大气科学进展(英文版)
大氣科學進展(英文版)
대기과학진전(영문판)
ADVANCES IN ATMOSPHERIC SCIENCES
2010年
2期
393-402
,共10页
冯琳%吴德星%林霄沛%孟祥凤
馮琳%吳德星%林霄沛%孟祥鳳
풍림%오덕성%림소패%맹상봉
北太平洋%海气耦合%长期变化%影响区%热带太平洋%年代际振荡%海洋大气%热带地区
北太平洋%海氣耦閤%長期變化%影響區%熱帶太平洋%年代際振盪%海洋大氣%熱帶地區
북태평양%해기우합%장기변화%영향구%열대태평양%년대제진탕%해양대기%열대지구
Pacific Ocean%ocean-atmosphere coupling%long-term variability%PDO
A fully coupled ocean-atmosphere model is applied to highlight the mechanism of the long-term variability (including decadal and longer time scales) in the Pacific Ocean. We are interested in the effect of ocean-atmosphere coupling of different regions during these processes. The control run successfully simulates the Pacific long-term variability, whose leading modes are the Pacific (inter) Decadal Oscillation (PDO) and the North Pacific mode (NPM). Furthermore, three numerical experiments are conducted, shutting down the ocean-atmosphere coupling in the North Pacific, the tropical Pacific, and the South Pacific, respectively. The results show that regional ocean-atmosphere coupling is not only important to the strength of local long-term SST variability but also has an influence on the variability further afield. In both the tropical Pacific and North Pacific, this local effect is the main control, which is much more obvious in the tropical regions. The existence of the PDO is extremely dependent on the coupling in the tropical Pacific. However, extratropical coupling, in particular that in the North Pacific, is also important to form its spatial pattern and strengthen the variability in some tropical areas. For the NPM, its existence is primarily determined by the coupling in the North Pacific.