LES-study on the energy imbalance problem for heterogeneous surfaces
Responsible: Atsushi Inagaki
Project type: Academic Frontiers Student Exchange Promotion Program In 2003-2004 (​MEXT, Japan)
Duration: 01/05/2003 - 31/03/2004

This is a joint project with Siegfried Raasch and Manabu Kanda at the ​Department of International Development Engineering, Tokyo Institute of Technology, Japan. It includes an 11-month research stay in Germany.

This study examines the energy imbalance problem using Large Eddy Simulation model. We represent typical a day-time convective boundary layer with no synoptic-scale vertical motion. By means of this, Kanda et al. (2002)? have already revealed the basic characteristics of energy imbalance aroused by a horizontally homogeneous surface. Based on this result, this study investigates the case of heterogeneous surface condition. The heterogenity is given as 1-dimensional sinusoidal surface heating as in Letzel & Raasch (2002)?. In this study, the influence of the complexity or magnitude of heteroginity heating are important and we examine it in detail. (See also the study by Kanda & Letzel.)