A study of relation between gravity waves and mean flow from upper troposphere to lower stratosphere based on intensive radiosonde observations at Bengkulu during YMC-Sumatra 2017 — Australian Meteorological and Oceanographic Society
  1. Schedule
  2. 31(ii). Maritime Continent earth system science and the Years of Maritime Continent
  3. A study of relation between gravity waves and mean flow from upper troposphere to lower stratosphere based on intensive radiosonde observations at Bengkulu during YMC-Sumatra 2017

A study of relation between gravity waves and mean flow from upper troposphere to lower stratosphere based on intensive radiosonde observations at Bengkulu during YMC-Sumatra 2017 (#84)

Takenari Kinoshita 1 , Ryuichi Shirooka 1 , Junko Suzuki 1 , Shin-Ya Ogino 1 , Suginori Iwasaki 2 , Kunio Yoneyama 1 , Urip Haryoko 3 , Dodi Ardiansyah 3 , Diah Alyudin 3
  1. JAMSTEC, Yokosuka, KANAGAWA, Japan
  2. National Defense Academy, Yokosuka, Kanagawa, Japan
  3. Indonesian Agency for Meteorology, Climatology and Geophysics, Jakarta, Indonesia

There are many atmospheric gravity waves generated from local region such as convection and topography around the Maritime Continent including Indonesia, where convective activities are large. It is important to understand their activities because the quasi-biennial oscillation and general circulation in middle atmosphere are affected by their activities. However, the scale of gravity waves is too broad to understand their characters and activities in detail. In these regions, the Campaign of Years of Maritime Continent-Sumatra (YMC-Sumatra) was operated from November 2017 to January 2018 to expedite the progress of improving understanding and prediction of local multi-scale variability of the maritime continent weather-climate system and its global impact. We use intensified radiosonde observation data at Bengkulu during December 2017 and report the analysis results of the relation between gravity wave activities and mean flow from upper troposphere to lower stratosphere. We will discuss the three dimensional structure of gravity waves by using the non-hydrostatic modeling data.

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