The final, formatted version of the article will be published soon.
METHODS article
Front. Mar. Sci.
Sec. Ocean Observation
Volume 11 - 2024 |
doi: 10.3389/fmars.2024.1419132
Arctic and Southern Ocean polar sea level maps and along-tracks from multi-mission satellite altimetry from 2011 to 2021
Provisionally accepted- 1 Collecte Localisation Satellites (CLS), Toulouse, France
- 2 Centre National d’Etudes Spatiales (CNES), Paris, France
Polar sea surface height observation by radar altimeters requires missions with high latitudes orbit and specific processing to observe the sea-ice covered region within fractures in the ice. Here, we combine sea surface height estimates from different radar satellites over the ice-free and the ice-covered polar oceans to create cross-calibrated along-tracks and gridded products over the Arctic Ocean (2011-2021) and the Southern Ocean (2013-2021). The sea surface height from our regional polar products is in great agreement with tide gauges and bottom pressure recorders at monthly timescales in seasonally to year-round ice-covered regions. Thanks to the use of several missions and the mapping strategy, our multi-mission products have a greater resolution than mono-mission products. Part of the sea level variability of the Arctic Ocean product is related to the Arctic Oscillation atmospheric circulation. At long-term, the Arctic altimetry sea level is coherent with in-situ steric height evolution in the Beaufort gyre and negative sea level trends over the 10 years period are observed in the East Siberian slope region that may be related to local freshwater decrease observed by other studies. Our regional polar sea level products are limited by current understanding of the sea-ice leads measurements and homogenization of these polar products with global sea level products needs to be tackled.
Keywords: satellite altimetry, Arctic Ocean, Southern Ocean, sea level change, Arctic Oscillation
Received: 17 Apr 2024; Accepted: 29 Aug 2024.
Copyright: © 2024 Veillard, Prandi, Pujol, Daguzé, Piras, Dibarboure and Faugère. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Pierre Veillard, Collecte Localisation Satellites (CLS), Toulouse, France
Marie Isabelle Pujol, Collecte Localisation Satellites (CLS), Toulouse, France
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.