...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dynamics of Atmospheres and Oceans >Influence of the strongest positive Indian Ocean Dipole and an El Nino Modoki event on the 2019 Indian summer monsoon
【24h】

Influence of the strongest positive Indian Ocean Dipole and an El Nino Modoki event on the 2019 Indian summer monsoon

机译：最强大的印度洋偶极子和El Nino Modoki活动对2019年印度夏季季风的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The year 2019 experienced an excess monsoon season over the Indian region, with the seasonal rainfall being 110 % of the long period average (LPA). Several zones across the country suffered multiple extreme rainfall events and flood situations resulting in a massive loss of life and property. The first half of 2019 experienced a moderate El Nino Modoki event that lasted till midsummer. Another important feature of 2019 was the strongest recorded positive Indian Ocean Dipole (IOD) that lasted approximately seven months from May to November. This study has examined the reasons for the intra-seasonal variability of rainfall over India during the 2019 monsoon using available remote sensing and reanalysis data. Our analysis has shown that the presence of El Nino and the formation of a very severe cyclonic storm (VSCS) in the Arabian Sea were unfavorable for the monsoon onset and its northward advancement during June. However, the Walker circulation associated with El Nino helped strengthen the IOD developed early in the Indian Ocean, much before the monsoon onset. The anomalously strong IOD strengthened the monsoon circulation during July-September and resulted in excess rainfall over India.
机译：2019年在印度地区经历过多余的季风季节，季节性降雨量是长期平均水平的110％（LPA）。全国各地的几个区遭受了多种极端降雨事件和洪水局势，导致了巨大的生命和财产丧失。 2019年上半年经历了一个适度的El Nino Modoki活动，持续到仲夏。 2019年的另一个重要特征是最强大的被录制的积极印度洋偶极子（IOD），从5月到11月持续了大约七个月。本研究检测了在2019年季风在印度使用可用的遥感和重新分析数据时季节性降雨季节性变异性的原因。我们的分析表明，El Nino的存在和在阿拉伯海中形成了非常严重的旋风风暴（VSC）对于季风发病及其在6月期间的北方进步是不利的。然而，与El Nino相关的助行器流通有助于加强在印度洋早期开发的IOD，在季风发作之前。在7月至9月期间，异常强大的IOD加强了季风循环，导致印度的降雨量过多。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号