کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4674309 | 1634257 | 2006 | 32 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Potential vorticity and eddy potential enstrophy in the North Atlantic Ocean simulated by a global eddy-resolving model Potential vorticity and eddy potential enstrophy in the North Atlantic Ocean simulated by a global eddy-resolving model](/preview/png/4674309.png)
Eight-year daily mean output of a quasi-global eddy-resolving model is examined with a focus on the large-scale dynamical characteristics of the North Atlantic Ocean in a framework of potential vorticity (PV) and its derivatives. The model has reproduced some of the observed features of the mean potential vorticity field well. The three-dimensional structure of the mean potential vorticity supports baroclinic instability in most of the basin. Eddies are found to play important roles in the formation and maintenance of the mean potential vorticity fields. The contribution of relative vorticity to the mean potential vorticity field is found to be negligible for the most part. However, relative vorticity contribution to the source/sink of potential vorticity and eddy potential enstrophy is not negligible. We also find that eddies are not necessarily diffusive even on a basin-scale.
Journal: Dynamics of Atmospheres and Oceans - Volume 41, Issue 1, February 2006, Pages 28–59