Diurnal cycle and its modulation by Madden-Julian oscillation observed around western coast of Sumatra Island: preconditioning for offshore convection by gravity waves

Satoru Yokoi1, Shuichi Mori2, Masaki Katsumata2, Kazuaki Yasunaga3 and Kunio Yoneyama1, (1)JAMSTEC, Kanagawa, Japan, (2)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, (3)University of Toyama, Faculty of Sustainable Design, Toyama, Japan