Contributions to Arctic sea level from 2003 to 2015
As one of the most remote and inaccessible regions in the world, the sea level in the Arctic is still today in large parts uncertain. Sea level estimates from GRACE and satellite altimetry show disagreements in areas of the Arctic while only few in-situ measurements are present to validate satellite...
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ftdtupubl:oai:pure.atira.dk:publications/de7a5bb1-cce3-4e84-9352-e3c70753854a 2024-05-12T07:57:14+00:00 Contributions to Arctic sea level from 2003 to 2015 Ludwigsen, Carsten A. Andersen, Ole B. 2021 https://orbit.dtu.dk/en/publications/de7a5bb1-cce3-4e84-9352-e3c70753854a https://doi.org/10.1016/j.asr.2019.12.027 https://doi.org/10.11583/DTU.19785409.v2 eng eng https://orbit.dtu.dk/en/publications/de7a5bb1-cce3-4e84-9352-e3c70753854a info:eu-repo/semantics/closedAccess Ludwigsen , C A & Andersen , O B 2021 , ' Contributions to Arctic sea level from 2003 to 2015 ' , Advances in Space Research , vol. 68 , no. 2 , pp. 703-710 . https://doi.org/10.1016/j.asr.2019.12.027 Arctic Sea level Climate change Ocean /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action article 2021 ftdtupubl https://doi.org/10.1016/j.asr.2019.12.02710.11583/DTU.19785409.v2 2024-04-17T15:12:44Z As one of the most remote and inaccessible regions in the world, the sea level in the Arctic is still today in large parts uncertain. Sea level estimates from GRACE and satellite altimetry show disagreements in areas of the Arctic while only few in-situ measurements are present to validate satellite products. By using an independent in-situ based dataset of hydrographic data (DTUSteric), this study compares different available datasets from GRACE and altimetry. The best agreement (R = 0.76) is reached between the combination of DTUSteric and the JPL Mascon solution and the altimetry product from Centre of Polar Observation and Modelling (CPOM). A large residual signal is found in the East Siberian Sea, an area with no in-situ observations and in general uncertain satellite observations. The spatial correlation coefficients ranging from 0.32 to 0.76 reflects a large number of unknowns and uncertainties, with coarse GRACE resolution, extensive interpolation and lack of in-situ data in parts of the Arctic Ocean and uncertainty of the altimetric products being the largest sources of error. In general, we recommended that satellite observations are used carefully in the Arctic. Even this study shows that steric estimates from in-situ observations to some extent can explain the gap between GRACE and altimetry, the observed sea level trend in significant regions of the Arctic cannot be validated with in-situ hydrographic data. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change East Siberian Sea Technical University of Denmark: DTU Orbit Arctic Arctic Ocean East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Arctic Sea level Climate change Ocean /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
Arctic Sea level Climate change Ocean /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Ludwigsen, Carsten A. Andersen, Ole B. Contributions to Arctic sea level from 2003 to 2015 |
topic_facet |
Arctic Sea level Climate change Ocean /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
description |
As one of the most remote and inaccessible regions in the world, the sea level in the Arctic is still today in large parts uncertain. Sea level estimates from GRACE and satellite altimetry show disagreements in areas of the Arctic while only few in-situ measurements are present to validate satellite products. By using an independent in-situ based dataset of hydrographic data (DTUSteric), this study compares different available datasets from GRACE and altimetry. The best agreement (R = 0.76) is reached between the combination of DTUSteric and the JPL Mascon solution and the altimetry product from Centre of Polar Observation and Modelling (CPOM). A large residual signal is found in the East Siberian Sea, an area with no in-situ observations and in general uncertain satellite observations. The spatial correlation coefficients ranging from 0.32 to 0.76 reflects a large number of unknowns and uncertainties, with coarse GRACE resolution, extensive interpolation and lack of in-situ data in parts of the Arctic Ocean and uncertainty of the altimetric products being the largest sources of error. In general, we recommended that satellite observations are used carefully in the Arctic. Even this study shows that steric estimates from in-situ observations to some extent can explain the gap between GRACE and altimetry, the observed sea level trend in significant regions of the Arctic cannot be validated with in-situ hydrographic data. |
format |
Article in Journal/Newspaper |
author |
Ludwigsen, Carsten A. Andersen, Ole B. |
author_facet |
Ludwigsen, Carsten A. Andersen, Ole B. |
author_sort |
Ludwigsen, Carsten A. |
title |
Contributions to Arctic sea level from 2003 to 2015 |
title_short |
Contributions to Arctic sea level from 2003 to 2015 |
title_full |
Contributions to Arctic sea level from 2003 to 2015 |
title_fullStr |
Contributions to Arctic sea level from 2003 to 2015 |
title_full_unstemmed |
Contributions to Arctic sea level from 2003 to 2015 |
title_sort |
contributions to arctic sea level from 2003 to 2015 |
publishDate |
2021 |
url |
https://orbit.dtu.dk/en/publications/de7a5bb1-cce3-4e84-9352-e3c70753854a https://doi.org/10.1016/j.asr.2019.12.027 https://doi.org/10.11583/DTU.19785409.v2 |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic Arctic Ocean East Siberian Sea |
geographic_facet |
Arctic Arctic Ocean East Siberian Sea |
genre |
Arctic Arctic Arctic Ocean Climate change East Siberian Sea |
genre_facet |
Arctic Arctic Arctic Ocean Climate change East Siberian Sea |
op_source |
Ludwigsen , C A & Andersen , O B 2021 , ' Contributions to Arctic sea level from 2003 to 2015 ' , Advances in Space Research , vol. 68 , no. 2 , pp. 703-710 . https://doi.org/10.1016/j.asr.2019.12.027 |
op_relation |
https://orbit.dtu.dk/en/publications/de7a5bb1-cce3-4e84-9352-e3c70753854a |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.asr.2019.12.02710.11583/DTU.19785409.v2 |
_version_ |
1798837626118078464 |