the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Sea level variability in the Arctic Ocean observed by satellite altimetry
P. Prandi
M. Ablain
A. Cazenave
N. Picot
Abstract. We investigate sea level variability in the Arctic Ocean from observations. Variability estimates are derived both at the basin scale and on smaller local spatial scales. The periods of the signals studied vary from high frequency (intra-annual) to long term trends. We also investigate the mechanisms responsible for the observed variability. Different data types are used, the main one being a recent reprocessing of satellite altimetry data in the Arctic Ocean.
Satellite altimetry data is compared to tide gauges measurements, steric sea level derived from temperature and salinity fields and GRACE ocean mass estimates. We establish a consistent regional sea level budget over the GRACE availability era (2003–2009) showing that the sea level drop observed by altimetry over this period is driven by ocean mass loss rather than steric effects. The comparison of altimetry and tide gauges time series show that the two techniques are in good agreement regarding sea level trends. Coastal areas of high variability in the altimetry record are also consistent with tide gauges records. An EOF analysis of September mean altimetry fields allows identifying two regions of wind driven variability in the Arctic Ocean: the Beaufort Gyre region and the coastal European and Russian Arctic. Such patterns are related to atmospheric regimes through the Arctic Oscillation and Dipole Anomaly.
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P. Prandi et al.
Interactive discussion


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RC C921: 'review of the manuscript (OS-2012-66) entitled "Sea level variability in the Arctic Ocean observed by satellite altimetry” by P. Prandi et al.', Anonymous Referee #1, 10 Sep 2012
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AC C1567: 'response to review of manuscript by anonymous referee #1', Pierre Prandi, 01 Feb 2013
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AC C1567: 'response to review of manuscript by anonymous referee #1', Pierre Prandi, 01 Feb 2013
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SC C1082: 'Arctic sea level on the shelf, and tide gauges', Christopher W. Hughes, 26 Sep 2012
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RC C1175: 'Review of the manuscript by P. Prandi et al. "Sea level variability in the Arctic Ocean observed with satellite altimetry"', Anonymous Referee #2, 22 Oct 2012
Interactive discussion


-
RC C921: 'review of the manuscript (OS-2012-66) entitled "Sea level variability in the Arctic Ocean observed by satellite altimetry” by P. Prandi et al.', Anonymous Referee #1, 10 Sep 2012
-
AC C1567: 'response to review of manuscript by anonymous referee #1', Pierre Prandi, 01 Feb 2013
-
AC C1567: 'response to review of manuscript by anonymous referee #1', Pierre Prandi, 01 Feb 2013
-
SC C1082: 'Arctic sea level on the shelf, and tide gauges', Christopher W. Hughes, 26 Sep 2012
-
RC C1175: 'Review of the manuscript by P. Prandi et al. "Sea level variability in the Arctic Ocean observed with satellite altimetry"', Anonymous Referee #2, 22 Oct 2012
P. Prandi et al.
P. Prandi et al.
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Cited
4 citations as recorded by crossref.
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- Toward Improved Estimation of the Dynamic Topography and Ocean Circulation in the High Latitude and Arctic Ocean: The Importance of GOCE J. Johannessen et al. 10.1007/s10712-013-9270-y
- Multimodel simulations of Arctic Ocean sea surface height variability in the period 1970–2009 N. Koldunov et al. 10.1002/2014JC010170
- Low-frequency sea level variability and impact of recent sea ice decline on the sea level trend in the Arctic Ocean from a high-resolution simulation K. Xiao et al. 10.1007/s10236-020-01373-5