FN Archimer Export Format
PT J
TI The Copernicus Global 1/12° Oceanic and Sea Ice GLORYS12 Reanalysis
BT 
AF Lellouche, Jean-Michel
   Greiner, Eric
   Bourdallé-Badie, Romain
   Garric, Gilles
   Melet, Angélique
   Drévillon, Marie
   Bricaud, Clément
   HAMON, Mathieu
   Le Galloudec, Olivier
   Regnier, Charly
   Candela, Tony
   Testut, Charles-Emmanuel
   Gasparin, Florent
   Ruggiero, Giovanni
   Benkiran, mounir
   Drillet, Yann
   LE TRAON, Pierre-Yves
AS 1:1;2:2;3:1;4:1;5:1;6:1;7:1;8:1;9:1;10:1;11:1;12:1;13:1;14:1;15:1;16:1;17:1,3;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;17:PDG-ODE;
C1 Mercator Ocean International, Ramonville Saint Agne, France
   Collecte Localisation Satellites, Ramonville Saint Agne, France
   Ifremer, Plouzané, France
C2 MERCATOR OCEAN, FRANCE
   CLS, FRANCE
   IFREMER, FRANCE
SI MERCATOR
SE PDG-ODE
IN WOS Ifremer UPR
   DOAJ
   copubli-france
IF 3.661
TC 137
UR https://archimer.ifremer.fr/doc/00706/81775/86483.pdf
   https://archimer.ifremer.fr/doc/00706/81775/86484.gif
   https://archimer.ifremer.fr/doc/00706/81775/86485.tif
LA English
DT Article
DE ;ocean and sea ice reanalysis;data assimilation;high-resolution model;ocean variability;operational oceanography;Copernicus marine service
AB GLORYS12 is a global eddy-resolving physical ocean and sea ice reanalysis at 1/12° horizontal resolution covering the 1993-present altimetry period, designed and implemented in the framework of the Copernicus Marine Environment Monitoring Service (CMEMS). The model component is the NEMO platform driven at the surface by atmospheric conditions from the ECMWF ERA-Interim reanalysis. Ocean observations are assimilated by means of a reduced-order Kalman filter. Along track altimeter sea level anomaly, satellite sea surface temperature and sea ice concentration, as well as in situ temperature and salinity vertical profiles are jointly assimilated. A 3D-VAR scheme provides an additional correction for the slowly-evolving large-scale biases in temperature and salinity. The performance of the reanalysis shows a clear dependency on the timedependent in situ observation system. The general assessment of GLORYS12 highlights a level of performance at the state-of-the-art and the capacity of the system to capture the main expected climatic interannual variability signals for ocean and sea ice, the general circulation and the inter-basins exchanges. In terms of trends, GLORYS12 shows a higher than observed warming trend together with a slightly lower than observed global mean sea level rise. Comparisons made with an experiment carried out on the same platform without assimilation show the benefit of data assimilation in controlling water mass properties and sea ice cover and their low frequency variability. Moreover, GLORYS12 represents particularly well the small-scale variability of surface dynamics and compares well with independent (non-assimilated) data. Comparisons made with a twin experiment carried out at 1/4° resolution allows characterizing and quantifying the strengthened contribution of the 1/12° resolution onto the downscaled dynamics. GLORYS12 provides a reliable physical ocean state for climate variability and supports applications such as seasonal forecasts. In addition, this reanalysis has strong assets to serve regional applications and provide relevant physical conditions for applications such as marine biogeochemistry. In the near future, GLORYS12 will be maintained to be as close as possible to real time and could therefore provide relevant and continuous reference past ocean states for many operational applications. 
PY 2021
PD JUN
SO Frontiers In Earth Science
SN 2296-6463
PU Frontiers Media
VL 9
UT 000680864200001
DI 10.3389/feart.2021.698876
ID 81775
ER

EF