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Upper ocean North atlantic circulation

 

 

 

Use in real time of profiler data in an operational forecast system (Feb to may 2003).

                                

Analyzed Sea surface Temperature            48-H forecast of sea surface temperature               

                                 

Analyzed Mixed layer depth                  48-H forecast of the mixed layer depth       

Ocean circulation from real time data inversioN.

                           

 Inversion results - 10m                                          Inversion results - 1500m

DETERMINATION OF CIRCULATION IN NORTH ATLANTIC BY InversioN OF ARGO FLOAT DATA.

The finite difference inverse model developed at LPO - IFREMER ( France) by Mercier et al. (JPO, 1993) was run to estimate the circulation in the Gyroscope area using the ARGO float profiles collected during 2001-2003. For more information, see the poster presented at the ARGO workshop in Japan, Nov. 2003.

After annual inversions for those three years, we try to estimate the seasonal variability thanks to seasonal inversions between winter 2002 and winter 2003. Here are the results of some diagnosis made at 100 meters (video animations) :

Barotropic stream function (warning : 22 Mo)
Meridionial overturning cell (warning : 15 Mo) 
Density field at 100 meters (warning : 18 Mo) 
Velocity field at 100 meters (warning : 18 Mo)

 

 
Update : 10/03/04
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