Properties of surface water masses in the Laptev and the East Siberian seas in summer 2018 from in situ and satellite data.

Tarasenko, Anastasiia, Supply, Alexandre, Kusse-Tiuz, Nikita, Ivanov, Vladimir, Makhotin, Mikhail, Tournadre, Jean, Chapron, Bertrand, Boutin, Jacqueline, Kolodziejczyk, Nicolas and Reverdin, Gilles (2021) Properties of surface water masses in the Laptev and the East Siberian seas in summer 2018 from in situ and satellite data. Open Access Ocean Science, 17 (1). pp. 221-247. DOI 10.5194/os-17-221-2021.

[thumbnail of os-17-221-2021.pdf]
os-17-221-2021.pdf - Published Version
Available under License Creative Commons: Attribution 4.0.

Download (21MB) | Preview

Supplementary data:


Variability of surface water masses of the Laptev and the East Siberian seas in August–September 2018 is studied using in situ and satellite data. In situ data were collected during the ARKTIKA-2018 expedition and then complemented with satellite-derived sea surface temperature (SST), salinity (SSS), sea surface height, wind speed, and sea ice concentration. The estimation of SSS fields is challenging in high-latitude regions, and the precision of soil moisture and ocean salinity (SMOS) SSS retrieval is improved by applying a threshold on SSS weekly error. For the first time in this region, the validity of DMI (Danish Meteorological Institute) SST and SMOS SSS products is thoroughly studied using ARKTIKA-2018 expedition continuous thermosalinograph measurements and conductivity–temperature–depth (CTD) casts. They are found to be adequate to describe large surface gradients in this region. Surface gradients and mixing of the river and the sea water in the ice-free and ice-covered areas are described with a special attention to the marginal ice zone at a synoptic scale. We suggest that the freshwater is pushed northward, close to the marginal ice zone (MIZ) and under the sea ice, which is confirmed by the oxygen isotope analysis. The SST-SSS diagram based on satellite estimates shows the possibility of investigating the surface water mass transformation at a synoptic scale and reveals the presence of river water on the shelf of the East Siberian Sea. The Ekman transport is calculated to better understand the pathway of surface water displacement on the shelf and beyond.

Document Type: Article
Keywords: surface water masses, East Siberian Seas
Refereed: Yes
Open Access Journal?: Yes
Publisher: Copernicus Publications (EGU)
Projects: CATS
Date Deposited: 12 Jul 2021 09:47
Last Modified: 07 Jan 2022 09:54

Actions (login required)

View Item View Item