Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components
We investigate sea level change and variability in some areas of the Arctic region over the 1950–2009 period. Analysis of 62 long tide gauge records available during the studied period along the Norwegian and Russian coastlines shows that coastal mean sea level (corrected for Glacial Isostatic Adjus...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2012
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/19304/ https://doi.org/10.1029/2011JC007706 |
id |
ftnerc:oai:nora.nerc.ac.uk:19304 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:19304 2023-05-15T14:26:41+02:00 Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components Henry, O. Prandi, P. Llovel, W. Cazenave, A. Jevrejeva, S. Stammer, D. Meyssignac, B. Koldunov, N. 2012 http://nora.nerc.ac.uk/id/eprint/19304/ https://doi.org/10.1029/2011JC007706 unknown Henry, O.; Prandi, P.; Llovel, W.; Cazenave, A.; Jevrejeva, S. orcid:0000-0001-9490-4665 Stammer, D.; Meyssignac, B.; Koldunov, N. 2012 Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components. Journal of Geophysical Research, 117 (C6). C06023. https://doi.org/10.1029/2011JC007706 <https://doi.org/10.1029/2011JC007706> Marine Sciences Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.1029/2011JC007706 2023-02-04T19:32:13Z We investigate sea level change and variability in some areas of the Arctic region over the 1950–2009 period. Analysis of 62 long tide gauge records available during the studied period along the Norwegian and Russian coastlines shows that coastal mean sea level (corrected for Glacial Isostatic Adjustment and inverted barometer effects) in these two areas was almost stable until about 1980 but since then displayed a clear increasing trend. Until the mid-1990s, the mean coastal sea level closely follows the fluctuations of the Arctic Oscillation (AO) index, but after the mid-to-late 1990s the co-fluctuation with the AO disappears. Since 1995, the coastal mean sea level (average of the Norwegian and Russian tide gauge data) presents an increasing trend of ∼4 mm/yr. Using in situ ocean temperature and salinity data down to 700 m from three different databases, we estimated the thermosteric, halosteric and steric (sum of thermosteric and halosteric) sea level since 1970 in the North Atlantic and Nordic Seas region (incomplete data coverage prevented us from analyzing steric data along the Russian coast). We note a strong anti-correlation between the thermosteric and halosteric components both in terms of spatial trends and regionally averaged time series. The latter show a strong change as of ∼1995 that indicates simultaneous increase in temperature and salinity, a result confirmed by the Empirical Orthogonal Function decomposition over the studied region. Regionally distributed steric data are compared to altimetry-based sea level over 1993–2009. Spatial trend patterns of observed (altimetry-based) sea level over 1993–2009 are largely explained by steric patterns, but residual spatial trends suggest that other factors contribute, in particular regional ocean mass changes. Focusing again on Norwegian tide gauges, we then compare observed coastal mean sea level with the steric sea level and the ocean mass component estimated with GRACE space gravimetry data and conclude that the mass component has been increasing ... Article in Journal/Newspaper Arctic Arctic Arctic Ocean Nordic Seas North Atlantic Natural Environment Research Council: NERC Open Research Archive Arctic Arctic Ocean Journal of Geophysical Research: Oceans 117 C6 n/a n/a |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences |
spellingShingle |
Marine Sciences Henry, O. Prandi, P. Llovel, W. Cazenave, A. Jevrejeva, S. Stammer, D. Meyssignac, B. Koldunov, N. Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components |
topic_facet |
Marine Sciences |
description |
We investigate sea level change and variability in some areas of the Arctic region over the 1950–2009 period. Analysis of 62 long tide gauge records available during the studied period along the Norwegian and Russian coastlines shows that coastal mean sea level (corrected for Glacial Isostatic Adjustment and inverted barometer effects) in these two areas was almost stable until about 1980 but since then displayed a clear increasing trend. Until the mid-1990s, the mean coastal sea level closely follows the fluctuations of the Arctic Oscillation (AO) index, but after the mid-to-late 1990s the co-fluctuation with the AO disappears. Since 1995, the coastal mean sea level (average of the Norwegian and Russian tide gauge data) presents an increasing trend of ∼4 mm/yr. Using in situ ocean temperature and salinity data down to 700 m from three different databases, we estimated the thermosteric, halosteric and steric (sum of thermosteric and halosteric) sea level since 1970 in the North Atlantic and Nordic Seas region (incomplete data coverage prevented us from analyzing steric data along the Russian coast). We note a strong anti-correlation between the thermosteric and halosteric components both in terms of spatial trends and regionally averaged time series. The latter show a strong change as of ∼1995 that indicates simultaneous increase in temperature and salinity, a result confirmed by the Empirical Orthogonal Function decomposition over the studied region. Regionally distributed steric data are compared to altimetry-based sea level over 1993–2009. Spatial trend patterns of observed (altimetry-based) sea level over 1993–2009 are largely explained by steric patterns, but residual spatial trends suggest that other factors contribute, in particular regional ocean mass changes. Focusing again on Norwegian tide gauges, we then compare observed coastal mean sea level with the steric sea level and the ocean mass component estimated with GRACE space gravimetry data and conclude that the mass component has been increasing ... |
format |
Article in Journal/Newspaper |
author |
Henry, O. Prandi, P. Llovel, W. Cazenave, A. Jevrejeva, S. Stammer, D. Meyssignac, B. Koldunov, N. |
author_facet |
Henry, O. Prandi, P. Llovel, W. Cazenave, A. Jevrejeva, S. Stammer, D. Meyssignac, B. Koldunov, N. |
author_sort |
Henry, O. |
title |
Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components |
title_short |
Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components |
title_full |
Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components |
title_fullStr |
Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components |
title_full_unstemmed |
Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components |
title_sort |
tide gauge-based sea level variations since 1950 along the norwegian and russian coasts of the arctic ocean: contribution of the steric and mass components |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/19304/ https://doi.org/10.1029/2011JC007706 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Nordic Seas North Atlantic |
genre_facet |
Arctic Arctic Arctic Ocean Nordic Seas North Atlantic |
op_relation |
Henry, O.; Prandi, P.; Llovel, W.; Cazenave, A.; Jevrejeva, S. orcid:0000-0001-9490-4665 Stammer, D.; Meyssignac, B.; Koldunov, N. 2012 Tide gauge-based sea level variations since 1950 along the Norwegian and Russian coasts of the Arctic Ocean: Contribution of the steric and mass components. Journal of Geophysical Research, 117 (C6). C06023. https://doi.org/10.1029/2011JC007706 <https://doi.org/10.1029/2011JC007706> |
op_doi |
https://doi.org/10.1029/2011JC007706 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
117 |
container_issue |
C6 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766299961942605824 |