Japanese

Atmospheric and Hydrospheric Sciences (A)
Session Sub-categoryAtmospheric Sciences, Meteorology & Atmospheric Environment (AS)
Session IDA-AS03
Session Title Large-scale moisture and organized cloud systems
Short Title Moisture and cloud systems
Date & Time Oral
Session		 AM1-AM2 Wed, 29 MAY
On-site
Poster
Coretime		 PM3 Wed, 29 MAY
Main Convener Name Hiroaki Miura
Affiliation The University of Tokyo
Co-Convener 1 Name Daisuke Takasuka
Affiliation Atmosphere and Ocean Research Institute, The University of Tokyo
Co-Convener 2 Name Atsushi Hamada
Affiliation University of Toyama
Co-Convener 3 Name Satoru Yokoi
Affiliation Japan Agency for Marine-Earth Science and Technology
Session Language E
Scope (Session Description) Water vapor plays a significant role in regulating the global atmospheric circulation, especially in the troposphere. The overturning circulation is directly driven by the longwave radiative cooling of water vapor and the latent heating/cooling through microphysical processes to balance it. This global circulation is composed of diverse atmospheric phenomena with various spatial and temporal scales. Developments of some significant turbulent motions such as 3D isotropic turbulence in clouds, stratocumulus and cumulus convection, squall lines and tropical cyclones, and the Madden-Julian oscillation, are essentially associated with moisture anomaly in each scale. Moisture is accumulated relatively slowly in larger horizontal scales, but is consumed relatively quickly in smaller scales. This significant scale gaps between the accumulation and consumption may be one of the causes of the long-lasting difficulty in developing the theory of the moist atmosphere. The aim of this session is to share the recent researches about the relationships between moisture and organized cloud systems in wider spatial and temporal scales to enhance collaborations between modeling, observational, and theoretical approaches in tackling this challenging task. Examples include theoretical studies on the Madden-Julian Oscillation and typhoons, data analysis studies of severe weather systems, studies of cloud statistical properties using satellite observations, studies of cloud organization under the radiative-convective equilibrium condition, and high-resolution simulations using global cloud-resolving models.
Presentation Format Oral and Poster
Collaboration Joint with AGU
Co-sponsoring
Society		 Meteorological Society of Japan