海洋学报（英文版）
海洋學報（英文版）
해양학보（영문판）
ACTA OCEANOLOGICA SINICA
2008年
2期
1-10
,共10页
Argo trajectory data%Atlantic Ocean%biomodality%mid-depth circulation%optimal spectral decomposition
Analysis of Argo float trajectories at 1000 m and temperature at 950 m in the North Atlantic between November 2003 and January 2005 demonstrates the existence of two different circulation modes with fast transition between them. Each mode has a pair of cy-clonic - anticyclonic gyres. The difference is the location of the cyclonic gyre. The cyclonic gyre stretches from southeast to north-west in the first mode and from the southwest to the northeast in the second mode. The observed modes strongly affect the heat and salt transport in the North Atlantic. In particular, the second mode slows down the westward transport of the warm and saline water from the Mediterranean Sea.
