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A STUDY OFTHE INTERACTION BETWEEN THEASIAN SUMMER MONSOONAND EL NINO-SOUTHERN OSCILLATION

A STUDY OFTHE INTERACTION BETWEEN THEASIAN SUMMER MONSOONAND EL NINO-SOUTHERN OSCILLATION
亚洲夏季风与厄尔尼诺-南方涛动相互作用的研究
批准号:
11640430
负责人:
KAWAMURA Ryuichi
金额:
$2.18万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
1999
资助国家:
日本
项目状态:
已结题
起止时间:
1999 至 2001
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中文摘要
翻译
利用海洋环流模式(OGCM)和NCEP/NCAR再分析,得到了厄尔尼诺-南方涛动(ENSO)对南亚夏季风年际变化的两个主要影响,即ES和EA影响。在20世纪60年代至70年代中期,ES的影响主要是由印度洋和太平洋的类似于tbo的ENSO主导的。在热带印度洋上空可以看到与ENSO增长有关的异常Walker环流的东移。与此相关的是夏末印度洋东西部海温纬向不对称异常的突出。从夏季到秋季,印度洋上空的赤道低空双异常环流被诱发,其北部对流层与印度上空的异常季风降雨动态相关,尤其是在夏末。如果类tbo ENSO模式具有精确的两年周期,则夏季风季总是与ENSO的生长期相对应,这意味着季风总是受到ES影响。相比之下,EA的影响需要持续的ENSO,而这种ENSO不会在北方春季结束,因为从前一个冬季到春末,菲律宾附近持续的异常对流加热触发了印度洋的西风反馈机制。由于长时间冷暖事件的频繁发生,20世纪70年代后期以后,EA对ENSO衰减期的影响变得显著。20世纪70年代末之前,类tbo ENSO生长期的ES影响导致了强烈的ENSO-季风耦合,而20世纪70年代末之后ENSO长期化的发生则导致了ENSO衰减期EA对季风的影响,且在季风季前期显著。与ES的影响相比,EA的影响是间接的,直到夏末才会持续。此外,20世纪70年代末以后的季风倾向于同时经历ENSO的ES和EA影响,尽管ES影响变得不那么明显。我们得出结论,这些特征导致了enso -季风关系在20世纪70年代末之后的减弱。少
英文摘要
Using an ocean general circulation model (OGCM) and NCEP/NCAR reanalysis, we obtained two major impacts (i.e., ES and EA impacts) of El Nino-Southern Oscillation (ENSO) on the South Asian summer monsoon interannual variability. The ES impact, which is dominated by TBO-like ENSO in the Indian Ocean and the Pacific Ocean, tends to prevail during the period from the 1960s to mid-1970s. Eastward migration of anomalous Walker circulation relevant to the growth of ENSO can be seen over the tropical Indian Ocean. Associated with this is the prominence of zonally asymmetric SST anomalies between the western and eastern parts of the Indian Ocean in late summer. Low-level twins anomalous circulation across the equator is induced over the Indian Ocean from summer to fall and its northern counterpart is dynamically linked with anomalous monsoon rainfall over India especially in late summer. If the TBO-like ENSO regime has a precise biennial periodicity, the summer monsoon season always corresponds … More to the growth phase of ENSO, which means that the monsoon is always affected by the ES impact.By contrast, the EA impact requires the prolonged ENSO that does not terminate in boreal spring because persistent anomalous convective heating in the vicinity of the Philippines from the preceding winter to late spring triggers a WES feedback regime in the Indian Ocean. Due to the frequent occurrence of the prolonged warm and cold events, the EA impact at the decay phase of ENSO becomes significant after the late 1970s. The ES impact at the growth phase of TBO-like ENSO brings about the strong ENSO-monsoon coupling prior to the late 1970s, while the occurrence of the prolonged ENSO after the late 1970s induces the EA impact on the monsoon at the decay phase of ENSO that is significant at the early stage of the monsoon season. Compared to the ES impact, the EA impact is indirect and not persistent until late summer. Furthermore, the monsoon after the late 1970s tends to experience both the ES and EA impacts of ENSO although the ES impact becomes less clear. We conclude that these features lead to the decline of the ENSO-monsoon relationship after the late 1970s. Less
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会议论文
Kwamura, R.: "A mechanism of the onset of the Australian summer monsoon."Journal of the Geophysical Research. (印刷中). (2002)
Kwamura, R.:“澳大利亚夏季季风爆发的机制。”地球物理研究杂志(2002 年出版)。
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米谷恒春: "気候変動と水災害"信山社出版(印刷中). (2002)
米谷常春:《气候变化与水灾》新山社出版社(出版中)(2002 年)。
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Kawamura, R.: "The Asian summer monsoon and ENSO coupling toward understanding of atmosphere -ocean interaction in the Indian Ocean"Tenki. 47. 169-181 (2000)
Kawamura, R.:“亚洲夏季风和 ENSO 的耦合有助于理解印度洋的大气-海洋相互作用”Tenki。
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川村隆一: "ENSOの数十年スケール変調と西太平洋・インド洋域の大気海洋相互作用"月刊海洋. 号外24. 168-174 (2001)
Ryuichi Kawamura:“西太平洋和印度洋地区 ENSO 和大气-海洋相互作用的十年尺度调制”月刊 Extra 24. 168-174 (2001)。
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18
    Studies on redictability of natural hazards induced by powerful typhoons and explosive cyclones
    • 批准号:
      16H01846
    • 项目类别:
      Grant-in-Aid for Scientific Research (A)
    • 资助金额:
      $25.79万
    • 财政年份:
      2016
    • 负责人:
      KAWAMURA Ryuichi
    • 依托单位:
    A positive feedback process between tropical cyclone and moisture conveyor belt
    • 批准号:
      15K13569
    • 项目类别:
      Grant-in-Aid for Challenging Exploratory Research
    • 资助金额:
      $2.41万
    • 财政年份:
      2015
    • 负责人:
      KAWAMURA Ryuichi
    • 依托单位:
    Studies of reduction in natural disasters induced by explosive cyclones
    • 批准号:
      25242038
    • 项目类别:
      Grant-in-Aid for Scientific Research (A)
    • 资助金额:
      $23.63万
    • 财政年份:
      2013
    • 负责人:
      KAWAMURA Ryuichi
    • 依托单位:
    Studies on explosively developing cyclone activity around Japan andthe associated natural disasters
    国内基金
    海外基金
    物理机理与多模态数据协同驱动的ENSO智能预测方法研究
    • 批准号:
      2026JJ70108
    • 项目类别:
      省市级项目
    • 资助金额:
      --
    • 批准年份:
      2026
    • 负责人:
      吴松
    • 依托单位:
    黑潮延伸体中尺度海温异常对ENSO事件形成及其可预报性的影响研究
    热带印度洋调制ENSO对南海上层热盐结 构的影响: 途径和机理
    • 批准号:
    • 项目类别:
      省市级项目
    • 资助金额:
      10.0万元
    • 批准年份:
      2025
    • 负责人:
      肖福安
    • 依托单位:
    春季热带太平洋大气风场对 ENSO 复杂性的影响研究
    • 批准号:
      24ZR1404400
    • 项目类别:
      省市级项目
    • 资助金额:
      --
    • 批准年份:
      2024
    • 负责人:
      方向辉
    • 依托单位: