Impact of Tropical Disturbance on the Indian Summer Monsoon Onset Simulated by a Global Cloud-System-Resolving Model

DOI Web Site 被引用文献1件 参考文献22件 オープンアクセス
  • Kajikawa Yoshiyuki
    RIKEN Advanced Institute for Computational Science
  • Yamaura Tsuyoshi
    RIKEN Advanced Institute for Computational Science
  • Tomita Hirofumi
    RIKEN Advanced Institute for Computational Science Japan Agency for Marine-Earth Science and Technology
  • Satoh Masaki
    Japan Agency for Marine-Earth Science and Technology Atmosphere and Ocean Research Institute, The University of Tokyo

書誌事項

公開日
2015
DOI
  • 10.2151/sola.2015-020
公開者
公益社団法人 日本気象学会

説明

The onset of the Indian summer monsoon (ISM) in 2012 was investigated using the nonhydrostatic icosahedral atmospheric model (NICAM), a global cloud-system resolving model. We focused on the effect of tropical disturbances on ISM onset and considered the potential extension of onset predictability. A series of NICAM experiments was performed under various initial conditions for the period 10 May to 10 June, 2012. NICAM showed promising performance by realistically simulating ISM onset based on the initial conditions two weeks before the onset. ISM onset in both observations and simulations was accompanied by northward-migrating tropical disturbances over the Bay of Bengal and the Arabian Sea. These disturbances were generated by the eastward propagating disturbance along the equatorial Indian Ocean. As indicated by a comparison of NICAM experimental results with those obtained by the Japan Meteorological Agency Operational Ensemble Prediction System, we suggest that the better reproducing the tropical disturbance enhances the potential to extend the predictability of the transition phase in the Asian summer monsoon.

収録刊行物

  • SOLA

    SOLA 11 (0), 80-84, 2015

    公益社団法人 日本気象学会

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