中国海洋大学学报（自然科学版）2026，Vol.56Issue(5)：24-31,8.DOI:10.16441/j.cnki.hdxb.20250124
未来热带太平洋类厄尔尼诺型增暖加速的机制分析
Mechanism Analysis of Future El Niño Like Warming Acceleration in Tropical Pacific Ocean
摘要
Abstract
By analyzing the simulation data of coupled model intercomparison project phase 6(CMIP6),it is found that under high-emissions scenario(SSP5-8.5),the"El Niño like"warming of the upper ocean in the eastern Pacific will accelerate in the future.This accelerated warming trend is mainly due to the accelerated weakening of the Walker circulation caused by the accelerated slowing down of the subtropical circulation,which weakens the easterly wind and inhibits the equatorial upwelling,resulting in the accelerated rise of the upper ocean heat content in the eastern Pacific.Although the wind-evaporation-sea surface temperature feedback mechanism is also one of the main driving mechanisms for the formation of the"El Niño like"warming spatial structure,its contribution to the accelerated warming of this spatial structure is relatively small.The results show that the dynamic response of the tropical East Pacific will form a positive feedback acceleration amplification warming effect under the strong emission scenario.关键词
热带东太平洋/沃克环流/海洋热含量/副热带环流圈/类厄尔尼诺Key words
tropical Eastern Pacific Ocean/Walker circulation/ocean heat content/subtropical circu-lation/El Niño like分类
海洋科学引用本文复制引用
牟桂勋,陈显尧..未来热带太平洋类厄尔尼诺型增暖加速的机制分析[J].中国海洋大学学报（自然科学版）,2026,56(5):24-31,8.基金项目
国家自然科学基金项目(42394130)资助 Supported by the National Natural Science Foundation of China(42394130) （42394130）
