Clipper ATL6 Animations in the South Atlantic

Model Description

From IFREMER: CLIPPER uses the primitive equation code OPA8.1 maintained by Gurvan Madec (LODYC-Paris). The ATL6 configuration is the major focus of the CLIPPER project. It has an isotropic Mercator grid with resolution of 1/6 at the equator. The model has four open boundaries at the northern limit of the domain (70N), at 8W in the Gulf of Cadiz, at the Drake passage (68W) and between Africa and Antarctica at 30E. The locally modified grid near the straits of Gibraltar used in the ATL3 configuration was not satisfactory concerning the properties of the Mediterranean outflow, and has been successfully replaced by an open boundary at 8E. A 8 year spin-up has been performed, and the simulation of the WOCE years, from 1979 to 2000 has been carried-out with daily forcing from ECMWF. Simulations with ATL6 are computationally heavy. The memory required is 16.2 Gbytes and the configuration runs on 140 processors on a T3E with a time step of 1080 sec. One year of simulation requires 5000 hours of cpu on this machine. Five day means are stored every five days, and the storage of one year of simulation amounts to 72 Gb.


Zonal Flows

Meridional Sections

[NB: Frames are subsampled model states every 15 days.]

25W (HYDROS 4)

Velocities(fast version)
Velocity anomalies(fast version)
Meridional density gradients(fast version)
Meridional density gradient anomalies(fast version)
Meridional density gradients at 2500m(fast version)

19W (WOCE A15)

Velocities(fast version)
Velocity anomalies(fast version)
Meridional density gradients(fast version)
Meridional density gradient anomalies(fast version)


Zonal Sections

11S (OCEANUS 133, WOCE A08)

Velocities(fast version)
Velocity anomalies(fast version)
Meridional density gradients(fast version)
Meridional density gradient anomalies(fast version)

30S (WOCE A10)

Velocities(fast version)
Velocity anomalies(fast version)
Meridional density gradients(fast version)
Meridional density gradient anomalies(fast version)


Miscellaneous Notes


© 2002 A.M. Thurnherr (e-mail)created: Tue May 28 13:26:26 2002 modified: Fri Apr 11 10:30:43 2003