Analysis of Stratosphere-Troposphere interaction through the stratospheric general circulation

2016 Fiscal Year Final Research Report

• Project/Area Number: 25340010
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Kyushu University
• Principal Investigator: Eguchi Nawo 九州大学, 応用力学研究所, 助教 (50378907)
• Research Collaborator: KODERA Kunihiko ; NASUNO Tomoe
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 成層圏対流圏間力学結合 / 熱帯対流圏界面遷移層 / 成層圏突然昇温 / 積雲対流 / 中間圏

Outline of Final Research Achievements

This study showed that the stratosphere plays an important role on the generation and development of tropical convection through analyzing the observational satellite data and the simulated data of a global non-hydrostatic model (NICAM) that does not use cumulus parameterization during the sudden stratospheric warming event [Eguchi et al., 2015; Kodera et al., 2015 ]. The results showed that the increased stratospheric upwelling associated with Sudden Stratospheric Warming event causes to decrease the stability in the Tropical Transition Layer and then that induces to enhance the convective activity which transport the short-lived species to the lower stratosphere shortly (within a few days) [Eguchi et al., 2016].

Free Research Field

大気科学(特に熱帯対流圏面遷移層での力学過程)