Scheinert, Mirko Horwath, Martin Dietrich, Reinhard |
author_sort |
Richter, Andreas Jorg |
title |
Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
title_short |
Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
title_full |
Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
title_fullStr |
Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
title_full_unstemmed |
Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica |
title_sort |
surface mass balance models vs. stake observations: a comparison in the lake vostok region, central east antarctica |
publisher |
Frontiers Media |
url |
http://hdl.handle.net/11336/164427 |
long_lat |
ENVELOPE(-60.729,-60.729,-64.008,-64.008) ENVELOPE(106.000,106.000,-77.500,-77.500) ENVELOPE(106.837,106.837,-78.464,-78.464) |
geographic |
Arctic Antarctic The Antarctic East Antarctica Argentina Andreas Lake Vostok Vostok Station |
geographic_facet |
Arctic Antarctic The Antarctic East Antarctica Argentina Andreas Lake Vostok Vostok Station |
genre |
Antarc* Antarctic Antarctica Arctic and Antarctic Research Institute Arctic East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Arctic and Antarctic Research Institute Arctic East Antarctica Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/feart.2021.669977 info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/feart.2021.669977/full http://hdl.handle.net/11336/164427 Richter, Andreas Jorg; Ekaykin, Alexey A.; Willen, Matthias O.; Lipenkov, Vladimir Ya.; Groh, Andreas; et al.; Surface Mass Balance Models Vs. Stake Observations: A Comparison in the Lake Vostok Region, Central East Antarctica; Frontiers Media; Frontiers in Earth Science; 9; 5-2021; 1-14 2095-0195 2296-6463 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3389/feart.2021.669977 |
container_title |
Frontiers in Earth Science |
container_volume |
9 |
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1779309833688711168 |