首页|期刊导航|大气和海洋科学快报（英文版）|Interannual variability of boreal summer intraseasonal oscillation over the northwestern Pacific influenced by the Pacific Meridional Mode
大气和海洋科学快报（英文版）2025，Vol.18Issue(1)：6-11,6.DOI:10.1016/j.aosl.2024.100492
Interannual variability of boreal summer intraseasonal oscillation over the northwestern Pacific influenced by the Pacific Meridional Mode
Interannual variability of boreal summer intraseasonal oscillation over the northwestern Pacific influenced by the Pacific Meridional Mode
摘要
Abstract
在北半球夏季,西北太平洋地区的季节内振荡在两个主要区域呈现出显著的年际变率:一个区域是赤道太平洋中西部(5°S-5°N,150°E-150°W),另一区域为副热带西北太平洋(10°-20°N,130°E-175°W).通过偏相关分析,揭示了前者受到厄尔尼诺-南方涛动(ENSO)的影响,而后者与太平洋经向模态(PMM)有关.利用水汽方程诊断,探讨了在PMM暖(冷)年期间,副热带西北太平洋季节内对流活动增强(减弱)的物理过程.结果表明,在PMM暖年,副热带西北太平洋地区的季节平均水汽增加与季节内垂直扰动的增强相互作用,导致了对流层低层水汽垂直输送的增加,进而引发对流不稳定性的增强,促使季节内对流活动增强.这一发现在以PMM海温为驱动的全球环流模式试验中也得到了验证.关键词
北半球夏季季节内振荡/年际变化/太平洋经向模态/水汽诊断Key words
Boreal summer intraseasonal oscillation/Interannual variability/Pacific Meridional Mode/Moisture budget analysis引用本文复制引用
Haoyu Zhou,Pang-Chi Hsu,Lin Chen,Yitian Qian..Interannual variability of boreal summer intraseasonal oscillation over the northwestern Pacific influenced by the Pacific Meridional Mode[J].大气和海洋科学快报（英文版）,2025,18(1):6-11,6.基金项目
This work was supported by the National Natural Science Foundation of China[grant number 42088101]. （）
